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题名: Oxygen vacancies promoted interfacial charge carrier transfer of CdS/ZnO heterostructure for photocatalytic hydrogen generation
作者: Xie, Ying Peng;  Yang, Yongqiang;  Wang, Guosheng;  Liu, Gang
发表日期: 2017-10-1
摘要: The solid-state Z-scheme trinary/binary heterostructures show the advantage of utilizing the high-energy photogenerated charge carriers in photocatalysis. However, the key factors controlling such Z-scheme in the binary heterostructures are still unclear. In this paper, we showed that oxygen vacancies could act as an interface electron transfer mediator to promote the direct Z-scheme charge transfer process in binary semiconductor heterostructures of CdS/ZnS. Increasing the concentration of surface oxygen vacancies of ZnO crystal can greatly enhance photocatalytic hydrogen generation of CdS/ZnO heterostructure. This was attributed to the strengthened direct Z-scheme charge transfer process in CdS/ZnO, as evidenced by steady-state/time-resolved photoluminescence spectroscopy and selective photodeposition of metal particles on the heterostructure. (C) 2017 Elsevier Inc. All rights reserved.
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Recommended Citation:
Xie, Ying Peng,Yang, Yongqiang,Wang, Guosheng,et al. Oxygen Vacancies Promoted Interfacial Charge Carrier Transfer Of Cds/zno Heterostructure For Photocatalytic Hydrogen Generation[J]. Journal Of Colloid And Interface Science,2017,503:198-204.

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