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Novel 3D Semiconducting Open‐Frameworks based on Cuprous Bromides with Visible Light Driven Photocatalytic Properties
Author(s) -
Lei XiaoWu,
Yue ChengYang,
Wei JunChao,
Li RuiQing,
Mi FuQi,
Li Yan,
Gao Lu,
Liu QuanXiu
Publication year - 2017
Publication title -
chemistry – a european journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.687
H-Index - 242
eISSN - 1521-3765
pISSN - 0947-6539
DOI - 10.1002/chem.201702736
Subject(s) - photocatalysis , visible spectrum , materials science , optoelectronics , semiconductor , photochemistry , chemical engineering , nanotechnology , chemistry , catalysis , engineering , biochemistry
Visible light driven photocatalysts based on crystalline microporous metal halogenides received much less attention compared with dense or composite oxide semiconductors. Using the well‐known photosensitive transition metal‐complexes [TM(2,2‐bipy) 3 ] 2+ (TM=Fe, Co, Ni, Ru) as templates, a special three‐dimensional (3D) metal halogenide framework of [TM(2,2‐bipy) 3 ]Cu 4 Br 6 was designed with [Cu 4 Br 4 ] cluster as 4‐connected node. These microporous materials feature narrow band gaps and stable visible light driven photocatalytic properties including water reduction to provide H 2 and photodegradation of organic pollutants. The study of electronic band structure shows that the TM complexes effectively prevent the recombination of photo‐induced electron/hole pairs leading to excellent photocatalytic activity and photochemical stability. This work represents the first 3D microporous metal halogenides used as visible light driven photocatalyst to provide hydrogen energy.