Electrocatalytic Activity of Orientated Metal Nanoparticles

• Project/Area Number: 15K13668
• Research Category: Grant-in-Aid for Challenging Exploratory Research
• Allocation Type: Multi-year Fund
• Research Field: Functional solid state chemistry
• Research Institution: Nagoya University
• Principal Investigator: Kameyama Tatsuya 名古屋大学, 工学研究科, 助教 (40646759)
• Project Period (FY): 2015-04-01 – 2017-03-31
• Project Status: Completed (Fiscal Year 2016)
• Budget Amount: ¥3,900,000 (Direct Cost: ¥3,000,000、Indirect Cost: ¥900,000); Fiscal Year 2016: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000); Fiscal Year 2015: ¥2,210,000 (Direct Cost: ¥1,700,000、Indirect Cost: ¥510,000)
• Keywords: 酸素還元反応 / 電極触媒 / 異方性ナノ粒子 / 金八面体ナノ粒子 / コアシェル構造 / プラズモン / 配向制御 / アンダーポテンシャルデポジション / 異方性金属ナノ粒子 / ガルバニック置換 / コア-シェル構造 / 局在表面プラズモン共鳴 / ナノ構造制御 / 金属ナノ粒子 / 異方性形状 / 燃料電池

Outline of Final Research Achievements

Octahedral Au-core Pt-shell (Au@Pt) nanoparticles were successfully prepared via a galvanic replacement of Cu monolayer underpotentially deposited on Au core with a Pt monolayer. Thus-obtained octahedral Au@Pt nanoparticles showed larger electrocatalytic activity for oxygen reduction reaction compared with spherical Au@Pt or commercial Pt nanoparticles. The visible light irradiation to Au@Pt nanoparticles-immobilized electrodes enlarged a cathodic current of oxygen reduction reaction, suggesting that the electrocatalytic activity of Pt shell layer was enhanced by the photoexcitation of localized surface plasmon resonance peak of octahedral Au-core particles

Research Products

• [Journal Article] Enhancement of electrocatalytic activity of octahedral Au@Pt core-shell nanoparticles by the surface plasmon excitation (2017)
  • Author(s): Tatsuya Kameyama, Kentaro Sato, Tsukasa Torimoto
  • Journal Title: Proc. SPIE 10252 Volume: － Pages: 102521E-102521E
  • DOI: 10.1117/12.2274899
  • Peer Reviewed
• [Presentation] Enhancement of Electrocatalytic Activity of Octahedral Au@PtCore-Shell Nanoparticles by the Surface Plasmon Excitation (2017)
  • Author(s): Tatsuya Kameyama, Kentaro Sto, Tsukasa Torimoto
  • Organizer: Optics and Photonics International Congress 2017
  • Place of Presentation: 横浜
  • Year and Date: 2017-04-19
  • Int'l Joint Research
• [Presentation] 電気化学的手法を用いた金コア-白金シェル八面体ナノ粒子の作製と酸素還元活性 (2017)
  • Author(s): 佐藤健太郎、亀山達矢、鳥本司
  • Organizer: 電気化学会大84回大会
  • Place of Presentation: 東京
  • Year and Date: 2017-03-15
• [Presentation] 八面体金ナノ粒子への白金析出による新規コア・シェル構造体の作製 (2016)
  • Author(s): 佐藤健太郎、亀山達矢、鳥本司
  • Organizer: CSJ化学フェスタ
  • Place of Presentation: 東京
  • Year and Date: 2016-11-14
• [Presentation] Preparation of Au-Ag Alloy Nanoparticles via Ionic Liquid/Metal Sputter Deposition and Their Application (2016)
  • Author(s): Tatsuya Kameyama, Eisaku Kumazawa, Susumu, Kuwabata, Tsukasa Torimoto
  • Organizer: The 7the International Conference on Metamaterials, Photonic Crystals and Plasmonics
  • Place of Presentation: Malaga, Spain
  • Year and Date: 2016-07-25
  • Int'l Joint Research / Invited
• [Presentation] Plasmon-induced Photosensitization of Porous TiO2 Electrodes with Au-Ag Alloy Nanoparticles Prepared by Ionic Liquid/Metal Sputter Deposition (2016)
  • Author(s): Tatsuya Kameyama, Eisaku Kumazawa, Susumu Kuwabata, Tsukasa Torimoto
  • Organizer: Optical Manipulation Conference' 16
  • Place of Presentation: Yokohama, Japan
  • Year and Date: 2016-05-18
  • Int'l Joint Research