Premium
Controllable Encapsulation of “Clean” Metal Clusters within MOFs through Kinetic Modulation: Towards Advanced Heterogeneous Nanocatalysts
Author(s) -
Liu Hongli,
Chang Lina,
Bai Cuihua,
Chen Liyu,
Luque Rafael,
Li Yingwei
Publication year - 2016
Publication title -
angewandte chemie
Language(s) - English
Resource type - Journals
eISSN - 1521-3757
pISSN - 0044-8249
DOI - 10.1002/ange.201511009
Subject(s) - nanomaterial based catalyst , selectivity , chemistry , chemical engineering , platinum , pulmonary surfactant , rational design , nanotechnology , metal , catalysis , materials science , combinatorial chemistry , organic chemistry , biochemistry , engineering
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.