摘要
Au纳米粒子(AuNPs),特别是小粒径(~1 nm)AuNPs的粒径、形貌和表面状态对其催化性能有着重要影响。本文介绍了以小粒径Ag纳米粒子(<5 nm)为牺牲剂,通过金属置换反应,在SiO_2亚微球上生长表面裸露的小粒径AuNPs。由于Au NPs表面完全暴露该材料在氧化还原催化方面具有广阔的应用前景。
The particle size,morphology and surface state of Au nanoparticles(AuNPs),especially small(~1 nm nm)AuNPs,had important effects on their catalytic performance.In this paper,small size AgNPs(<5 nm)were used as sacrificial agent to deposit surface-exposed fine AuNPs(~1 nm)on SiO_2 sub-microspheres by metal substitution reaction.This material had broad application prospects in redox catalysis.
引文
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