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Cadmium Sulfide Nanorods Decorated with Copper Sulfide via One‐Step Cation Exchange Approach for Enhanced Photocatalytic Hydrogen Evolution under Visible Light
Author(s) -
Sun Zijun,
Liu Xiang,
Yue Qiudi,
Jia Hongxing,
Du Pingwu
Publication year - 2016
Publication title -
chemcatchem
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.497
H-Index - 106
eISSN - 1867-3899
pISSN - 1867-3880
DOI - 10.1002/cctc.201500789
Subject(s) - photocatalysis , cadmium sulfide , nanorod , photoluminescence , hydrogen production , water splitting , photocatalytic water splitting , materials science , quantum yield , visible spectrum , hydrogen , copper , photochemistry , copper sulfide , inorganic chemistry , chemical engineering , chemistry , nanotechnology , catalysis , optoelectronics , optics , organic chemistry , physics , fluorescence , engineering , metallurgy
Photocatalytic hydrogen production by means of water splitting has attracted significant attention to convert solar energy into chemical energy. In this present study, a facile one‐step cation exchange approach was used to prepare Cu x S decorated on CdS nanorods (Cu x S/CdS NRs, x =1–2) for enhanced photocatalytic hydrogen production in water under visible light irradiation ( λ >420 nm). Under optimal conditions, the highest H 2 production rate achieved was ≈111 μmol h −1 and the apparent quantum yield reached ≈7 %. Efficient transfer processes of photogenerated charge carriers from CdS to Cu x S, which can be attributed to the uniform distribution of Cu x S on the CdS surface, were confirmed by steady‐state photoluminescence (PL) spectra and time‐resolved photoluminescence spectra. All the results indicate that this low‐cost cation exchange reaction is a promising method to construct an efficient system for photocatalytic hydrogen evolution.