Enhancement of Photocatalytic H2 Evolution on CdS by Loading MoS2 as Cocatalyst under Visible Light Irradiation

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• 作者：Xu Zong ; Hongjian Yan ; Guopeng Wu ; Guijun Ma ; Fuyu Wen ; Lu Wang ; Can Li
• 刊名：Journal of the American Chemical Society
• 出版年：2008
• 出版时间：June 11, 2008
• 年：2008
• 卷：130
• 期：23
• 页码：7176 - 7177
• 全文大小：267K
• 年卷期：v.130,no.23(June 11, 2008)
• ISSN：1520-5126

文摘

This communication presents our recent results that the activity of photocatalytic H₂ production can be significantly enhanced when a small amount of MoS₂ is loaded on CdS as cocatalyst. The MoS₂/CdS catalysts show high rate of H₂ evolution from photocatalytic re-forming of lactic acid under visible light irradiation. The rate of H₂ evolution on CdS is increased by up to 36 times when loaded with only 0.2 wt % of MoS₂, and the activity of MoS₂/CdS is even higher than those of the CdS photocatalysts loaded with different noble metals, such as Pt, Ru, Rh, Pd, and Au. The junction formed between MoS₂ and CdS and the excellent H₂ activation property of MoS₂ are supposed to be responsible for the enhanced photocatalytic activity of MoS₂/CdS.