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Immobilizing Highly Catalytically Active Pt Nanoparticles inside the Pores of Metal–Organic Framework: A Double Solvents Approach
Journal of the American Chemical Society ( IF 14.4 ) Pub Date : 2012-08-17 , DOI: 10.1021/ja3043905
Arshad Aijaz 1 , Abhi Karkamkar 2 , Young Joon Choi 2 , Nobuko Tsumori 3 , Ewa Rönnebro 2 , Tom Autrey 2 , Hiroshi Shioyama 1 , Qiang Xu 1
Affiliation  

Ultrafine Pt nanoparticles were successfully immobilized inside the pores of a metal-organic framework, MIL-101, without aggregation of Pt nanoparticles on the external surfaces of framework by using a "double solvents" 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.

中文翻译:

将高催化活性 Pt 纳米粒子固定在金属-有机骨架的孔内:双溶剂方法

通过使用“双溶剂”方法,超细 Pt 纳米粒子成功地固定在金属有机框架 MIL-101 的孔内,而没有在框架的外表面上聚集 Pt 纳米粒子。TEM 和电子断层扫描测量清楚地证明了超细 Pt NPs 在整个 MIL-101 内腔的均匀三维分布。由此产生的 Pt@MIL-101 复合材料代表了第一个高活性 MOF 固定金属纳米催化剂,用于所有三个阶段的催化反应:液相氨硼烷水解、固相氨硼烷热脱氢和气相 CO 氧化。
更新日期:2012-08-17
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