Thermal decomposition method was employed to prepare a Ti/SnO2-RuO2 electrode, on which electrocatalytic degradation of bromocresol green (BCG) was investigated in detail. Scanning electron microscopy, an X-ray diffraction analyzer and an X-ray fluorescence spectrometer were adopted to characterize the morphology, crystal structure and element analysis of the as-prepared Ti/SnO2-RuO2 electrode. It was indicated that the Ti/SnO2-RuO2 electrode had a ‘cracked-mud’ structure and exhibited a superior specific surface area. The removal efficiency of BCG on the Ti/SnO2-RuO2 electrode was determined in terms of chemical oxygen demand and ultraviolet-visible absorption spectrometry. The results of the batch experiment indicated that the removal efficiency of BCG was influenced by the following factors in descending order: initial pH0, reaction temperature, current density and electrolysis time. The removal efficiency of BCG reached up to 91% at the optimal experiment conditions (initial concentration of 100 mg L−1, initial pH0 7, reaction temperature of 30 °C, current density of 12 mA cm−2 and electrolysis time of 150 min). As a result, it was concluded that BCG wastewater was efficiently removed by electrochemical oxidation on the Ti/SnO2-RuO2 electrode.
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Research Article|
October 27 2016
Electrocatalytic degradation of bromocresol green wastewater on Ti/SnO2-RuO2 electrode
Hongmei Bai;
Hongmei Bai
1State Key Laboratory Cultivation Base for Nonmetal Composites and Functional Materials, School of Materials Science and Engineering, Southwest University of Science and Technology, Mianyang 621010, China
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Ping He;
1State Key Laboratory Cultivation Base for Nonmetal Composites and Functional Materials, School of Materials Science and Engineering, Southwest University of Science and Technology, Mianyang 621010, China
E-mail: [email protected]
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Jingchao Chen;
Jingchao Chen
1State Key Laboratory Cultivation Base for Nonmetal Composites and Functional Materials, School of Materials Science and Engineering, Southwest University of Science and Technology, Mianyang 621010, China
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Kaili Liu;
Kaili Liu
1State Key Laboratory Cultivation Base for Nonmetal Composites and Functional Materials, School of Materials Science and Engineering, Southwest University of Science and Technology, Mianyang 621010, China
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Hong Lei;
Hong Lei
2Engineering Research Center of Biomass Materials, Ministry of Education, Southwest University of Science and Technology, Mianyang 621010, China
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Xiaojuan Zhang;
Xiaojuan Zhang
1State Key Laboratory Cultivation Base for Nonmetal Composites and Functional Materials, School of Materials Science and Engineering, Southwest University of Science and Technology, Mianyang 621010, China
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Faqin Dong;
Faqin Dong
3Key Laboratory of Solid Waste Treatment and Resource Recycle of Ministry of Education, Southwest University of Science and Technology, Mianyang 621010, China
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Hong Li
Hong Li
4National Research Centre for Municipal Wastewater Treatment and Reuse, Mianyang 621010, China
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Water Sci Technol (2017) 75 (1): 220–227.
Article history
Received:
June 30 2016
Accepted:
October 12 2016
Citation
Hongmei Bai, Ping He, Jingchao Chen, Kaili Liu, Hong Lei, Xiaojuan Zhang, Faqin Dong, Hong Li; Electrocatalytic degradation of bromocresol green wastewater on Ti/SnO2-RuO2 electrode. Water Sci Technol 9 January 2017; 75 (1): 220–227. doi: https://doi.org/10.2166/wst.2016.509
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