Highly Efficient Visible-Light-Driven Photocatalytic Hydrogen Production Using Robust Noble-Metal-Free Zn0.5Cd0.5S@Graphene Composites Decorated with MoS2 Nanosheetsopen access
- Authors
- Madhusudan, Puttaswamy; Shi, Run; Chandrashekar, Bananakere Nanjegowda; Xiang, Shengling; Smitha, Ankanahalli Shankaregowda; Wang, Weijun; Zhang, Haichao; Zhang, Xian; Amini, Abbas; Cheng, Chun
- Issue Date
- Mar-2020
- Publisher
- WILEY
- Keywords
- hydrogen evolution; MoS2 nanosheets; photocatalysis; photodeposition; ZnxCd1-xS heterojunction
- Citation
- ADVANCED MATERIALS INTERFACES, v.7, no.12
- Indexed
- SCIE
SCOPUS
- Journal Title
- ADVANCED MATERIALS INTERFACES
- Volume
- 7
- Number
- 12
- URI
- https://scholarworks.bwise.kr/hanyang/handle/2021.sw.hanyang/191872
- DOI
- 10.1002/admi.202000010
- Abstract
- Solar water splitting using semiconductor photocatalysts is considered to be one of the economical and significant techniques for hydrogen evolution. In this study, graphene-ZnxCd1-xS (ZCS) heterojunction is fabricated by hydrothermal method followed by simple photodeposition of ultrathin few layers of molybdenum sulfide (MoS2) nanosheets. The results show that compared with pristine ZCS and 1 wt% graphene mixed ZCS photocatalysts, the 1 wt% graphene and 1 wt% MoS2 photodeposited ZCS composited sample shows 39.5 mmol h(-1) g(-1) hydrogen production activity, which is 6.9 and 1.9 times significantly higher, respectively, with an apparent quantum yield of 53% at 420 nm visible light is recorded. The improved photocatalytic activity can be attributed to the formation of heterostructure interface between p-type MoS2 nanosheets with n-type ZCS host, which allows for the faster transfer of the photogenerated electrons and thus significantly promotes the separation of photogenerated charge carriers.
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