Synthesis and evaluation of single-particle catalyst produced from liquid droplets by use of tandem-trap apparatus

• Project/Area Number: 26410024
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Multi-year Fund
• Section: 一般
• Research Field: Physical chemistry
• Research Institution: Gakushuin University
• Principal Investigator: Kohno Jun-ya 学習院大学, 理学部, 教授 (90557753)
• Project Period (FY): 2014-04-01 – 2017-03-31
• Project Status: Completed (Fiscal Year 2016)
• Budget Amount: ¥4,940,000 (Direct Cost: ¥3,800,000、Indirect Cost: ¥1,140,000); Fiscal Year 2016: ¥390,000 (Direct Cost: ¥300,000、Indirect Cost: ¥90,000); Fiscal Year 2015: ¥1,820,000 (Direct Cost: ¥1,400,000、Indirect Cost: ¥420,000); Fiscal Year 2014: ¥2,730,000 (Direct Cost: ¥2,100,000、Indirect Cost: ¥630,000)
• Keywords: 単一粒子触媒 / イオントラップ / 液滴 / サーモグラフィー / ラマン分光法 / 液滴混合 / 触媒評価

Outline of Final Research Achievements

Materials work in multi-component forms. A wide range of compositions must be tested to obtain the optimum composition for a specific application. We propose optimization using a series of small levitated single particles synthesized from droplets with ingredients inside. This method enables the rapid examination of the properties of particles with a wide variety of compositions. The particle composition can be controlled by merging a predetermined number of droplets containing the component materials as a solute. We aim to optimize catalytic activity of multicomponent particles which catalyze gas-phase reactions. We developed a reactivity-evaluation system of a single particle levitated in an electrodynamic trap, and measured a CO-oxidation reaction catalyzed by a single-particle catalyst of gold-supported titanium dioxide (Au/TiO2). The reactivity of the catalyst is observed from temperature rise by the heat of reaction measured by the black-body radiation.

Research Products

• [Journal Article] Development of Tandem Electrodynamic Trap Apparatus for Merging Charged Droplets and Spectroscopic Characterization of Resultant Dried Particle (2016)
  • Author(s): Jun-ya Kohno, Tetsu Higashiura, Takaaki Eguchi, Shumpei Miura, Masato Ogawa
  • Journal Title: J. Phys. Chem. B Volume: 120 Issue: 31 Pages: 7696-7703
  • DOI: 10.1021/acs.jpcb.6b04170
  • Peer Reviewed / Acknowledgement Compliant
• [Presentation] タンデムトラップ - ラマン分光装置による単一微粒子の合成と同定 (2016)
  • Author(s): 江口貴昭，小川雅人，河野 淳也
  • Organizer: 日本化学会第96春季年会
  • Place of Presentation: 京都
  • Year and Date: 2016-03-27
• [Presentation] タンデムトラップ反応装置におけるトラップ粒子搬送機構の開発とトラップ内での2液滴混合 (2016)
  • Author(s): 小川雅人，江口貴昭，河野 淳也
  • Organizer: 日本化学会第96春季年会
  • Place of Presentation: 京都
  • Year and Date: 2016-03-27
• [Presentation] 触媒微粒子の合成評価を目指した粒子トラップーラマン分光装置の開発 (2015)
  • Author(s): 江口貴昭，河野 淳也
  • Organizer: 第9回 分子科学討論会
  • Place of Presentation: 東京
  • Year and Date: 2015-09-16
• [Presentation] Development of Raman spectrometer for evaluation of single particle trapped in Paul trap (2015)
  • Author(s): Takaaki Eguchi, Jun-ya Kohno
  • Organizer: 2nd International Symposium on Weak Molecular Interactions
  • Place of Presentation: 東京
  • Year and Date: 2015-03-05 – 2015-03-06