Photoelectrocatalytic degradation of organic contaminants at Bi2O3/TiO2 nanotube array electrode
Photoelectrocatalytic degradation of organic contaminants at Bi2O3/TiO2 nanotube array electrode
复制标题
Bi2O3/TiO2纳米管阵列电极光电催化降解有机污染物
DOI：
10.1016/j.apsusc.2010.12.099
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发表时间：
2011-03
影响因子：
6.7
通讯作者：
Qu, Jiuhui
中科院分区：
文献类型：
--
作者：
Zhao, Xu;Liu, Huijuan;Qu, Jiuhui
本研究采用电化学阳极法制备了tio2纳米管阵列。然后将bi2o3纳米颗粒从无定形络合物前驱体中通过浸涂法沉积到tio2纳米管阵列上。通过x射线衍射分析对晶体结构进行了表征。通过电子扫描显微镜观察了它们的表面结构。所制备的复合阵列电极在可见光照射下对降解有机污染物表现出较高的光电催化活性。在紫外光照射下也表现出较高的光电催化活性。通过电化学和降解动力学分析，探讨了催化机理。推测P (Bi2O3) -N （TiO2）结的形成是为了提高催化活性。最后证实了电极材料的稳定性。
In the current work, TiO2nanotube array was prepared via electrochemical anode method. Then the Bi2O3nanoparticles were deposited onto the TiO2nanotube array via dip-coating method from an amorphous complex precursor. The crystal structures were characterized via X-ray diffraction analysis. Their surface textures were observed via electron-scanning microscope. The prepared composite array electrode exhibited high photoelectrocatalytic activities towards degrading organic contaminants under visible light irradiation. High photoelectrocatalytic activities were also exhibited under UV light irradiation. The catalytic mechanism was discussed based on the analysis of electrochemical and degradation kinetics results. It is suggested a P (Bi2O3)–N (TiO2) junction was formed to increase the catalytic activates. The stability of the electrode materials was confirmed finally.
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通讯作者：
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