Liquid phase deposition of tungsten doped TiO2 films for visible light photoelectrocatalytic degradation of dodecyl-benzenesulfonate
Liquid phase deposition of tungsten doped TiO2 films for visible light photoelectrocatalytic degradation of dodecyl-benzenesulfonate
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液相沉积钨掺杂 TiO2 薄膜可见光光电催化降解十二烷基苯磺酸盐
DOI：
10.1016/j.cej.2010.12.020
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发表时间：
2011-02
影响因子：
15.1
通讯作者：
Jingdong Zhang
中科院分区：
文献类型：
--
作者：
Jianyu Gong;Changzhu Yang;Wenhong Pu;Jingdong Zhang
采用液相沉积法制备了钨掺杂二氧化钛（W-TiO 2）薄膜。利用扫描电子显微镜（SEM）、X射线能谱（EDX）、X射线衍射（XRD）和X射线光电子能谱（XPS）对掺杂薄膜进行了表征。紫外-可见光谱表明，掺杂1-7%（at.%）后，薄膜的吸收波长扩展到可见光范围含量W.在可见光照射下，W-TiO 2薄膜表现出灵敏的光电流响应。在此基础上，对十二烷基苯磺酸盐（DBS）进行了可见光光催化降解实验，结果表明：5% W-TiO 2薄膜处理4 h后，降解率最高，达84.8%。在+1.0V阳极偏压和可见光的共同作用下，5% W-TiO 2薄膜对DBS的降解效率显著提高，90 min后达92%。考察了阳极偏压、初始pH值和DBS初始浓度对PEC降解DBS的影响。
The technique of liquid phase deposition (LPD) was developed for the preparation of tungsten doped TiO2(W-TiO2) films in this study. The doped films were characterized with scanning electron microscopy (SEM), energy dispersive X-ray (EDX), X-ray diffraction (XRD) and X-ray photoelectron spectroscopy (XPS). The UV–vis spectra showed that the films extended the absorption wavelength into visible light range after being doped with 1–7% (at.%) content of W. Under the illumination of visible light, the W-TiO2film showed a sensitive photocurrent response. Accordingly, the visible light photocatalytic degradation of dodecyl-benzenesulfonate (DBS) was tested and 5% W-TiO2film showed the highest degradation efficiency up to 84.8% after 4-h treatment. When +1.0V anodic bias potential and visible light were simultaneously applied, the degradation efficiency of DBS over the 5% W-TiO2film was significantly improved to 92% after 90min. The effects of anodic bias potential, initial pH value, and initial concentration of DBS on the PEC degradation of DBS were investigated.
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影响因子：
12.8
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影响因子：
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作者：
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