TY - JOUR
T1 - Highly efficient visible"light"driven photocatalytic hydrogen production using robust noble"metal"free Zn0.5Cd0.5S@graphene composites decorated with MoS2 nanosheets
AU - Madhusudan, Puttaswamy
AU - Shi, Run
AU - Chandrashekar, Bananakere Nanjegowda
AU - Xiang, Shengling
AU - Smitha, Ankanahalli Shankaregowda
AU - Wang, Weijun
AU - Zhang, Haichao
AU - Zhang, Xian
AU - Amini, Abbas
AU - Cheng, Chun
N1 - Publisher Copyright:
© 2020 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim
PY - 2020/6/1
Y1 - 2020/6/1
N2 - 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.
AB - 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.
KW - graphene
KW - hydrogen
KW - nanostructures
KW - photocatalysis
UR - http://hdl.handle.net/1959.7/uws:56018
U2 - 10.1002/admi.202000010
DO - 10.1002/admi.202000010
M3 - Article
SN - 2196-7350
VL - 7
JO - Advanced Materials Interfaces
JF - Advanced Materials Interfaces
IS - 12
M1 - 2000010
ER -
