Creation of Various Types of Novel Metal Nanocluster Catalysts with Crown Jewel Structure

2014 Fiscal Year Final Research Report

• Project/Area Number: 25600008
• Research Category: Grant-in-Aid for Challenging Exploratory Research
• Allocation Type: Multi-year Fund
• Research Field: Nanostructural chemistry
• Research Institution: Tokyo University of Science, Yamaguchi
• Principal Investigator: TOSHIMA Naoki 山口東京理科大学, 工学部, 教授 (50011010)
• Co-Investigator(Kenkyū-buntansha): YUKIHIDE Shirashi 山口東京理科大学, 工学部, 教授 (60289303)
• Project Period (FY): 2013-04-01 – 2015-03-31
• Keywords: 金属ナノ粒子 / 多元金属ナノクラスター / クラウン・ジュエル触媒 / 単原子触媒 / 頂点位置換 / グルコース酸素酸化 / 原子構造制御 / 環境に優しい触媒反応

Outline of Final Research Achievements

This research is aimed to develop various catalytically active metal nanocluster catalysts with a Crown Jewel structure via a facile replacement reaction, in which Au atoms easily locate automatically at the top (vertex) sites in other kinds of less noble metal nanoclusters. The Crown Jewel catalyst starting from poly(N-vinyl-2-pyrrolidone)(PVP)-protected IrPd bimetallic nanoclusters has been found to reveal about twice catalytic activity of that starting from Pd nanoclusters for aerobic oxidation of glucose to produce glucoic acid. Since the transition metal clusters like Ni nanoclusters are not stable, the Ni clusters stabilized by alloying with noble metal like Pd have been used as the mother cluster in the next step. Then, the addition of small amount of Au to the PVP-protected NiPd (Ni:Pd = 9:1) mother nanoclusters for the replacement have been shown to improve the catalytic activity about 12 times higher than the NiPd mother nanoclusters.

Free Research Field

ナノテクノロジー　高分子錯体化学　機能性高分子　触媒化学　材料化学