Design of Plasmonic Metal Catalysts using Microwave Heating and Meso Space

2015 Fiscal Year Final Research Report

• Project/Area Number: 26620194
• Research Category: Grant-in-Aid for Challenging Exploratory Research
• Allocation Type: Multi-year Fund
• Research Field: Inorganic industrial materials
• Research Institution: Osaka University
• Principal Investigator: Yamashita Hiromi 大阪大学, 工学(系)研究科(研究院), 教授 (40200688)
• Project Period (FY): 2014-04-01 – 2016-03-31
• Keywords: プラズモン / マイクロ波 / メソ空間 / 金属触媒 / ナノ粒子 / 水素構造 / 水素貯蔵 / 銀微粒子

Outline of Final Research Achievements

Size- and color-controlled Ag nano particles(NPs) were successfully synthesized within the mesopore of SBA-15 by the microwave-assisted alcohol reduction. The Ag NPs exhibited catalytic activity in the H2 production from NH3BH3 under the dark condition,and higher catalytic performance was observed in smaller Ag NPs. In addition,the catalytic performance was specifically enhanced by light irradiation.It should be noted that the order of increasing catalytic performance was in close agreement with the order of absorption intensity by the Ag-LSPR. From the results of thermal effect,wavelength dependence and charge scavenger,it can be concluded that the H2 production reaction was promoted by Lewis acid effect of positive charge generated by charge separation derived from Ag-LSPR.This study verified a promising approach for the preparation of highly-ordered metallic NPs and the enhancement of catalytic performance under mild condition.

Free Research Field

化学