Preparation of La2O3 doped β-PbO2 electrode and its application in electrochemical degradation of organic

ZHANG Tieming; WANG Xunhua; ZHAO Fengming; TONG Shaoping; MA Chun’an

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Preparation of La₂O₃doped β-PbO₂ electrode and its application in electrochemical degradation of organic

更新时间：2025-12-10

- Preparation of La₂O₃doped β-PbO₂ electrode and its application in electrochemical degradation of organic
- CIESC Journal Issue S1, Pages: 64-69(2008)
- 作者机构：
  
  1. 浙江工业大学化学工程与材料学院
  2. 绿色化学合成技术国家重点实验室培育基地
- 作者简介：
- 基金信息：
- DOI：
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- Online First：30 June 2008，
  
  Published：30 June 2008
- 稿件说明：
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ZHANG Tieming, WANG Xunhua, ZHAO Fengming, et al. Preparation of La₂O₃doped β-PbO₂ electrode and its application in electrochemical degradation of organic[J]. CIESC Journal, 2008, (S1): 64-69.
DOI：

ZHANG Tieming, WANG Xunhua, ZHAO Fengming, et al. Preparation of La₂O₃doped β-PbO₂ electrode and its application in electrochemical degradation of organic[J]. CIESC Journal, 2008, (S1): 64-69. DOI：

摘要

利用电沉积法制备了氧化镧掺杂的二氧化铅电极（La2O3-β-PbO2）。XRD和SEM显示La2O3颗粒均匀地嵌在二氧化铅镀层中，电化学测试表明La2O3掺杂显著提高了二氧化铅电极的析氧过电位。利用La2O3-β-PbO2电极降解了水中的对氯苯酚，与常规β-PbO2电极相比，La2O3-β-PbO2电极不但有较高的COD去除率，而且具有较高的电流效率。相同条件下电解480 min后，La2O3-β-PbO2电极对体系COD的去除率和电流效率分别为61.76%和3.68%;而β-PbO2电极分别仅有30.58%和1.01%，显示了较好的应用前景。

Abstract

La2O3 doped β-PbO2 electrode（La2O3 -β-PbO2）was prepared by electrodeposition and further characterized by X-ray diffraction（XRD）and scanning electron microscpy（SEM）It was observed that La2O3particles could be incorporated in the deposit uniformlyThe result of electrochemical test demonstrates that the way of La2O3 doping can significantly increase oxygen evolution overpotential of lead dioxideCompared with conventional β-PbO2，La2O3-β-PbO2 not only has fast COD removal rate，but also has high instantaneous current efficiency（ICE）in the process of degrading 4-chlorophenolFor example，the COD removal rate and ICE for La2O3-β-PbO2 reached 61.76% and 3.68% after 480 min electrolysis，respectively，while 30.58% and 1.01% for β-PbO2 under the same conditionsTherefore，this electrode indicated good prospects of application.

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