Citation: Dan Shao, Zekang Wang, Cuiping Zhang, Weijia Li, Hao Xu, Guoqiang Tan, Wei Yan. Embedding wasted hairs in Ti/PbO₂ anode for efficient and sustainable electrochemical oxidation of organic wastewater[J]. Chinese Chemical Letters, ;2022, 33(3): 1288-1292. doi: 10.1016/j.cclet.2021.07.061 shu

Embedding wasted hairs in Ti/PbO₂ anode for efficient and sustainable electrochemical oxidation of organic wastewater

Dan Shao ^{a, *,} ,
Zekang Wang ^a ,
Cuiping Zhang ^a ,
Weijia Li ^a ,
Hao Xu ^{b, *,} ,
Guoqiang Tan ^a ,
Wei Yan ^b

a.
School of Materials Science and Engineering, Shaanxi Key Laboratory of Green Preparation and Functionalization for Inorganic Materials, Shaanxi University of Science & Technology, Xi'an 710021, China
b.
Department of Environmental Engineering, Xi'an Jiaotong University Xi'an, 710049, China

shaodan@sust.edu.cn

xuhao@mail.xjtu.edu.cn

Received Date: 14 April 2021
Revised Date: 25 July 2021
Accepted Date: 27 July 2021
Available Online: 31 July 2021
Fund Project: the National Natural Science Foundation of China 21706153Natural Science Basic Research Plan in Shaanxi Province of China 2018JQ2066

Figures(3)

Despite of the hazardous risk of Pb²⁺ leakage, lead dioxide has been attributed as a quasi-ideal anode material with high oxygen evolution potential, excellent conductivity, good stability and low cost in electrochemical oxidation wastewater treatment technique. In this study, a novel Ti/PbO₂ anode was fabricated by embedding raw materials that are readily and cheaply available, i.e., hairs. The structure-activity relationship of the new electrode was firstly revealed by material and electrochemical characterizations. Then different levels of pollutants (azo dye, phenol and maleic acid) were used to investigate the electrochemical oxidation performance of the new electrode. Finally, the accelerated electrode lifetime and Pb²⁺ leakage tests were carried out. Results showed that the embedded hairs changed the preferential crystallographic orientation of PbO₂ and decreased the grain size. Hairs introduced additional roughness and active sites, and decreased the electrode impedance, especially under 5 mg/cm² of embedding amount. The removal efficiencies of different target pollutants were enhanced more or less by embedding appropriate amount of hairs, depending on the current density, but loading excessive hairs had a negative effect. The accumulation of intermediate products during phenol degradation was also changed by the hairs. The new electrode could undergo ~550 h of harsh electrolysis. It is also relieved that the Pb²⁺ leakage was found to be suppressed during this long-term electrolysis process.
- Wastewater treatment,
- Lead dioxide,
- Fiber,
- Composite,
- Intermediate product
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沈阳化工大学材料科学与工程学院沈阳 110142

Embedding wasted hairs in Ti/PbO2 anode for efficient and sustainable electrochemical oxidation of organic wastewater

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通讯作者: 陈斌, bchen63@163.com

Embedding wasted hairs in Ti/PbO₂ anode for efficient and sustainable electrochemical oxidation of organic wastewater