Defective Pt nanoparticles encapsulated in mesoporous metal-organic frameworks for enhanced catalysis
Qiang Wang1, Xu-Sheng Wang, Chun-Hui Chen
1State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, 155, Yangqiao Road West, Fuzhou, Fujian 350002, China. ybhuang@fjirsm.ac.cn rcao@fjirsm.ac.cn.
Abstract:
Highly dispersed ultrafine defective Pt nanoparticles (NPs) encapsulated in the mesopores of MIL-101 were successfully achieved for the first time through a facile chemical dealloying approach. PtCo alloy NPs inside the mesoporous MIL-101 were firstly formed via a double-solvent method and the Co species were subsequently selectively etched by diluted nitric acid to achieve the defective Pt NPs. Compared with PtCo alloy NPs, the as-prepared defective Pt NPs showed an improved catalytic activity towards the hydrogenation of nitroarenes under mild conditions.
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