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 elec-trochemical oxidation wastewater treatment technique.In this study,a novel Ti/PbO2 anode was fabri-cated 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 electro-chemical 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 crys-tallographic 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 ap-propriate 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.

Dan Shao;Zekang Wang;Cuiping Zhang;Weijia Li;Hao Xu;Guoqiang Tan;Wei Yan

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;Department of Environmental Engineering,Xi'an Jiaotong University Xi'an,710049,China

中国化学快报（英文版）

[1]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].中国化学快报（英文版）,2022(03):1288-1292

Pb2+leakage,tallographic,Hairs

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