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Binding Site Effect in Metal‐Organic Frameworks for Property Regulation of Metal Nanoparticles
Author(s) -
Wu Peng,
Shen Yu,
Li Hongfeng,
Shi Wenxiong,
Zhang Lulu,
Pan Ting,
Pei Wenbo,
Zhang Weina,
Huo Fengwei
Publication year - 2021
Publication title -
small structures
Language(s) - English
Resource type - Journals
ISSN - 2688-4062
DOI - 10.1002/sstr.202000119
Subject(s) - metal organic framework , nanoparticle , metal , nanotechnology , catalysis , materials science , dispersion (optics) , metal ions in aqueous solution , chemical engineering , chemistry , organic chemistry , adsorption , metallurgy , physics , engineering , optics
Metal nanoparticles (MNPs) supported on metal–organic frameworks (MOFs) have exhibited excellent performance in various catalytic reactions. As a class of crystal catalysts, the roles played by MOFs different positions in regulating the MNPs properties are distinct. It is therefore meaningful to clarify the influence of different positions of MOFs on MNPs to help reveal the structure–activity relationship. However, the random dispersion of MNPs in the MOFs matrixes is usually an obstacle existing in the traditional preparation methods. Herein, a facile strategy is developed to precisely control the MNPs growth behavior on the target binding sites of MOFs. The MNPs on edges of MOFs show significantly improved hydrogen evolution reaction performance in comparison to those on the planes of MOFs, mainly because the electronic structure of MNPs is regulated by special interface originating from MNPs growth on the edges of MOFs, which provides high density of unsaturated copper ions. The effect of different binding sites of MOFs on MNPs properties is clarified, which is highly desired for fine‐tuning the structures and properties of the MOF composites.