Journal
APPLIED CATALYSIS B-ENVIRONMENTAL
Volume 238, Issue -, Pages 19-26Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.apcatb.2018.07.006
Keywords
Nanorod heterostructure arrays; Z-scheme heterojunction; Type-II heterojunction; Anti-photocorrosion
Funding
- National Natural Science Foundation of China [U1463204, 21173045, 20903023]
- Award Program for Minjiang Scholar Professorship
- Natural Science Foundation of Fujian Province for Distinguished Young Investigator Rolling Grant [2017J07002]
- Independent Research Project of State Key Laboratory of Photocatalysis on Energy and Environment [2014A05]
- first Program of Fujian Province for Top Creative Young Talents
- Program for Returned High-Level Overseas Chinese Scholars of Fujian province
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The design and construction of semiconductor-based photocatalysts with high activity and stability toward redox reactions is an imperative requirement for practical photocatalytic applications. Here, we report that tuning light irradiation from visible light to UV-vis light can simultaneously improve the photocatalytic activity and stability of ternary ZnO-CdS-MoS2(ZCM) heterostructure catalyst for H-2 evolution, which is enabled by switching the interfacial charge transfer channel from the conventional type-II charge transfer pathway to the direct Z-scheme pathway. The Z-scheme system boosts more efficient charge carrier separation and consumption of holes and electrons for respective redox processes, thereby resulting in more distinct activity enhancement and particularly photocorrosion inhibition than the type-II system over the ZCM photocatalyst.
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