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Tailoring Crystal Facets of Metal–Organic Layers to Enhance Photocatalytic Activity for CO 2 Reduction
Author(s) -
Yang Wei,
Wang HongJuan,
Liu RuiRui,
Wang JiaWei,
Zhang Chao,
Li Chao,
Zhong DiChang,
Lu TongBu
Publication year - 2021
Publication title -
angewandte chemie
Language(s) - English
Resource type - Journals
eISSN - 1521-3757
pISSN - 0044-8249
DOI - 10.1002/ange.202011068
Subject(s) - catalysis , photocatalysis , metal , nickel , oxide , crystal (programming language) , crystal structure , materials science , inorganic chemistry , nanocrystal , chemistry , crystallography , nanotechnology , organic chemistry , metallurgy , computer science , programming language
It is common that different crystal facets in metal and metal oxide nanocrystals display different catalytic performances, whereas such phenomena have been rarely documented in metal–organic frameworks (MOFs). Herein, we demonstrate for the first time that a nickel metal–organic layer (MOL) exposing rich (100) crystal facets (Ni‐MOL‐100) shows a much higher photocatalytic CO 2 ‐to‐CO activity than the one exposing rich (010) crystal facets (Ni‐MOL‐010) and its bulky counterpart (bulky Ni‐MOF), with a catalytic activity up to 2.5 and 4.6 times more active than Ni‐MOL‐010 and bulky Ni‐MOF, respectively. Theoretical studies reveal that the two coordinatively unsaturated Ni II ions with a close distance of 3.50 Å on the surface of Ni‐MOL‐100 enables synergistic catalysis, leading to more favorable energetics in CO 2 reduction than that of Ni‐MOL‐010.