Influence of the Au/Ag Ratio on the Catalytic Activity of Dendrimer-Encapsulated Bimetallic Nanoparticles in Microreactors

被引：0
|
作者：
Roberto Ricciardi
Jurriaan Huskens
Willem Verboom
机构：
[1] University of Twente,Laboratory of Molecular Nanofabrication, MESA+ Institute for Nanotechnology
来源：
Journal of Flow Chemistry | 2015年 / 5卷
关键词：
flow microreactors; nanoparticles; heterogeneous catalysis; reductions; nanoalloys;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
Dendrimer-encapsulated Au/Ag alloy nanoparticles (Au/Ag DENs) were covalently attached to a monolayer-functionalized inner surface of glass microreactors. The influence of the bimetallic alloy structure and of the different metal ratios was investigated for the reduction of 4-nitrophenol using NaBH4. TheAu/Ag-dendrimer nanocomposite with a 1:1 Au/Ag metal ratio showed the highest activity as compared to other metal ratios and to pure Ag and Au. The dendrimer template exerted a stabilizing effect for six consecutive days of use with almost no decrease in conversion. This strategy enables the screening and investigation of a variety of bimetallic nanocatalysts in continuous-flow microreactors.
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页码：228 / 233
页数：5
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