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Construction of Novel CdS/SnNb 2 O 6 Heterojunctions with Enhanced Photocatalytic Degradation Activity Under Visible Light
Author(s) -
Wu Wen,
Xuan Yawen,
Jin Yu,
Liang Ximeng,
Meng Suci,
Chen Min
Publication year - 2018
Publication title -
european journal of inorganic chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.667
H-Index - 136
eISSN - 1099-0682
pISSN - 1434-1948
DOI - 10.1002/ejic.201800493
Subject(s) - photocatalysis , heterojunction , photocurrent , charge carrier , hydrothermal circulation , semiconductor , chemistry , degradation (telecommunications) , visible spectrum , optoelectronics , photochemistry , chemical engineering , nanotechnology , materials science , catalysis , organic chemistry , telecommunications , computer science , engineering
‐Accelerating the photo‐induced charge carrier transfer and improving charge utilization are critical for enhancing the photocatalytic activity of photocatalysts. In this work, we successfully constructed CdS/SnNb 2 O 6 heterojunction photocatalysts by a facile hydrothermal method. The obtained CdS/SnNb 2 O 6 heterojunction exhibited better photocatalytic performance than pristine CdS and SnNb 2 O 6 , and the photocatalytic activity of the optimal ratio sample (40 % CdS) was 3.2 and 28.5 times as high as that of the pristine CdS and SnNb 2 O 6 , respectively. On the basis of the PL spectra, transient photocurrent response, trapping experiments of the active species, and ESR results, the possible charge carrier transfer and photocatalytic mechanisms of the CdS/SnNb 2 O 6 heterojunction photocatalyst have been illustrated. We demonstrated that the combination of CdS and SnNb 2 O 6 can greatly boost the photo‐generated charge carrier separation and therefore enhance the photocatalytic activity. Our work opens up a new insight for development of semiconductor photocatalysts with high efficiency.