Engineering Zn1–xCdxS/CdS Heterostructures with Enhanced Photocatalytic Activity

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• 作者：Kui Li ; Rong Chen ; Shun-Li Li ; Shuai-Lei Xie ; Long-Zhang Dong ; Zhen-Hui Kang ; Jian-Chun Bao ; Ya-Qian Lan
• 刊名：ACS Applied Materials & Interfaces
• 出版年：2016
• 出版时间：June 15, 2016
• 年：2016
• 卷：8
• 期：23
• 页码：14535-14541
• 全文大小：478K
• 年卷期：0
• ISSN：1944-8252

文摘

Various porous Zn_1–xCd_xS/CdS heteorostructures were achieved via in situ synthesis method with organic amines as the templates. Because of the larger radius of Cd²⁺ than that of Zn²⁺, CdS quantum dots are formed and distributed uniformly in the network of Zn_1–xCd_xS. The Zn_1–xCd_xS/CdS heterostructure with small Cd content (10 at%) derived from ethylenediamine shows very high H₂-evolution rate of 667.5 μmol/h per 5 mg photocatalyst under visible light (λ ≥ 420 nm) with an apparent quantum efficiency of 50.1% per 5 mg at 420 nm. Moreover, this Zn_1–xCd_xS/CdS heterostructure photocatalyst also shows an excellent photocatalytic stability over 100 h.