电极
电化学
阳极
材料科学
降级(电信)
可逆氢电极
化学工程
无机化学
工作电极
化学
电信
物理化学
计算机科学
工程类
作者
Zhenyu Hu,Chao Guo,Peng Wang,Rui Guo,Xuanwen Liu,Ye Tian
出处
期刊:Chemosphere
[Elsevier]
日期:2022-10-01
卷期号:305: 135447-135447
被引量:20
标识
DOI:10.1016/j.chemosphere.2022.135447
摘要
A significant number of pollutants in wastewater can be electrocatalytically oxidized by SnO2-Sb, a relatively inactive electrode. However, the arduous process of environmental remediation due to poor electrochemical performance and short service life of the traditional Ti/SnO2-Sb electrode. In this work the SnO2 electrode with a micron-sized sphere structure was prepared by in-situ hydrothermal. The results of the study that the electrode (Pb-10%) synthesized from the precursor solution in which the Pb:Sn molar ratio is 10% exhibits excellent electrooxidation properties. Impressiveing, the Pb-10% electrode displayed the small charge transfer resistance (10.71 Ω) and the high oxygen evolution potential (2.26 V vs. SCE). Thus, the electrochemical degradation experiment demonstrates that 100 mg L-1 MB was degraded by Pb-10% electrode under the condition of initial pH = 5, and the decolorization rate reached 94.6%. Moreover, the influence of different parameters such as Pb doping amount, initial pH value of solution, initial concentration of MB and inorganic ions on degradation efficiency were also explored, in turn the practical application of electrodes in the field of purifying water resources is optimized. It is worth noting that the service life of the optimized electrode (100 mA cm-2, 0.5 M H2SO4, 90 h) is about 12 times longer than that of the bare electrode (Sn-Sb). Therefore, the high-performance Ti/SnO2-Sb electrode prepared in this work possesses vast application prospects in the electrocatalytic oxidation.
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