稳定器(航空)
催化作用
胶体金
化学
纳米颗粒
甘油
氯化物
还原剂
核化学
无机化学
有机化学
材料科学
纳米技术
机械工程
工程类
作者
Alberto Villa,Di Wang,Dang Sheng Su,Laura Prati
出处
期刊:Chemcatchem
[Wiley]
日期:2009-11-30
卷期号:1 (4): 510-514
被引量:91
标识
DOI:10.1002/cctc.200900118
摘要
Abstract Gold nanoparticles (Au NPs), stabilized by polyvinylalcohol (PVA), tetrakishydroxypropylphosphonium chloride (THPC), and citrate, have been synthesized and tested in the liquid‐phase oxidation of glycerol. THPC‐stabilized Au NPs have been found to exhibit remarkable catalytic activity (TOF=2478 h −1 ) in comparison to PVA‐ and citrate‐stabilized nanoparticles (TOF=715 and 160 h −1 , respectively). The catalytic results can be explained in terms of particle size but aging treatment also revealed the influence of the protective agent. PVA as stabilizer produced small and quite stable gold nanoparticles differently from the THPC system. However PVA also limits the accessibility of reactant to the active site.
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