Syntheses of trimetallic nanocrystals and their catalytic applications

2016 Fiscal Year Final Research Report

• Project/Area Number: 25286003
• Research Category: Grant-in-Aid for Scientific Research (B)
• Allocation Type: Partial Multi-year Fund
• Section: 一般
• Research Field: Nanostructural chemistry
• Research Institution: Kyushu University
• Principal Investigator: TSUJI Masaharu 九州大学, 炭素資源国際教育研究センター, 学術研究員 (30038608)
• Co-Investigator(Kenkyū-buntansha): 吾郷 浩樹 九州大学, 先導物質化学研究所, 准教授 (10356355) ; 辻 剛志 島根大学, 総合理工学研究科(研究院), 准教授 (50284568)
• Project Period (FY): 2013-04-01 – 2017-03-31
• Keywords: 三元系金属 / コア・シェル微結晶 / 触媒 / 低温合金化 / マイクロ波加熱 / エピタキシャル成長

Outline of Final Research Achievements

Recently, extensive studies have been carried out on the syntheses and applications of polymetallic nanoparticles because they have unique electric, optical, magnetic, and catalytic properties which are absent in monometallic particles. In this study, we attempted to prepare new trimetallic nanoparticles for their catalytic applications. We succeeded in the preparation of Ag@PdAg@Ag nanorods and clarified their unique epitaxial growth mechanism involving alloying between intermediate Pd and outer Ag layers. Alloying between Pd and Ag layers were explained by ununiform distortion of Pd layers. We also succeeded in syntheses of AgPd@Pd/TiO2 catalysts for hydrogen production from decomposition of formic acid at room temperature and PtxY/carbon catalysts for oxygen reduction reaction in fuel cells. The latter catalysts are useful for the application to fuel cell vehicle in the near future.

Free Research Field

ナノマテリアル化学