SOEJIMA Tetsuro

Researcher Information

Degree

• Ph. D. Engineering（2007 Kyushu University）

URL

http://www.apch.kindai.ac.jp/inorg-folder/inorg-index.html

Research funding number

• 40512695

J-Global ID

• 200901058228629924

Research Interests

• Colloid Chemistry   Self-organization   Inorganic synthesis   Catalyst   Photocatalyst   Nanomaterials   

Research Areas

• Nanotechnology/Materials / Inorganic and coordination chemistry
• Nanotechnology/Materials / Inorganic compounds/materials chemistry
• Nanotechnology/Materials / Composite materials and interfaces
• Nanotechnology/Materials / Inorganic materials
• Nanotechnology/Materials / Nanomaterials

Academic & Professional Experience

• 2022/04  Kindai UniversityFaculty of Science and Engineering Department of Applied ChemistryAssociate Professor
• 2014/04 - 2022/03  Kindai UniversityFaculty of Science and Engineering, Department of Applied Chemistry講師
• 2010/04 - 2014/03  Kindai UniversityFaculty of Science and Engineering, Department of Applied Chemistry助教
• 2008/04 - 2010/03  Kyushu UniversityDepartment of Applied ChemistryPostdoctoral Fellow
• 2007/04 - 2008/03  University of California, BerkeleyDepartment of ChemistryPostdoctoral Fellow
• 2006/04 - 2007/03  Japan Society for the Promotion of Science (Kyushu University)Research Fellowship for Young Scientists

Education

•        - 2007  Kyushu University  Graduate School of Engineering  Doctoral course (Prof. Nobuo Kimizuka)
•        - 2004  Kindai University  Graduate School of Science and Engineering Research  Master's course (Prof. Seishiro Ito and Prof. Hiroaki Tada)
•        - 2002  Kindai University  Faculty of Science and Engineering  Department of Applied Chemistry

Association Memberships

• MATERIAL TECHNOLOGY OF JAPAN RESEARCH INSTITUTE   CATALYSIS SOCIETY OF JAPAN   THE SURFACE FINISHING SOCIETY OF JAPAN   JAPAN SOCIETY OF COLOUR MATERIAL   コロイドおよび界面化学部会   日本化学会   

Published Papers

• Formation mechanism of radial mesocrystals consisting of ZnO nanowires

  Yaozong Yan; Hiroaki Tada; Hisashi Sugime; Tetsuro Soejima

  CrystEngComm (outside back cover) Royal Society of Chemistry (RSC) 2023/10 

  Radial semiconductor mesocrystals (rad-SEM MCs), the so-called sea urchin-like microspheres, combining both the properties of nanoparticles and microparticles have widely attracted much interest. Elucidation of the detailed formation mechanism is...
• Selective Self-Assembly of Gold Nanocrystals using Complementary Leucine Zipper Peptides

  Issei Nakao; Kento Sumida; Mizuki Kitamatsu; Tetsuro Soejima

  Chemistry Letters The Chemical Society of Japan 0366-7022 2023/10 [Refereed]
  
• Seed-Assisted Hydrothermal Synthesis of Radial TiO₂ Homomesocrystals and the Application as a Support for Plasmonic Photocatalysts

  Ryota Kojima; Yuga Ogino; Shin-ichi Naya; Tetsuro Soejima; Hiroaki Tada

  Crystal Growth & Design American Chemical Society (ACS) 23 (6) 4472 - 4479 1528-7483 2023/05 [Refereed]
  
• Facile synthesis of single-crystalline MnO2 nanowire arrays with high photothermal catalytic activity

  Tetsuro Soejima; Haruki Inoue; Keigo Egashira; Yaozong Yan; Hiroaki Tada

  Chemical Communications (inside front cover) Royal Society of Chemistry (RSC) 59 1449 - 1452 1359-7345 2023/02 [Refereed]
   

  Facile synthesis of single-crystalline MnO2 nanowire arrays with high photothermal catalytic activity Tetsuro Soejima,a,b* Haruki Inoue,b Keigo Egashira,b and Hiroaki Tadaa,b* A simple process has been developed to form single-crystalline...
• A biomimetic all-inorganic photocatalyst for the artificial photosynthesis of hydrogen peroxide

  Miwako Teranishi; Shin-ichi Naya; Yaozong Yan; Tetsuro Soejima; Hisayoshi Kobayashi; Hiroaki Tada

  Catalysis Science & Technology (front cover) Royal Society of Chemistry (RSC) 12 (20) 6062 - 6068 2044-4753 2022/10 [Refereed]
   

  The artificial photosynthesis of H2O2 from water and O2 presents a sustainable route for the production. Remarkable progress in the rate of reaction has recently been achieved mainly by using...
• Anisotropic growth of gold nanocrystals induced by concerted adsorption using a photochemical approach

  Tatsu Ohashi; Taiki Matsuba; Tetsuro Soejima

  Nano-Structures & Nano-Objects Elsevier BV 29 100845 - 100845 2352-507X 2022/02 [Refereed]
  
• Removal of Low Concentration Cs(I) from Water using Prussian Blue

  Ei Ohara; Seishiro Ito; Tetsuro Soejima

  Inorganica Chimica Acta 514 120029  2021/01 [Refereed]
  
• Symmetry Breaking Induced by Growth Kinetics: One-Pot Synthesis of Janus Au–AgBr Nanoparticles

  Reki Takahashi; Musashi Fujishima; Hiroaki Tada; Tetsuro Soejima

  ChemNanoMat (front cover) 6 (10) 1485 - 1495 2020/09 [Refereed]
  
• Low-temperature One-pot Aqueous Synthesis and Application of Anatase/rutile TiO2 Composite Nanoparticles

  Naoki Kitamura and Tetsuro Soejima

  Chemistry Letters 49 (5) 521 - 525 2020/05 [Refereed]
  
• TiO₂ Nanocoral Structures as Versatile Substrates for Surface‐Assisted Laser Desorption/Ionization Mass Spectrometry

  Yoshihiro Nakamura; Tetsuro Soejima

  ChemNanoMat (VIP, front cover) 5 (4) 447 - 455 2019/04 [Refereed]
  
• Monodisperse manganese oxide nanoparticles: Synthesis, characterization, and chemical reactivity

  Tetsuro Soejima; Kazuki Nishizawa; Ryosuke Isoda

  Journal of Colloid and Interface Science ACADEMIC PRESS INC ELSEVIER SCIENCE 510 (15) 272 - 279 0021-9797 2018/01 [Refereed]
   

  Highly monodisperse amorphous manganese oxide (MnOx) nanospheres with diameter of ca. 300nm have been obtained from ammonia aqueous solution of KMnO4 at room temperature. The amorphous MnOx nanospheres successfully converted to monodisperse K-OMS-2 (cryptomelane) and K-OMS-2/Mn2O3 nanoraspberries through calcination process at 600 and 800C, respectively. Analyzing the structure of such amorphous MnOx has been a challenge because fewer reports are available to examine amorphous structure. Thus, shape, crystallinity, and structure of the amorphous and crystalline MnOx nanostructures were characterized in detail by X-ray diffraction (XRD), thermogravimetry/differential thermal analysis (TG/DTA), scanning electron microscopy (SEM), transmission electron microscopy (TEM), high-resolution TEM (HRTEM), Fourier transform infrared spectroscopy (FTIR), Raman spectroscopy, X-ray Photoelectron Spectroscopy (XPS), and energy dispersive spectroscopy (EDS). We discussed a plausible formation mechanism of amorphous MnOx nanospheres based on the investigations. The obtained MnOx nanostructures have been demonstrated to possess oxidative degradation ability of Rhodamine B (RhB) under acidic aqueous condition without any additives such as chemical oxidizing agents and UV and/or visible light irradiation. RhB degradation rate of amorphous MnOx nanospheres was about one hundred times faster than that of K-OMS-2 nanoraspberries. (c) 2017 Elsevier Inc. All rights reserved.
• Facile vapor-phase synthesis of copper nanostructures on cuprous iodide films

  Yasuhiro Seguchi; Tetsuro Soejima

  Vacuum PERGAMON-ELSEVIER SCIENCE LTD 144 53 - 62 0042-207X 2017/10 [Refereed]
   

  One-dimensional growth of copper (Cu) is observed when Cu is deposited on cuprous iodide (CuI) films at elevated temperatures by thermal evaporation in high vacuum. The morphology, crystallinity, and chemical composition were examined for the samples using scanning electron microscopy, transmission electron microscopy, X-ray diffraction, energy-dispersive X-ray spectroscopy, and X-ray photoelectron spectroscopy. Straight single-crystalline Cu nanowires can be formed on polycrystalline CuI films at 200 degrees C. Anisotropic growth of Cu in one-dimension was promoted by enhancing grain growth and continuity of CuI films. At a lower temperature of 100 degrees C, fuzzy branching nanowires were grown on the surface of CuI films, enabling to simply fabricate a self-supporting, highly porous film of Cu. It is revealed that a Cul film serves as a functional substrate to synthesize nanostructured Cu at low temperatures. Possible growth processes are proposed to explain the observed morphology evolution of Cu with respect to synthesis conditions. The characterization of water wettability showed that the hydrophobicity was remarkably enhanced due to the formation of nanostructured Cu on the CuI films. (c) 2017 Elsevier Ltd. All rights reserved.
• Solid-Phase Photochemical Growth of Composition-Variable Au-Ag Alloy Nanoparticles in AgBr Crystal

  Shin-ichi Naya; Yoshihiro Hayashido; Ryo Akashi; Kaoru Kitazono; Tetsuro Soejima; Musashi Fujishima; Hisayoshi Kobayashi; Hiroaki Tada

  Journal of Physical Chemistry C AMER CHEMICAL SOC 121 (38) 20763 - 20768 1932-7447 2017/09 [Refereed]
   

  Silver-silver halides (Ag-AgX, X = Cl, Br, I) have emerged as a new type of visible-light photocatalyst for solar-to-chemical transformations. The key to improving the activity of the plasmonic photocatalyts is the compatibility of local electric field enhancement (LEFE) and effective utilization of the sunlight as the energy source. A Ag nanoparticle (NP) possesses an intense LEFE effect, while the absorption peak is situated near the blue edge of the visible region. On the other hand, the Au NP has an absorption matching well the solar spectrum, but the LEFE is much smaller than that of a Ag NP. The optical property of a Au-x-Ag1-x alloy NP varies between those of Ag and Au NPs depending on the composition x, and thus, Au-x-Ag1-x alloy NP-incorporated AgX (Au-x-Ag1-x@AgX) can be a promising plasmonic photocatalyst. At the first step, gold ion-doped AgBr NPs are formed on mesoporous TiO2 film by the successive ionic layer adsorption and reaction (SILAR) method. At the second step, UV-light irradiation (lambda > 320 nm) of the sample in methanol yields Au-x-Ag1-x alloy particles having diameter of similar to 5 nm in the interior of AgBr with crystallite size of similar to 50 nm. The peak wavelength for the localized surface plasmon resonance can be tuned in the range between 500 and 600 nm through the alloy composition. On the basis of the experimental and density functional theory calculation results, we propose a plausible reaction mechanism.
• Growth of gold nanostructures on a Si wafer by concerted mechanisms of photoreduction and galvanic displacement

  T. Soejima; Y. Katayama; S. Fujii

  CrystEngComm ROYAL SOC CHEMISTRY 18 (35) 6683 - 6688 1466-8033 2016 [Refereed]
   

  The development of a facile growth method of gold nanocrystals with a controlled shape is of crucial importance to expand the potential applications of gold nanoarchitectures which have various unique and useful physicochemical properties. Here, we report the site-preferential formation of gold nanostructures with various shapes on Si substrates. When a Si wafer covered with cetyltrimethylammonium bromide (CTAB, an organic salt) is immersed in Au center dot OH)(4)(-) aqueous solution and immediately photoirradiated, dendritic gold nanostructures grow on the surface of the Si wafer. Interestingly, the gold nanodendrites preferentially grow on scratched portions drawn by using a pen-type diamond glass cutter on the Si wafer. The shape of gold nanocrystals depends on the structure of both quaternary alkylammonium cations and halide anions, which are components of the organic salt film, and gold nanostructures with various shapes are successfully obtained at the scratched portions. It is revealed that concerted mechanisms of photoreduction of Au3+ ions and a new type of galvanic displacement reaction between Si and Au(OH)(4)(-) cause the site-preferential growth of gold nanoarchitectures.
• Formation of Green Colored Structures on Copper Plate in Low-temperature Aqueous Reaction System

  SOEJIMA, Tetsuro; MAEDO, Takeshi; ITO, Seishiro

  Material Technology 材料技術研究協会 34 (1) 5 - 10 0289-7709 2016/01 [Refereed]
  
• Light-Reducible Dissipative Nanostructures Formed at the Solid-Liquid Interface

  Tetsuro Soejima; Yuta Amako; Seishiro Ito; Nobuo Kimizuka

  Langmuir AMER CHEMICAL SOC 30 (47) 14219 - 14225 0743-7463 2014/12 [Refereed]
   

  Dissipative structures are macroscopic or even larger ordered structures that emerge under conditions far from thermodynamic equilibrium. In contrast, molecular self-assembly has been investigated near at the thermodynamic equilibrium, which provides basically smaller, nano-to-micron sized structures. In terms of the formation principles, there exists an essential gap between the dissipative structures and molecular self-assemblies. To fill this gap, molecular self-assembly of light-reducible organic-inorganic ion pairs was investigated under far-from-equilibrium conditions. When solid films of tetraalkylammonium hexafluorophosphate were immersed in aqueous Au(OH)4(-) and immediately photoirradiated, gold nanowires are formed at the solid-aqueous interface. On the other hand, such nanowires were not formed when the photoirradiation was conducted for the specimens after a prolonged immersion period of 60 min. These observations indicate spontaneous growth of dissipative nanofibrous self-assemblies consisting of light-reducible ion pairs [tetraalkylammonium ion][Au(OH)4(-) at the interface and their photoreduction to give developed nanowires. These nanowires are not available by the photoreduction of Au(OH)4(-) ions under conditions near at the thermodynamic equilibrium. A picture for the dissipative nanostructures is obtained: the formation of amphiphilic light-reducible nanowire structures is based on the static self-assembly near at the thermodynamic equilibrium, whereas their spontaneous, anisotropic growth from the interface to the aqueous phase is directed by dynamic, dissipative self-assembly phenomena under the far-from-equilibrium conditions. Thus, the both elements of dissipative self-assembly (dynamic) and static molecular self-assembly fuse together at the nanoscale, which is an essential feature of the dissipative nanostructures.
• A Facile and One-step Blue Coloring Method of Copper Substrate

  SOEJIMA, Tetsuro; MAEDO, Takeshi; ITO, Seishiro

  Material Technology 材料技術研究協会 32 (2) 46 - 51 0289-7709 2014/03 [Refereed]
  
• Facile Low-Temperature Synthesis and Photocatalytic Activity of Graphene Oxide/TiO2 Composite

  Tetsuro Soejima; Yosuke Maru; Seishiro Ito

  BULLETIN OF THE CHEMICAL SOCIETY OF JAPAN CHEMICAL SOC JAPAN 86 (9) 1065 - 1070 0009-2673 2013/09 [Refereed]
   

  Graphene (oxide)/TiO2 composite materials have attracted widespread attention because of their scientific and technological importance as, for example, photocatalysts or electronic materials. These composites are usually prepared using high-temperature and/or slow synthetic procedures such as the hydrothermal method. Here, we demonstrate a low-temperature and relatively rapid synthesis of a graphene oxide/TiO2 composite. Graphene oxide sheets decorated with anatase TiO2 nanoparticles are successfully obtained by refluxing graphene oxide sheets dispersed in an aqueous TiOSO4 ethanol solution at 80 degrees C for 2 h. The graphene oxide is reduced during photocatalytic reduction of the TiO2 deposited on the surface of the graphene oxide. The reduced graphene mdde/TiO2 composite shows very high photocatalytic activity as compared with pure TiO2 and nonreduced graphene oxide/TiO2.
• Alkaline vapor oxidation synthesis and electrocatalytic activity toward glucose oxidation of CuO/ZnO composite nanoarrays

  Tetsuro Soejima; Kohei Takada; Seishiro Ito

  APPLIED SURFACE SCIENCE ELSEVIER SCIENCE BV 277 (15) 192 - 200 0169-4332 2013/07 [Refereed]
   

  CuO/ZnO nanocomposite materials have attracted widespread attention because of their scientific and technological importance as, for example, photocatalysts, gas and humidity sensors, catalysts for H-2 production and organic synthesis, and solar cells. High-temperature and/or complicated multistep processes are usually used to prepare these composites. Here we demonstrate a low-temperature and facile one-step synthesis of CuO nanoflowers/ZnO nanorods composite arrays via an alkaline vapor oxidation process. The CuO/ZnO composite nanoarrays show high electrocatalytic activity toward glucose oxidation. (c) 2013 Elsevier B.V. All rights reserved.
• Synthesis of TiO2 Nanocoral Structures in Ever-Changing Aqueous Reaction Systems

  Tetsuro Soejima; Ren-Hua Jin; Yuki Terayama; Atsushi Takahara; Takamasa Shiraishi; Seishiro Ito; Nobuo Kimizuka

  LANGMUIR AMER CHEMICAL SOC 28 (5) 2637 - 2642 0743-7463 2012/02 [Refereed]
   

  A far-from-equilibrium strategy is developed to synthesize coral-like nanostructures of TiO2 on a variety of surfaces. TiO2 nanocoral structures consist of anatase base film and rutile nanowire layers, and they are continuously formed on substrates immersed in aqueous TiOSO4-H2O2. The sequential deposition of TiO2 starts with hydrolysis and condensation reactions of titanium peroxocomplexes in the aqueous phase, resulting in deposition of amorphous film. The film serves as adhesive interface on which succeeding growth of rutile nanowires to occur. This initial deposition reaction is accompanied by shift in pH of the reaction media, which is favorable condition for the growth of rutile nanocrystals. During the growth of rutile nanocoral layers, the amorphous base films are transformed to anatase phase. These sequential deposition reactions occur at temperatures as low as 80 degrees C, and the mild synthetic condition allows the use of a wide range of substrates such as ITO (indium tin oxide), glass, and even organic polymer films. The thickness of nanocoral layer is controllable by repeating the growth reaction of rutile nanocorals. TiO2 nanocorals show photocatalytic activity as demonstrated by site-specific reduction of Ag(I) ions, which proceeds preferentially on the rutile nanowire layer. The rutile nanowire layer also shows photocatalytic decomposition of acetaldehyde, which is promoted upon increase of the thickness of the nanowire layer. The use of temporally transforming reaction media allows the formation of biphasic TiO2 nanocoral structures, and the concept of nonequilibrium synthetic approach would be widely applicable to developing structurally graded inorganic nanointerfaces.
• Characterization of Electrolytic colored Al Film with Fe

  HASEGAWA, Taichi; MAEKAWA, Yuki; SOEJIMA, Tetsuro; ITO, Seishiro

  Material Technology 30 (1) 17 - 22 2012/01 [Refereed]
  
• Dense aqueous colloidal gold nanoparticles prepared from highly concentrated precursor solution

  Tetsuro Soejima; Seisaku Oshiro; Yasuji Nakatsuji; Seishiro Ito

  JOURNAL OF COLLOID AND INTERFACE SCIENCE ACADEMIC PRESS INC ELSEVIER SCIENCE 362 (2) 325 - 329 0021-9797 2011/10 [Refereed]
   

  Gold nanoparticles were fabricated by reduction of highly concentrated Au(III) ions (200 mM) with casein proteins from milk. The gold nanoparticles were converted to nanoparticle-powders after washing and subsequent vacuum drying without aggregation. The nanoparticle-powders completely re-dispersed in aqueous solution, and stable colloidal gold nanoparticles were obtained. UV-vis extinction spectra and dynamic light scattering (DLS) measurements revealed that large assemblies (size, ca. 3 mu m) and subaggregates (size, <0.51 mu m) composed of gold nanoparticle-casein protein chain-Au(III) ion were dynamically formed and disintegrated over the course of the growth of the gold nanoparticles. Fourier transform infrared (FT-IR) spectra indicated conformational changes of casein proteins induced by the interaction of casein protein-Au(III) ion and -gold nanoparticle. Finally, rapid, one-pot, and highly concentrated synthetic procedures of gold and silver nanoparticle powders protected by casein (mean diameters below 10 nm) were successfully developed using 3-amino-1-propanol aqueous solutions as reaction media. Dense colloidal gold (40 g L-1) and silver (22 g L-1) nanoparticle aqueous solutions were obtained by re-dispersing the metal nanoparticle powders. (C) 2011 Elsevier Inc. All rights reserved.
• One-pot synthesis and photocatalytic activity of Fe-doped TiO2 films with anatase-rutile nanojunction prepared by plasma electrolytic oxidation

  Tetsuro Soejima; Hitomi Yagyu; Seishiro Ito

  JOURNAL OF MATERIALS SCIENCE SPRINGER 46 (16) 5378 - 5384 0022-2461 2011/08 [Refereed]
   

  A novel one-pot low temperature preparation of Fe-doped anatase-rutile TiO2 (Fe-TiO2) films is demonstrated using plasma electrolytic oxidation (PEO). Pale yellow TiO2 films are obtained by PEO treatment of Ti metals in the electrolyte dispersing TiO2 and Fe2O3 particles. The oxidized layer on Ti metal have a sponge-like structure with thickness and pore size of 10 and 0.1-1 mu m, respectively. Investigation by X-ray diffraction, X-ray photoelectron spectroscopy, and UV-Vis absorption spectroscopy all indicate that dissolved Fe3+ ions in the strong acidic electrolyte are doped into the TiO2 structure during PEO. The photocatalytic activity of Fe-TiO2 samples was investigated by studying the photocatalytic decomposition of acetaldehyde. Fe-TiO2 samples doped with optimum Fe content show visible light photocatalytic activity and further increased photocatalytic activity under UV illumination compared with that of pure TiO2 films.
• Iron Electrolytic Coloring of Anodic Aluminum Oxide in FeSO₄-Citric Acid-Ascorbic Acid Bath

  HASEGAWA, Taichi; SOEJIMA, Tetsuro; MIYOSHI, Motoki; ITO, Seishiro

  Material Technology 材料技術研究協会 29 (4) 149 - 154 0289-7709 2011/07 [Refereed]
  
• Nanocrystal bilayer for tandem catalysis

  Yusuke Yamada; Chia-Kuang Tsung; Wenyu Huang; Ziyang Huo; Susan E. Habas; Tetsuro Soejima; Cesar E. Aliaga; Gabor A. Somorjai; Peidong Yang

  NATURE CHEMISTRY NATURE PUBLISHING GROUP 3 (5) 372 - 376 1755-4330 2011/05 [Refereed]
   

  Supported catalysts are widely used in industry and can be optimized by tuning the composition and interface of the metal nanoparticles and oxide supports. Rational design of metal-metal oxide interfaces in nanostructured catalysts is critical to achieve better reaction activities and selectivities. We introduce here a new class of nanocrystal tandem catalysts that have multiple metal-metal oxide interfaces for the catalysis of sequential reactions. We utilized a nanocrystal bilayer structure formed by assembling platinum and cerium oxide nanocube monolayers of less than 10 nm on a silica substrate. The two distinct metal-metal oxide interfaces, CeO(2)-Pt and Pt-SiO(2), can be used to catalyse two distinct sequential reactions. The CeO(2)-Pt interface catalysed methanol decomposition to produce CO and H(2), which were subsequently used for ethylene hydroformylation catalysed by the nearby Pt-SiO(2) interface. Consequently, propanal was produced selectively from methanol and ethylene on the nanocrystal bilayer tandem catalyst. This new concept of nanocrystal tandem catalysis represents a powerful approach towards designing high-performance, multifunctional nanostructured catalysts.
• Electrolytic Coloring with Fe of Anodized Al

  HASEGAWA, Taichi; KITAGAWA, Tatsuya; MIYOSHI, Motoki; SOEJIMA, Tetsuro; ITO, Seishiro

  Material Technology 材料技術研究協会 29 (3) 105 - 109 0289-7709 2011/05 [Refereed]
  
• Additive Effect of Malonic acid on Electrolytic Coloring of Anodezed Al

  HASEGAWA, Taichi; MAEKAWA, Yuki; SOEJIMA, Tetsuro; ITO, Seishiro

  Material Technology 材料技術研究協会 29 (2) 73 - 78 0289-7709 2011/03 [Refereed]
  
• Fixing of CdS into the Oxide Films Formed by Alternating Current Anodizing on Al in H₂SO₄ Bath and Its Photocatalytic Activity

  HASEGAWA, Taichi; MATSUDA, Shuhei; SOEJIMA, Tetsuro; ITO, Seishiro

  Material Technology 材料技術研究協会 29 (1) 16 - 23 0289-7709 2011/01 [Refereed]
  
• One-pot alkaline vapor oxidation synthesis and electrocatalytic activity towards glucose oxidation of CuO nanobelt arrays

  Tetsuro Soejima; Hitomi Yagyu; Nobuo Kimizuka; Seishiro Ito

  RSC ADVANCES ROYAL SOC CHEMISTRY 1 (2) 187 - 190 2046-2069 2011 [Refereed]
   

  CuO nanobelt arrays supported on copper substrates are synthesized by a simple and one-pot low-temperature vapor oxidation method. The CuO nanobelt arrays show high electrocatalytic activity towards glucose oxidation.
• One-Pot Room-Temperature Synthesis of Single-Crystalline Gold Nanocorolla in Water

  Tetsuro Soejima; Nobuo Kimizuka

  JOURNAL OF THE AMERICAN CHEMICAL SOCIETY AMER CHEMICAL SOC 131 (40) 14407 - 14412 0002-7863 2009/10 [Refereed]
   

  A room-temperature nanocarving strategy is developed for the fabrication of complex gold nanoplates having corolla- and propeller-like architectures. It is based on the simultaneous growth and etching of gold nanoplates in aqueous solution, which occur in the course of photoreduction of Au(OH)(4)(-) ions. The presence of bromide ion, poly(vinylpyrrolidone) (PVP), and molecular oxygen is indispensable, where bromide ions play multiple roles. First, they promote formation of nanoplate structures by forming adlayers on the fcc(111) surface. Second, they facilitate oxidative dissolution of gold nanocrystals by converting the oxidized Au(I) species to soluble AuBr(2)(-) ions, which lead to the formation of ultrathin nanocrevasses. PVP also stabilizes the nucleation of gold nanoplates. Although the overall reactions proceed in one-pot, the crystal growth and etching show interplay and occur with different kinetics due to changes in the concentration of Au(OH)4- and other species with time. Corolla- or propeller-like gold nanoplates formed under these conditions are single-crystalline, as indicated by selected area electron diffraction patterns and the observation of moire fringes. The morphology of corolla- or propeller-like gold nanoplates is controllable depending on the concentration of bromide ion and PVP in the aqueous mixture. On the basis of these results, a preliminary mechanism is proposed which involves the concurrent crystal growth and oxidative etching on the surface of nanocrystals.
• Holey Gold Nanowires Formed by Photoconversion of Dissipative Nanostructures Emerged at the Aqueous-Organic Interface

  Tetsuro Soejima; Masa-aki Morikawa; Nobuo Kimizuka

  SMALL WILEY-V C H VERLAG GMBH 5 (18) 2043 - 2047 1613-6810 2009/09 [Refereed]
  
• Photoinduced Outgrowth of Gold Nanotadpoles in Aqueous Bilayer Dispersions

  Tetsuro Soejima; Toshio Hasegawa; Masa-aki Morikawa; Nobuo Kimizuka

  CHEMISTRY LETTERS CHEMICAL SOC JAPAN 38 (7) 688 - 689 0366-7022 2009/07 [Refereed]
   

  An aqueous-phase synthesis of gold nanotadpoles by using bilayer membranes as growth regulating factor is newly developed. The gold nanotadpoles are formed by photoreduction of Au(OH)(4)(-) in aqueous bilayer dispersion. The outgrowth of tails occurred from spherical nanoparticles, which are regulated depending on the photoirradiation time.
• Ultrafast photosynthetic reduction of elemental sulfur by Au nanoparticle-loaded TiO2

  T Kiyonaga; T Mitsui; M Torikoshi; M Takekawa; T Soejima; H Tada

  JOURNAL OF PHYSICAL CHEMISTRY B AMER CHEMICAL SOC 110 (22) 10771 - 10778 1520-6106 2006/06 [Refereed]
   

  Nanometer-sized gold particles with varying mean size from 3.2 to 12.2 nm were loaded on the surfaces of TiO2 particles in a highly dispersed state with the loading amount maintained constant (0.46 +/- 0.02 mass %) using the deposition-precipitation method. Light irradiation (lambda(ex) > 300 nm) to a deaerated ethanol TiO2 particle suspension containing elemental sulfur (S-8) led to the energetically uphill reduction of S-8 to H2S. It has been found that this reaction is dramatically enhanced with such a low level of Au loading on TiO2 and that the zero-order rate constant of reaction increases with decreasing mean size of Au nanoparticles (d). The effects of reaction parameters ( substrate concentration, light intensity, temperature) on the rate of reaction were studied to infer the essential reaction mechanism. Further, a kinetic analysis has led to a conclusion that the increase in the rate of reaction with decreasing d results from the improvement of the charge separation efficiency.
• Kinetic and DFT studies on the photoinduced desorption of sulfur from gold nanoparticles loaded on titanium dioxide

  T Kiyonaga; T Mitsui; T Soejima; S Ito; H Tada; T Kawahara; T Akita; K Tanaka; H Kobayashi

  CHEMPHYSCHEM WILEY-V C H VERLAG GMBH 6 (12) 2508 - 2512 1439-4235 2005/12 [Refereed]
  
• Ultrathin gold nanosheets formed by photoreduction at the ionic liquid/water interface

  T Soejima; N Kimizuka

  CHEMISTRY LETTERS CHEMICAL SOC JAPAN 34 (9) 1234 - 1235 0366-7022 2005/09 [Refereed]
   

  Ultrathin, single-crystal line gold nanosheets with thickness of ca. 10nm are successfully obtained in water by photoreduction of Au(OH)(4)(-) ions at the surface of ionic liquid (IL) mu-droplets. The nanosheets produced at the interface are spontaneously extracted into the ionic liquid phase, which effectively prevents the formation of thicker nanoplates.
• Photoinduced dissolution and redeposition of Au nanoparticles supported on TiO2

  T Kawahara; T Soejima; T Mitsui; T Kiyonaga; H Tada; S Ito

  JOURNAL OF COLLOID AND INTERFACE SCIENCE ACADEMIC PRESS INC ELSEVIER SCIENCE 286 (2) 816 - 819 0021-9797 2005/06 [Refereed]
   

  Au particles (mean size ca. 3 nm) supported on TiO2 particles were irradiated by UV light (> 300 nm) in aqueous solutions at 278 K. Photoinduced dissolution of Au nanoparticles followed by redeposition occurred in aqueous solutions containing halogen ions. The dissolution of An nanoparticles yielded a Au(III) complex with a halogen ion; subsequent reduction of the Au(III) complex caused precipitation of larger An particles on TiO2,. (c) 2005 Elsevier Inc. All rights reserved.
• Photoinduced desorption of sulfur from gold nanoparticles loaded on metal oxide surfaces

  H Tada; T Soejima; S Ito; H Kobayashi

  JOURNAL OF THE AMERICAN CHEMICAL SOCIETY AMER CHEMICAL SOC 126 (49) 15952 - 15953 0002-7863 2004/12 [Refereed]
  
• Formation of Au nanoclusters on TiO2 surfaces by a two-step method consisting of Au(III)-complex chemisorption and its photoreduction

  T Soejima; H Tada; T Kawahara; S Ito

  LANGMUIR AMER CHEMICAL SOC 18 (11) 4191 - 4194 0743-7463 2002/05 [Refereed]
   

  The aim of this study is to prepare Au clusters with a mean size (d) of less than 3.0 nm, at which nonmetallic properties can be expected to appear. Au clusters (d < 3.0 nm) have been formed rapidly (<2 min) on TiO2 surfaces by a two-step method consisting of Au(III)-complex chemisorption and subsequent photoreduction (lambda(ex) > 300 nm) at temperatures below 25 degreesC. In the photoreduction of the Au(III) complex to Au-0, chemisorbed and physisorbed H2O on the TiO2 surface acts as a reductant. This method also enables us to produce Au clusters selectively at the UV-irradiated TiO2 surfaces.

Books etc

• Recent Research Developments in Colloids & Interface Research

  2003

Conference Activities & Talks

• 水相中で銅板から直接低温成長可能な酸化銅マイクロフラワー粒子とその機能

  第25回関西表面技術フォーラム  2023/11
• 臭化銀ナノ結晶の水相における新奇な形状制御合成法の開発

  第25回関西表面技術フォーラム  2023/11
• 金とマンガン酸化物で構成されるナノ複合体の簡便合成とその応用

  第25回関西表面技術フォーラム  2023/11
• マンガン酸化物ナノワイヤーの簡便合成とフォトサーマル触媒としての機能発現

  (優秀講演賞)

  第25回関西表面技術フォーラム  2023/11
• ATO-ZnOナノハイブリッド光触媒を用いた酸素二電子還元による過酸化水素合成

  2023年度色材研究発表会  2023/11
• 高密度カーボンナノチューブフォレストによるグアニンの電気化学計測

  化学工学会第54回秋季大会  2023/09
• 種結晶アシスト水熱法による放射状酸化チタンメソ結晶の合成とプラズモニック光触媒への応用

  第74回コロイドおよび界面化学討論会  2023/09
• 金と異種の無機化合物で構成されるナノ複合材料の簡便合成法の開発

  日本化学会第103春季年会  2023/03
• 様々な形状を有するAu-Co複合体のワンポット合成とその機能

  (優秀講演賞)

  第24回関西表面技術フォーラム  2022/11
• Phototherman Catalysis of Manganese Oxide Nanoparticles

  色材協会創立95周年記念会議  2022/10
• ヘテロエピタキシャル接合を有する金ナノ粒子―酸化亜鉛ナノプレートからなるプラズモニック光触媒による純水からの過酸化水素合成

  2022年電気化学秋季大会  2022/09
• 高密度カーボンナノチューブフォレストによるグアニンの電気化学計測

  2022年電気化学秋季大会  2022/09
• 塩化アンチモン（III）で表面修飾した金ナノ粒子担持酸化スズによる過酸化水素人工光合成

  2022年電気化学秋季大会  2022/09
• 低温水相における一次元構造のマンガン酸化物ナノ材料の成長とそのメカニズム解明

  第41回光がかかわる触媒化学シンポジウム  2022/07
• 金とマンガン化合物から成る種々のナノ複合体の室温水相合成

  第41回光がかかわる触媒化学シンポジウム  2022/07
• 2種の形状を有するAu-Co複合体のワンポット合成とその機能性評価

  第41回光がかかわる触媒化学シンポジウム  2022/07
• 金ナノ粒子とコバルト化合物から成るナノ複合体の低温水相合成

  日本化学会 第102春季年会  2022/03
• 金とマンガン化合物で構成されるナノ複合体の簡便合成とその応用

  日本化学会 第102春季年会  2022/03
• マンガン酸化物ナノ構造体の基板表面への直接成長法の開発

  日本化学会 第102春季年会  2022/03
• 金－臭化銀の接合ナノ粒子の合成と表面増強ラマン散乱分光法への応用

  第40回光がかかわる触媒化学シンポジウム  2021/07
• ZnOナノシートの簡便合成法の開発とその応用

  第40回光がかかわる触媒化学シンポジウム  2021/07
• アモルファスマンガン酸化物の焼成プロセスを経由する二酸化マンガンの形状変化・制御

  第40回光がかかわる触媒化学シンポジウム  2021/07
• 金とコバルト化合物から成るナノ複合体の新規簡便合成法の開発

  第40回光がかかわる触媒化学シンポジウム  2021/07
• 金と臭化銀ナノ粒子から成るヤヌス粒子の合成とその光学特性

  第71回コロイドおよび界面化学討論会  2020/09
• マンガン酸化物結晶の新奇形状制御合成法

  日本化学会第100春季年会  2020/03
• 金ナノ粒子－ホウ素クラスター－細胞内ペプチド複合体の作製およびその評価

  日本化学会第100春季年会  2020/03
• ニオブ酸カリウムの新規合成法の開発とその物性

  第21回関西表面技術フォーラム  2019/11
• 金ナノ結晶の形状制御法と複合体合成法の開発

  第21回関西表面技術フォーラム  2019/11
• マンガン酸化物ナノワイヤーアレイの簡便合成法の開発およびメカニズムの解明

  第21回関西表面技術フォーラム  2019/11
• Synthesis and Catalytic Activity of Au/TiO2 Plasmonic Photocatalyst

  日本化学会第99春季年会  2019/03
• Shape-Controlled Manganese-Based Oxides Nanoparticles and Their Function

  日本化学会第99春季年会  2019/03
• Development of Simple Synthetic Method of Manganese Oxides Nanowire Arrays and Their Application

  日本化学会第99春季年会  2019/03
• Low Temperature Synthesis of Anatase-Rutile TiO2 Nanocomposite Photocatalysts

  日本化学会第99春季年会  2019/03
• A Novel and Facile Method for Preparation of Potassium Niobate and its Application

  日本化学会第99春季年会  2019/03
• 水相低温合成法により得られるTiO2ナノ粒子とその光触媒特性  [Not invited]

  第20回関西表面技術フォーラム  2018/11
• 銀による酸化バナジウムの形状制御とその応用  [Not invited]

  第20回関西表面技術フォーラム  2018/11
• マンガン酸化物ナノ粒子の形状制御法の開発  [Not invited]

  第20回関西表面技術フォーラム  2018/11
• 貴金属-AgBr接合ナノ粒子の合成  [Not invited]

  第20回関西表面技術フォーラム  2018/11
• TiO2ナノ粒子の新規低温合成法の開発とその光触媒能  [Not invited]

  第37回光がかかわる触媒化学シンポジウム  2018/07
• 水相低温合成したTiO2粒子が示す有機色素への特異な吸着挙動  [Not invited]

  第37回光がかかわる触媒化学シンポジウム  2018/07
• プラズモニック光触媒を志向したAu-AgBrヤヌス粒子の合成  [Not invited]

  第37回光がかかわる触媒化学シンポジウム  2018/07
• 表面支援レーザー脱離イオン化質量分析法における多用途性TiO2ナノ珊瑚基板  [Not invited]

  日本化学会第98春季年会  2018/03
• 光還元法を用いる金ナノ粒子の形状・構造制御法の開発  [Not invited]

  日本化学会第98春季年会  2018/03
• 金錯体の光還元を利用する金ナノ結晶の合成  [Not invited]

  第19回関西表面技術フォーラム  2017/11
• ペプチドで表面修飾された無機ナノブロックの自己集合挙動  [Not invited]

  2017/11
• マンガン複合酸化物の簡便合成法の開発とその化学的反応性  [Not invited]

  第19回関西表面技術フォーラム  2017/11
• 酸化チタンナノ珊瑚基板を用いた表面支援レーザー脱離イオン化質量分析法の開発  [Not invited]

  第19回関西表面技術フォーラム  2017/11
• Synthesis of Gold Nanocrystals via Photoreduction of Au(III) Complexes  [Not invited]

  International Symposium on Chemistry for Solar Energy Applications 2017  2017/08
• Self-Assembly of Inorganic Nanomaterials via Electrostatic Interaction of Peptide Ligands  [Not invited]

  International Symposium on Chemistry for Solar Energy Applications 2017  2017/08
• Anatase/Rutile TiO2 Nanocoral Substrate for SALDI-MS Analysis  [Not invited]

  International Symposium on Chemistry for Solar Energy Applications 2017  2017/08
• Synthesis of Manganese Oxide-Based Composite Nanomaterials  [Not invited]

  International Symposium on Chemistry for Solar Energy Applications 2017  2017/08
• Synthesis, Characterization, and Reactivity of Monodisperse Manganese Oxide Nanospheres  [Not invited]

  日本化学会第97春季年会  2017/03
• Anatase/Rutile TiO2 Nanocoral Structure Films for Mass Spectrometry  [Not invited]

  日本化学会第97春季年会  2017/03
• Self-Assembly of Metal Nanoparticles via Electrostatic Interaction of Peptide Ligands  [Not invited]

  日本化学会第97春季年会  2017/03
• ガルバニック置換反応を用いたSi基板上へのAuナノ構造体の構築  [Not invited]

  2016年色材研究発表会  2016/10
• アナタース/ルチル接合型TiO2ナノ材料の新規低温合成法の開発  [Not invited]

  2015年材料技術研究協会討論会  2015/11
• Si基板上で起こる特異な形状の金ナノ結晶成長  [Not invited]

  日本化学会第95春季年会  2015/03
• 有機薄膜／Si基板上での金ナノ・マイクロ構造体の形成  [Not invited]

  2014年度色材研究発表会  2014/10
• Si基板上での一・二次元金ナノ結晶の成長  [Not invited]

  日本化学会第94春季年会  2014/03
• 酸化銅ナノアレイの新規低温合成法の開発とその機能  [Not invited]

  第64回コロイドおよび界面化学討論会  2013/09
• 金属酸化物ナノアレイの低温合成法の開発とその特性  [Not invited]

  日本化学会第93春季年会  2013/03  立命館大学びわこ・くさつキャンパス  日本化学会第93春季年会
  
• 酸化銅ナノ構造体の低温合成法の開発  [Not invited]

  表面技術協会第127回講演大会  2013/03  日本工業大学  表面技術協会第127回講演大会
  
• 有機薄膜/Si基板上における特異的な形状の金ナノ結晶形成  [Not invited]

  日本化学会第92春季年会  2012/03  慶応義塾大学日吉キャンパス  日本化学会第92春季年会
  
• マンガン酸化物ナノワイヤーアレイの低温・水相合成法の開発とその物性  [Not invited]

  表面技術協会第125回講演大会  2012/03  東京都市大学  表面技術協会第125回講演大会
  
• 固液界面での散逸ナノ構造による金ナノワイヤーの形成  [Not invited]

  分子ナノシステムの創発化学第3回公開シンポジウム  2012/02  大阪市大阪科学技術センター  分子ナノシステムの創発化学第3回公開シンポジウム
  
• 光に応答した細胞接着制御および薬物パターニングを達成するTiO2 ナノリーフ基板の開発  [Not invited]

  第33回日本バイオマテリアル学会大会  2011/11  京都サルサ  第33回日本バイオマテリアル学会大会
  
• 散逸ナノ構造による金ナノワイヤーの形成  [Not invited]

  2011年色材研究発表会  2011/11  東京都江戸川区タワーホール船堀  2011年色材研究発表会
  
• Formation of Manganese Oxide Nanowire Arrays and Their Application  [Not invited]

  第63回コロイドおよび界面化学討論会  2011/09
• CuOナノ珊瑚構造の低温気相合成法の開発とグルコースセンサーへの応用  [Not invited]

  日本化学会第91春季年会  2011/03  横浜市神奈川大学  日本化学会第91春季年会
  
• Dissipative nanostructures - gold and metal oxide nanowires formed at interfaces  [Not invited]

  Pacifichem 2010  2010/12  ホノルル市 ハワイコンベンションセンター  2010環太平洋国際化学会議
  
• 金属酸化物ナノ珊瑚薄膜の水相低温合成法の開発  [Not invited]

  表面技術協会 ARSコンファレンス  2010/11  藤沢市 KKR江ノ島ニュー向洋  表面技術協会 ARSコンファレンス
  
• 珊瑚状ナノ構造を有する金属酸化物薄膜の低温水相合成法の開発  [Not invited]

  2010年度色材研究発表会  2010/11  東京都江戸川区 タワーホール船堀  2010年度色材研究発表会
  
• 金属酸化物で構成される珊瑚状ナノ薄膜の低温水相合成  [Not invited]

  表面技術協会第122回講演大会  2010/09  仙台市，東北大学  表面技術協会第122回講演大会
  
• 金属酸化物からなる珊瑚状ナノ薄膜の低温水相合成法とその機能  [Not invited]

  日本化学会第90春季年会  2010/03
• Holey Gold Nanowires Formed via Dissipative Self-Organization at the Water/Organic Interface  [Not invited]

  大学間連携第3回国際シンポジウム  2010/01
• 水中におけるアナタース/ルチル接合型TiO2ナノコーラル構造の低温合成とその特性  [Not invited]

  第62回コロイドおよび界面化学討論会  2009/09
• ZnO ナノコーラル構造の低温合成とその表面への色素吸着特性  [Not invited]

  第58回高分子討論会  2009/08
• 水－有機溶媒界面における金錯体の散逸ナノ構造形成と光還元による一次元金ナノ結晶の合成  [Not invited]

  ナノ学会  2009/05
• アナタース/ルチル接合型TiO2ナノグラスの低温・水相合成法の開発とその特性  [Not invited]

  日本化学会第89春季年会  2009/03
• Dissipative Nanostructures formed from Au(III) Salts at the Water/Organic Interface and their in situ Photochemical Conversion to One-Dimensional Gold Nanocrystals  [Not invited]

  Kyushu Univ. Global COE Program / POSTECH Joint Symposium  2009/02
• One-Dimensional Gold Nanocrystals Formed via Dissipative Self-Organization Process at the Water/Organic Interface  [Not invited]

  Global COE Program: Prof. Jean-Marie Lehn Symposium III  2008/10
• 異方的構造を有する金ナノ結晶の新規合成手法開拓  [Not invited]

  第61回コロイドおよび界面化学討論会  2008/09
• Self-Assembly and Interfacial Materials Chemistry in Ionic Liquids  [Not invited]

  The 2nd International Congress on Ionic Liquid (Coil-2)  2007/08
• One-pot Synthesis of Anisotropic Gold Nanocrystals at the Ionic Liquids(ILs)-Water Interfaces  [Not invited]

  Second International Symposium on Chemistry of Coordination Space  2006/12
• Controlled Synthesis of Anisotropic Gold NanoCrystals at the Ionic Liquids(ILs)-Water Interfaces  [Invited]

  International Microwave Power Institute, 40th Annual Symposium  2006/08
• 脂質二分子膜を利用するtadpole型金ナノ結晶の合成  [Not invited]

  第43回化学関連支部合同九州大会  2006/07
• 液－液界面における動的プロセスを利用した金ナノ結晶の合成と構造制御  [Not invited]

  第86回日本化学会春季年会  2006/03
• Construction of Au(Core)-CdS(Shell) type nanocrystals on the surface of titanium dioxide  [Not invited]

  Pacifichem 2005  2005/12
• Kinetic and DFT Studies on the photoinduced desorption of sulfur from Gold nanoparticles loaded on Titanium Dioxide  [Not invited]

  Pacifichem 2005  2005/12
• Interfacial Synthesis of Ultrathin Gold Nanosheets in Ionic Liquid/Water Systems  [Not invited]

  The 12th Molecular Systems Symposium  2005/11
• Synthesis of Gold Nanocrystals at Micro-Interfaces Created in Ionic Liquids  [Not invited]

  The 6th CMC-Kyushu Chemistry Symposium  2005/10
• イオン液体の界面を利用する新しい無機合成法の開発  [Invited]

  第158回溶融塩委員会  2005/10
• イオン液体／水界面を利用する新しい金ナノ・マイクロ結晶の合成と構造制御  [Not invited]

  第54回高分子討論会  2005/09
• Photo-induced Formation of Ultrathin Gold Nanosheets at the Ionic liquid/Water Interface  [Not invited]

  Gordon Research Conference on Chemistry of Supramolecules & Assemblies  2005/06
• イオン性液体／水界面を利用した珊瑚状Auナノシート集合体の合成  [Not invited]

  第85回日本化学会春季年会  2005/03
• 光触媒表面に担持されたAuナノ粒子からの光誘導硫黄脱着  [Not invited]

  九州地区高分子若手研究会・夏の講演会  2004/08
• 酸化チタンに担持された金クラスターの光溶解-再析出現象  [Not invited]

  表面技術協会第106回講演大会  2002/09

Works

• 第3回8大学工学系博士学生フォーラム 九州大学代表

  2006

MISC

• ナノワイヤー，ナノシートが基板に固定化された無機材料の合成

  副島 哲朗  ケミカルエンジニヤリング  61-  (11)  815  -820  2016/11  [Invited]
  
• Synthesis of TiO₂ Nanocoral Structures in Ever-Changing Aqueous Reaction Systems

  Soejima Tetsuro; Jin Ren-Hua; Terayama Yuki  川村理研報告  (21)  155  -160  2011
• Synthesis of anisotropic gold nano-micro crystals using by ionic liquid and water interface

  Tetsuro Soejima; Nobuo Kimizuka  Polymer Preprints, Japan  54-  4651  -4652  2005/12

Industrial Property Rights

• 特願2010-248617:光応答性のパターニングに用いるための基板およびその利用  2010年/11

  副島 哲朗
• 酸化チタン含有ナノ構造体被覆型構造物及びその製造方法
• 金属ナノワイヤーの製造方法（副島哲朗，君塚信夫）
• 貴金属ナノシートとその製造方法（副島哲朗，君塚信夫）

Awards & Honors

• 2021/05 Royal Society of Chemistry Outstanding Reviewers for RSC Advances in 2020
  
• 2015/11 Japan Research Institute of Material Technology Gold Poster Award
   

  受賞者: 副島 哲朗
• 2013/04 The Chemical Society of Japan Outstanding Lecture Award
   

  受賞者: 副島 哲朗
• 2011/11 Japan Society of Colour Material Outstanding Lecture Award
   

  受賞者: 副島 哲朗
• 2011/09 The ACS Applied Materials & Interfaces Award
   

  受賞者: 副島 哲朗
• 2010/11 Japan Society of Colour Material Outstanding Lecture Award
   

  受賞者: 副島 哲朗
• 2006/04 The Chemical Society of Japan Outstanding Lecture Award for Ph. D. student
   JPN

Research Grants & Projects

• Development of growth theory of silver halides nanocrystals and nanocomposites with photocatalytic ability

  Japan Society for the Promotion of Science：Grants-in-Aid for Scientific Research

  Date (from‐to) : 2020/04 -2023/03 

  Author : 副島 哲朗

   

  当該年度においては，ハロゲン化銀の保護剤を用いない形状制御合成について検討した。具体的には，室温において，硝酸銀とハロゲン化ナトリウムの水溶液を混合し，撹拌しながらこれらの二種類の溶液を混合した。硝酸銀とハロゲン化ナトリウム中の銀イオンとハロゲン化物イオンのモル比を変化させて種々の実験を行った。その結果，種々のハロゲン化物イオンに対応するハロゲン化銀ナノ粒子が生成した。得られた粒子について電子顕微鏡観察を行ったところ，臭化銀，塩化銀，ヨウ化銀において，それぞれナノシート，ナノキューブ，形状の崩れたナノシートを形成していることがわかった。 また，昨年度の成果において金と臭化銀の接合化に成功したことから，この接合ナノ粒子を用いて表面増強ラマン散乱分光への応用を検討した。すなわち，接合ナノ粒子分散液をガラス基板に固定化し，そこに色素溶液を滴下してラマン測定を行った。その結果，単純な色素乾燥薄膜と比較して，明らかな表面増強結果が得られた。色素溶液について低濃度と高濃度条件について検討したところ，ある濃度までは濃度とシグナルに比例関係が見られたが，特定の濃度以上ではシグナル強度の飽和が見られた。これは，電場増強された接合界面と，その影響を受ける色素分子の距離に関係があるものと考えられる。また，この結果は，接合界面が増強されたラマン散乱光に関係していることを直接示した結果であると言える。 ハロゲン化銀と金の接合粒子の合成を行っているときに，20面体の金ナノ粒子が生成することを発見した。種々の条件について検討したところ，水溶性高分子であるポリビニルピロリドン（PVP）とハロゲン化物イオンが共存する環境下で金イオンの光還元を行うと，九角形金ナノシートや20面体の金ナノ粒子などが得られることがわかった。この結果は，ハロゲン化物イオンとPVPの協奏的な保護作用によるものであると結論付けた。
• アモルファスを起点とするマンガン酸化物ナノ粒子ライブラリの構築とその応用

  科研費：若手研究（B）

  Date (from‐to) : 2015/04 -2018/03 

  Author : 副島 哲朗
• ナノポーラス無機メンブレンの細孔内構造の精密制御による新しい機能性材料の開発

  科研費：若手研究（B）

  Date (from‐to) : 2010/04 -2012/03 

  Author : 副島 哲朗
• マルチバイオ分析や極微スピン回路への応用を志向した新規磁性材料の創製

  科研費：若手研究（スタートアップ）

  Date (from‐to) : 2008/04 -2010/03 

  Author : 副島 哲朗
• スター型金属/半導体ナノ接合粒子の精密合成と光エネルギー増幅システムの構築

  日本学術振興会：特別研究員奨励費

  Date (from‐to) : 2006/04 -2008/03 

  Author : 副島 哲朗

Committee Membership

• - Today   The Catalysis Society of Japan   Regular Members
• - Today   Japan Society of Colour Material   Regular Members
• - Today   The Surface Finishing Society of Japan   Regular Members
• - Today   Division of Colloid and Surface Chemistry (The Chemical Society of Japan)   Regular Members
• - Today   The Chemical Society of Japan   Regular Members

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https://researchmap.jp/read0133166