Controllable Encapsulation of "Clean" Metal Clusters within MOFs through Kinetic Modulation: Towards Advanced Heterogeneous Nanocatalysts

被引：209
作者：
Liu, Hongli [1 ]
Chang, Lina [1 ]
Bai, Cuihua [1 ]
Chen, Liyu [1 ]
Luque, Rafael [2 ]
Li, Yingwei [1 ]
机构：
[1] S China Univ Technol, Sch Chem & Chem Engn, Guangzhou 510640, Guangdong, Peoples R China
[2] Univ Cordoba, Dept Quim Organ, Edif Marie Curie,Ctra Nnal IVa Km 396, Cordoba 14014, Spain
来源：
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION | 2016年 / 55卷 / 16期
基金：
中国博士后科学基金;
关键词：
encapsulation; heterogeneous catalysis; metal clusters; metal-organic frameworks; platinum; ORGANIC FRAMEWORKS; GOLD CLUSTERS; CATALYTIC PERFORMANCE; SOFT ACIDS; NANOPARTICLES; NANOCRYSTALS; SIZE; OXIDATION; SHELL; CORE;
D O I：
10.1002/anie.201511009
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
Surfactant-free tiny Pt clusters were successfully encapsulated within MOFs with controllable size and spatial distribution by a novel kinetically modulated one-step strategy. Our synthesis relies on the rational manipulation of the reduction rate of Pt ions and/or the growth rate of MOFs by using H-2 as assistant reducing agent and/or acetic acid as MOF-formation modulator. The as-prepared Pt@MOF core-shell composites exhibited exceedingly high activity and excellent selectivity in the oxidation of alcohols as a result of the ultrafine clean Pt clusters, as well as interesting molecular-sieving effects derived from the outer platinum-free MOF shell.
引用
收藏
页码：5019 / 5023
页数：5
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