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A highly efficient ZnS/CdS@TiO2 photoelectrode for photogenerated cathodic protection of metals

被引：127
作者：
Lin, Ze-Quan
Lai, Yue-Kun
Hu, Rong-Gang
Li, Jing
Du, Rong-Gui
Lin, Chang-Jian [1 ]
机构：
[1] Xiamen Univ, State Key Lab Phys Chem Solid Surfaces, Xiamen 361005, Peoples R China
来源：
ELECTROCHIMICA ACTA | 2010年 / 55卷 / 28期
基金：
中国国家自然科学基金;
关键词：
TiO2 nanotube arrays; CdS; ZnS; Quantum dots; Photogenerated cathodic protection; BICOMPONENT WO3/TIO2 FILMS; TIO2; NANOTUBE-ARRAY; CORROSION PROTECTION; QUANTUM DOTS; COATINGS; NANOSTRUCTURES; SEMICONDUCTOR; ANTICORROSION; PERFORMANCE;
D O I：
10.1016/j.electacta.2010.08.017
中图分类号：
O646 [电化学、电解、磁化学];
学科分类号：
081704 ;
摘要：
Shell-core nanostructured ZnS/CdS quantum dots (QDs) were assembled uniformly on the surface of TiO2 nanotube arrays by sequence chemical bath deposition (CBD) of CdS and ZnS in alcohol solution system The morphology and chemical composition of the obtained composite thin films were characterized by scanning electron microscopy transmission electron microscopy and energy dispersive X-ray spectroscopy The effect of solvent and immersion cycles for the photoanode preparation on the photoelectrochemical activity and photogenerated cathodic protection property was investigated It is found that the nanostructured CdS QDs (20 cycles) coated on TiO2 nanotube arrays show a remarkably enhanced photoelectrochemical activity The coating of ZnS QD shells (5 cycles) is able to improve the stability of the CdS@TiO2 photoanode under white-light irradiation After the irradiation light is turned off the photogenerated cathodic protection of 403 stainless steel (403SS) can be remained for several hours (C) 2010 Elsevier Ltd All rights reserved
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收藏
页码：8717 / 8723
页数：7
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