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Constructing Film Photocatalyst with Abundant Interfaces between CdS and Ni 3 S 2 Nanosheets for Efficient Photocatalytic Hydrogen Production
Author(s) -
Chao Yuguang,
Zheng Jianfeng,
Zhang Haixia,
Ma Yuanyuan,
Li Feng,
Tan Yisheng,
Zhu Zhenping
Publication year - 2018
Publication title -
energy technology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.91
H-Index - 44
eISSN - 2194-4296
pISSN - 2194-4288
DOI - 10.1002/ente.201800180
Subject(s) - photocatalysis , hydrogen production , catalysis , materials science , water splitting , nickel , nanotechnology , chemical engineering , photocatalytic water splitting , visible spectrum , chemistry , optoelectronics , metallurgy , engineering , biochemistry
Abstract Large scale and sustainable solar hydrogen evolution through photocatalytic water splitting requires highly active and stable earth‐abundant co‐catalysts to reduce water to H 2 . There are still a series of key challenges existed for the practical application, although many efforts have been made, such as low efficiency, difficult recovery of powder catalyst and so on. In this work, we constructed a film‐like photocatalyst CdS−Ni 3 S 2 /NF with abundant interfaces or junctions for the first time by integrating the CdS and Ni 3 S 2 nanosheets supported on nickel foam (NF). The resultant photocatalyst exhibits a photocatalytic H 2 production rate of 100.50 mmol g CdS −1 h −1 , which is about 6.8 times that for CdS‐2wt%Pt/NF (14.86 mmol g −1 h −1 ). And the rate of H 2 evolution can be expressed as 589.86 μmol cm −2 day −1 , which means 132 L H 2 could be generated by using 1 m 2 CdS−Ni 3 S 2 /NF photocatalyst under visible light irradiation in 12 h. The enhanced photocatalytic activity was attributed to the rich interfaces or junctions between CdS and Ni 3 S 2 nanosheets, and excellent kinetic of Ni 3 S 2 nanosheets for reducing water to H 2 . This work provides a new avenue for developing high performance photocatalyst system for practically renewable H 2 energy generation and environmental remediation.