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Amino‐Assisted Anchoring of CsPbBr 3 Perovskite Quantum Dots on Porous g‐C 3 N 4 for Enhanced Photocatalytic CO 2 Reduction
Author(s) -
Ou Man,
Tu Wenguang,
Yin Shengming,
Xing Weinan,
Wu Shuyang,
Wang Haojing,
Wan Shipeng,
Zhong Qin,
Xu Rong
Publication year - 2018
Publication title -
angewandte chemie
Language(s) - English
Resource type - Journals
eISSN - 1521-3757
pISSN - 0044-8249
DOI - 10.1002/ange.201808930
Subject(s) - photocatalysis , perovskite (structure) , halide , quantum dot , quantum yield , materials science , yield (engineering) , acetonitrile , porosity , photochemistry , nanotechnology , chemical engineering , chemistry , inorganic chemistry , catalysis , crystallography , organic chemistry , optics , composite material , physics , engineering , fluorescence
Halide perovskite quantum dots (QDs) have great potential in photocatalytic applications if their low charge transportation efficiency and chemical instability can be overcome. To circumvent these obstacles, we anchored CsPbBr 3 QDs (CPB) on NH x ‐rich porous g‐C 3 N 4 nanosheets (PCN) to construct the composite photocatalysts via N−Br chemical bonding. The 20 CPB‐PCN (20 wt % of QDs) photocatalyst exhibits good stability and an outstanding yield of 149 μmol h −1 g −1 in acetonitrile/water for photocatalytic reduction of CO 2 to CO under visible light irradiation, which is around 15 times higher than that of CsPbBr 3 QDs. This study opens up new possibilities of using halide perovskite QDs for photocatalytic application.