College of Chemistry and Chemical Engineering, Huazhong University of Science and Technology, Luoyu Road 1037, Wuhan 430074, PR China.
J Hazard Mater. 2010 Mar 15;175(1-3):96-103. doi: 10.1016/j.jhazmat.2009.09.037. Epub 2009 Sep 16.
TiO(2) film deposited on glassy carbon electrode surface was prepared via the liquid phase deposition (LPD). The deposited TiO(2) film before and after calcination was characterized with scanning electron microscopy (SEM) and X-ray diffraction (XRD). Based on the high photoelectrochemical activity of calcined LPD TiO(2) film, the photoelectrocatalytic degradation of benzotriazole (BTA) was investigated. Compared with the electrochemical oxidation process, direct photolysis or photocatalysis for treatment of BTA, a synergetic photoelectrocatalytic degradation effect was observed using the LPD TiO(2) film-coated electrode. Various factors influencing the photoelectrocatalytic degradation of BTA such as film calcination, applied bias potential, pH value, supporting electrolyte concentration and initial concentration of BTA were investigated. The COD removal for BTA solution was analyzed to evaluate the mineralization of the PEC process. Based on the degradation experimental results, a possible photoelectrocatalytic degradation mechanism for BTA was proposed.
在玻璃碳电极表面通过液相沉积（LPD）制备 TiO(2)薄膜。沉积前后的 TiO(2)薄膜用扫描电子显微镜（SEM）和 X 射线衍射（XRD）进行了表征。基于煅烧 LPD TiO(2)薄膜的高光电化学活性，研究了苯并三唑（BTA）的光电催化降解。与电化学氧化过程相比，直接光解或光催化处理 BTA 时，使用 LPD TiO(2)薄膜涂覆电极观察到协同光电催化降解效果。研究了影响 BTA 光电催化降解的各种因素，如薄膜煅烧、施加偏压、pH 值、支持电解质浓度和 BTA 的初始浓度。对 BTA 溶液的 COD 去除进行了分析，以评估 PEC 过程的矿化程度。根据降解实验结果，提出了 BTA 的可能光电催化降解机理。
