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Published on: February 11, 2016
Ultrathin Ni(OH)2 nanosheets: a new strategy for cocatalyst design on CdS surfaces for photocatalytic hydrogen
Liqun Mao1,2, Qianqian Ba1, Xinjia Jia1
1Henan Engineering Research Center of Resource & Energy Recovery from Waste, Henan University Kaifeng 475004 PR China chanwee@henu.edu.cn +86 15737821275.
Abstract:
Ultrathin metal materials exhibit quantum size and surface effects that give rise to unique catalytic properties. In this paper, we report a facile liquid synthesis method for polyvinylpyrrolidone (PVP, K30) capped ultrathin Ni(OH)2 nanosheets with lamellar structure. The as-prepared ultrathin Ni(OH)2 nanosheets coupled with CdS nanorods exhibit excellent activity in hydrogen generation from water splitting under visible light. The H2 evolution rate of Ni(OH)2/CdS, 40.18 mmol h-1 gCat. -1 with a quantum efficiency of 66.1% at 420 nm, is ca. 1.5 times that of Pt/CdS with an optimal loading amount (1.25 wt%) under the same reaction conditions. Considering the cost of photocatalysts, the ultrathin Ni(OH)2 nanosheet coupled CdS photocatalyst may have a promising commercial application in photocatalytic hydrogen production.
