TY - JOUR
T1 - Highly promoted hydrogen production enabled by interfacial P–N chemical bonds in copper phosphosulfide Z-scheme composite
AU - Zhang, Xiandi
AU - Yan, Jia
AU - Lee, Lawrence Yoon Suk
N1 - Funding Information:
X. Zhang and J. Yan contributed equally to this work. We gratefully acknowledge the financial supports from the Innovation and Technology Commission of Hong Kong and The Hong Kong Polytechnic University ( 1-BE0Y ). J. Yan acknowledges the Postdoctoral Fellowships Scheme from the Hong Kong Polytechnic University ( 1-YW3J ).
Publisher Copyright:
© 2020 Elsevier B.V.
Copyright:
Copyright 2020 Elsevier B.V., All rights reserved.
PY - 2021/4
Y1 - 2021/4
N2 - Transition metal phosphosulfides (TMPSs) have shown great potential as efficient catalysts toward hydrogen evolution reaction (HER). To further understand and promote the catalytic activity at the phosphosulfide (PS) structures, the multifunctional role of TMPS needs to be explored. Herein, we report copper phosphosulfide (Cu3P|S) coupled with graphene-like C3N4 (GL-C3N4) as an excellent HER photocatalyst with a hydrogen production rate of 8.78 mmol g−1 h−1 (20.22 mmol g−1 h−1 with 0.5 wt.% Pt). Systematic investigations on the interaction between Cu3P|S and GL-C3N4 unveil that such impressive photocatalytic activity arises from the interfacial P–N chemical bond that constructs a Z-scheme heterostructure. Time-resolved photoluminescence analysis indicates a considerably suppressed recombination rate of photoexcited charge carriers at the interface, which facilitates electron transfer and enhances the reducibility of electrons in the conduction band of Cu3P|S. This work provides new design strategies for employing TMPSs as photocatalysts for highly efficient HER and other photoreduction reactions.
AB - Transition metal phosphosulfides (TMPSs) have shown great potential as efficient catalysts toward hydrogen evolution reaction (HER). To further understand and promote the catalytic activity at the phosphosulfide (PS) structures, the multifunctional role of TMPS needs to be explored. Herein, we report copper phosphosulfide (Cu3P|S) coupled with graphene-like C3N4 (GL-C3N4) as an excellent HER photocatalyst with a hydrogen production rate of 8.78 mmol g−1 h−1 (20.22 mmol g−1 h−1 with 0.5 wt.% Pt). Systematic investigations on the interaction between Cu3P|S and GL-C3N4 unveil that such impressive photocatalytic activity arises from the interfacial P–N chemical bond that constructs a Z-scheme heterostructure. Time-resolved photoluminescence analysis indicates a considerably suppressed recombination rate of photoexcited charge carriers at the interface, which facilitates electron transfer and enhances the reducibility of electrons in the conduction band of Cu3P|S. This work provides new design strategies for employing TMPSs as photocatalysts for highly efficient HER and other photoreduction reactions.
KW - Copper phosphosulfide
KW - Hydrogen evolution reaction
KW - Interfacial charge transfer
KW - Photocatalysis
KW - P–N bond
UR - http://www.scopus.com/inward/record.url?scp=85093961897&partnerID=8YFLogxK
U2 - 10.1016/j.apcatb.2020.119624
DO - 10.1016/j.apcatb.2020.119624
M3 - Journal article
AN - SCOPUS:85093961897
SN - 0926-3373
VL - 283
JO - Applied Catalysis B: Environmental
JF - Applied Catalysis B: Environmental
M1 - 119624
ER -
