Construction of GO/Pr/PbO2 ternary electrode for highly efficient degradation of organic pollutants

被引：1
作者：
Henan Key Laboratory of Coal Green Conversion, International Jiont Laboratory of Coal Clean Utilization, Collaborative Innovation Center of Coal Work Safety and Clean High Efficiency Utilization, and College of Chemistry and Chemical Engineering, Henan Polytechnic University, Jiaozuo [1 ]
454003, China
不详 [2 ]
324000, China
不详 [3 ]
机构：
[1] Henan Key Laboratory of Coal Green Conversion, International Jiont Laboratory of Coal Clean Utilization, Collaborative Innovation Center of Coal Work Safety and Clean High Efficiency Utilization, and College of Chemistry and Chemical Engineering, Henan Pol
[2] Institute of Zhejiang University - Quzhou, Quzhou
[3] Department of Chemistry, Faculty of Natural and Applied Sciences, Lead City University, Ibadan
来源：
Chemosphere | 2024年
关键词：
DFT; Electrocatalytic degradation; GO/Pr/PbO[!sub]2[!/sub; Organic pollutant; Ternary electrode;
D O I：
10.1016/j.chemosphere.2024.143803
中图分类号：
学科分类号：
摘要：
A series of GO/Pr/PbO2 electrodes were prepared by electrodeposition method, and used for the electrocatalytic degradation of methylene blue (MB) in an electrolytic cell. The characteristic properties of the as-prepared electrodes were systematically characterized via different techniques such as XRD, SEM, and XPS. Interestingly, the ternary electrode was found to possess higher catalytic performance compared with PbO2 and Pr/PbO2 electrodes, suggested that synergistic catalytic activity existed between ternary electrode. Moreover, 94.64% of MB degradation was detected over the ternary electrode under the optimized conditions (50 mg/L, pH = 3, 180 min). Besides, when rhodamine B, methyl orange, acid red and tetracycline were respectively used as the model pollutants, with no less than 60% degradation being found. Additionally, hydroxyl radical (•OH) as reactive oxygen species was confirmed according to the free radical capture experiment, whereas, a proper degradation pathway was proposed. According to the DFT calculations, the electrons of the organic pollutants can be transferred to the anode via C–O-Pr bond and Pr-O-Pb bond between the dual interfaces. © 2024 Elsevier Ltd
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