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Engineering Zn1–xCdxS/CdS Heterostructures with Enhanced Photocatalytic Activity

Author:
Li, Kui, Chen, Rong, Li, Shun-Li, Xie, Shuai-Lei, Dong, Long-Zhang, Kang, Zhen-Hui, Bao, Jian-Chun, Lan, Ya-Qian
Source:
ACS applied materials 2016 v.8 no.23 pp. 14535-14541
ISSN:
1944-8252
Subject:
amines, cadmium, engineering, hydrogen, photocatalysis, photocatalysts, zinc
Abstract:
Various porous Zn₁–ₓCdₓS/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 Zn₁–ₓCdₓS. The Zn₁–ₓCdₓS/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 Zn₁–ₓCdₓS/CdS heterostructure photocatalyst also shows an excellent photocatalytic stability over 100 h.
Agid:
5289551