Engineering Zn1-xCdxS/CdS Heterostructures with Enhanced Photocatalytic Activity
Engineering Zn1-xCdxS/CdS Heterostructures with Enhanced Photocatalytic Activity
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具有增强光催化活性的 Zn1-xCdxS/CdS 异质结构工程
DOI：
10.1021/acsami.6b02765
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发表时间：
2016-06-15
影响因子：
9.5
通讯作者：
Lan, Ya-Qian
中科院分区：
文献类型：
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作者：
Li, Kui;Chen, Rong;Lan, Ya-Qian
以有机胺为模板剂，采用原位合成法制备了各种多孔Zn 1-xCd xS/CdS异质结构。由于Cd ~（2+）的半径大于Zn ~（2+）的半径，在Zn ~（1-x）Cd_xS网络中形成了均匀分布的CdS量子点。由乙二胺衍生的具有低Cd含量（10at%）的Zn 1-xCd xS/CdS异质结构在可见光（λ ≥ 420 nm）下显示出非常高的H-2-释放速率，为667.5 μ mol/h/5 mg光催化剂，在420 nm处的表观量子效率为50.1%/5 mg。此外，该Zn 1-xCdxS/CdS异质结构光催化剂在100 h以上也表现出优异的光催化稳定性。
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 H-2-evolution rate of 667.5 mu mol/h per 5 mg photocatalyst under visible light (lambda >= 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.