Supported monodisperse Pt nanoparticles from [Pt3(CO)3(μ2-CO)3]5(2-) clusters for investigating support-Pt interface effect in catalysis.
Supported monodisperse Pt nanoparticles from [Pt3(CO)3(μ2-CO)3]5(2-) clusters for investigating support-Pt interface effect in catalysis.
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DOI：
10.1039/c3dt50942g
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发表时间：
2013-08
影响因子：
4
通讯作者：
Guangxu Chen;Huayan Yang;Binghui Wu;Yanping Zheng;N. Zheng
中科院分区：
文献类型：
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作者：
Guangxu Chen;Huayan Yang;Binghui Wu;Yanping Zheng;N. Zheng
本文提出了一种无表面活性剂的方法来从[Pt 3（CO）3（μ2-CO）3]5（2-）分子簇制备单分散的Pt纳米粒子。该策略允许在不同的氧化物载体上容易地沉积相同尺寸的Pt纳米颗粒，以明确地研究贵金属和金属氧化物之间的催化界面效应。本研究表明，Fe 2 O3是比TiO 2、CeO 2和SiO2更优越的上级载体，可以制备出具有高活性的负载型Pt纳米颗粒，用于CO氧化，这表明Pt和铁氧化物之间的界面是O2活化和CO氧化的活性位点。
Here we present a surfactant-free strategy to prepare supported monodisperse Pt nanoparticles from molecular [Pt3(CO)3(μ2-CO)3]5(2-) clusters. The strategy allows facile deposition of same-sized Pt nanoparticles on various oxide supports to unambiguously study the interface effect between noble metal and metal oxide in catalysis. In this study, Fe2O3 is demonstrated to be a superior support over TiO2, CeO2 and SiO2 to prepare highly active supported Pt nanoparticles for CO oxidation, which indicates that the interfaces between Pt and iron oxide are the active sites for O2 activation and CO oxidation.