MoS2 Nanosheet-Modified CuInS2 Photocatalyst for Visible-Light-Driven Hydrogen Production from Water

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• 作者：Dr. Yong-Jun Yuan ; Prof. Dr. Da-Qin Chen ; Dr. Yan-Wei Huang ; Dr. Zhen-Tao Yu ; Dr. Jia-Song Zhong ; Ting-Ting Chen ; Dr. Wen-Guang Tu ; Zhong-Jie Guan ; Dr. Da-Peng Cao and Prof. Dr. Zhi-Gang Zou
• 刊名：ChemSusChem
• 出版年：2016
• 出版时间：May 10, 2016
• 年：2016
• 卷：9
• 期：9
• 页码：1003-1009
• 全文大小：1436K
• ISSN：1864-564X

文摘

Exploiting photocatalysts respond to visible light is of huge challenge for photocatalytic H₂ production. Here, we synthesize a new composite material consisting of few-layer MoS₂ nanosheets grown on CuInS₂ surface as an efficient photocatalyst for solar H₂ generation. The photocatalytic results demonstrate that the 3 wt % MoS₂/CuInS₂ photocatalyst exhibits the highest H₂ generation rate of 316 μmol h⁻¹ g⁻¹ under visible light irradiation, which is almost 28 times higher than that of CuInS₂. Importantly, the MoS₂/CuInS₂ photocatalyst shows a much higher photocatalytic activity than that of Pt-loaded CuInS₂ photocatalyst. The enhanced photocatalytic activities of MoS₂/CuInS₂ photocatalysts can be attributed to the improved charge separation at the interface of MoS₂ and CuInS_2, which is demonstrated by the significant enhancement of photocurrent responses in MoS₂/CuInS₂ photoelectrodes. This work presents a noble-metal-free photocatalyst that responds to visible light for solar H₂ generation.