Immobilizing Highly Catalytically Active Pt Nanoparticles inside the Pores of Metal鈥揙rganic Framework: A Double Solvents Approach
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- 作者：Arshad Aijaz ; Abhi Karkamkar ; Young Joon Choi ; Nobuko Tsumori ; Ewa R枚nnebro ; Tom Autrey ; Hiroshi Shioyama ; Qiang Xu
- 刊名：The Journal of the American Chemical Society
- 出版年：2012
- 出版时间：August 29, 2012
- 年：2012
- 卷：134
- 期：34
- 页码：13926-13929
- 全文大小：245K
- 年卷期：v.134,no.34(August 29, 2012)
- ISSN：1520-5126
文摘
Ultrafine Pt nanoparticles were successfully immobilized inside the pores of a metal鈥搊rganic framework, MIL-101, without aggregation of Pt nanoparticles on the external surfaces of framework by using a 鈥渄ouble solvents鈥?method. TEM and electron tomographic measurements clearly demonstrated the uniform three-dimensional distribution of the ultrafine Pt NPs throughout the interior cavities of MIL-101. The resulting Pt@MIL-101 composites represent the first highly active MOF-immobilized metal nanocatalysts for catalytic reactions in all three phases: liquid-phase ammonia borane hydrolysis, solid-phase ammonia borane thermal dehydrogenation, and gas-phase CO oxidation.