An Efficient Noble-Metal-Free Photocatalyst for Visible-Light-Driven H2 Evolution: Cu/Ni-Codoped Cd0.5Zn0.5S Nanoplates

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• 作者：Yanjie Hao ; Shi-Zhao Kang ; Xing Liu ; Xiangqing Li ; Lixia Qin ; Jin Mu
• 刊名：ACS Sustainable Chemistry & Engineering
• 出版年：2017
• 出版时间：January 3, 2017
• 年：2017
• 卷：5
• 期：1
• 页码：1165-1172
• 全文大小：444K
• ISSN：2168-0485

文摘

In the present work, Cu/Ni-codoped Cdb>05b>Znb>0.5b>S nanoplates were synthesized through a one-step hydrothermal process. Meanwhile, photocatalytic Hb>2b> evolution from water over the as-prepared Cu/Ni-codoped Cdb>0.5b>Znb>0.5b>S nanoplates was investigated under visible irradiation using Nab>2b>S and Nab>2b>SOb>3b> as sacrificial reagents. The results indicate that the as-prepared Cu/Ni-codoped Cdb>0.5b>Znb>0.5b>S nanoplates are an efficient photocatalyst for visible-light-driven Hb>2b> evolution from water, and there exists obvious synergy effect between Cu and Ni dopants. The photocatalytic activity of the Cdb>0.5b>Znb>0.5b>S nanoplates can be significantly enhanced due to the introduction of Cu and Ni. Under optimal conditions, the Hb>2b> evolution rate over the Cu/Ni-codoped Cdb>0.5b>Znb>0.5b>S nanoplates is up to 58.33 mmol h^–1 g^–1, which is 3.5 times higher than that over the pure Cdb>0.5b>Znb>0.5b>S nanoplates. Finally, the photocatalytic mechanism was preliminarily discussed.