期刊
ACS APPLIED MATERIALS & INTERFACES
卷 6, 期 15, 页码 12353-12362出版社
AMER CHEMICAL SOC
DOI: 10.1021/am502151m
关键词
SILAR; photoelectrochemical; quantum dots; macroporous ZnO nanosheet; photocatalytic degradation
资金
- National Basic Research Program of China [2009CB421601]
- National Science Foundation of China [21175038, 21235002]
- Hunan Provincial Innovation Foundation for Postgraduate
A novel photoelectrode based on ZnS/CdTe/Mn-CdS/ZnS-sensitized three-dimensional macroporous ZnO nanosheet (NS) has been prepared by electrodeposition and successive ion layer adsorption and reaction (SILAR) method. The photoelectrode performances were significantly improved through the coupling of the core/shell CdTe/Mn-CdS quantum dots (QDs) with ZnO NS, and the introduction of the ZnS layer as a potential barrier. The photocurrent density systematically increases from ZnO NS (0.45 mA/cm(2)), CdTe/Mn-CdS/ZnO NS (4.98 mA/cm(2)), to ZnS/CdTe/Mn-CdS/ZnS/ZnO (6.23 mA/cm(2)) under the irradiation of AM 1.5G simulated sunlight. More important, the ZnS/CdTe/Mn-CdS/ZnS-sensitized ZnO NS photoelectrode provides a remarkable photoelectrochernical cell efficiency of 4.20% at -0.39 V vs Ag/AgCl.
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