Reaction pathway and mechanism of the degradation of acid orange Ⅱ by Sn-Ce-Sb/γ-Al2O3 particle electrodes
QIAO Qi-cheng1,2, LI Ya1,2, JIN Jie-rong1,2, SHI Jian3, ZHAO Qin3
1. School of Environment and Biological Engineering, Nantong College of Science and Technology. Nantong 226007, China; 2. Nantong Key Laboratory of Solid Waste Reuse, Nantong 226007, China; 3. School of Chemical Engineering and Technology, Nantong University, Nantong 226007, China
Abstract：Nd modified PbO2 anode and Sn-Ce-Sb/γ-Al2O3 particle electrode,which were made in our laboratory,were used to prepare two-dimensional electrode,three-dimensional γ-Al2O3 particle electrode and three-dimensional Sn-Ce-Sb/γ-Al2O3 particle electrode for the degradation of acid orange Ⅱ (AOⅡ).To identify the reaction intermediate products,UV-vis,FTIR and GC-MS were applied.On the basis of the AOⅡ degradation results and kinetics analysis,in the three-dimensional Sn-Ce-Sb/γ-Al2O3 particle electrode reactor,TOC removal rate was 1.95 and 1.70 times higher than using two-dimensional electrode and three-dimensional γ-Al2O3 particle electrode,and energy consumption had reduced by 41% and 25%,respectively.According to the analysis of the main reaction intermediates,a possible degradation pathway was proposed for AOⅡ degradation by Sn-Ce-Sb/γ-Al2O3 particle electrode.And finally,a reaction mechanism was also proposed based on all the experimental results.
乔启成, 李亚, 金洁蓉, 石健, 赵勤. Sn-Ce-Sb/γ-Al2O3粒子电极体系降解AOⅡ的历程与机理[J]. 中国环境科学, 2017, 37(7): 2607-2614.
QIAO Qi-cheng, LI Ya, JIN Jie-rong, SHI Jian, ZHAO Qin. Reaction pathway and mechanism of the degradation of acid orange Ⅱ by Sn-Ce-Sb/γ-Al2O3 particle electrodes. CHINA ENVIRONMENTAL SCIENCECE, 2017, 37(7): 2607-2614.
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