用于在催化中研究载体-铂界面效应的负载型单分散 Pt 纳米粒子，由 [Pt3(CO)3(μ2-CO)3]5(2-) 簇提供。
Supported monodisperse Pt nanoparticles from [Pt3(CO)3(μ2-CO)3]5(2-) clusters for investigating support-Pt interface effect in catalysis.
机构信息
State Key Laboratory for Physical Chemistry of Solid Surfaces, Collaborative Innovation Center of Chemistry for Energy Materials, and Department of Chemistry, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, China.
出版信息
Dalton Trans. 2013 Sep 21;42(35):12699-705. doi: 10.1039/c3dt50942g.
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.
在这里，我们提出了一种无表面活性剂的策略，从分子[Pt3(CO)3(μ2-CO)3]5(2-)簇中制备负载的单分散 Pt 纳米粒子。该策略允许在各种氧化物载体上方便地沉积相同尺寸的 Pt 纳米粒子，从而可以明确地研究在催化中贵金属与金属氧化物之间的界面效应。在这项研究中，Fe2O3 被证明是比 TiO2、CeO2 和 SiO2 更优越的载体，可用于制备用于 CO 氧化的高活性负载型 Pt 纳米粒子，这表明 Pt 与氧化铁之间的界面是 O2 活化和 CO 氧化的活性位。
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