Stabilized PbO2 electrode prepared via crystal facet controlling for outstanding degradation of MePB

•The PbO2 electrode synthesized by surfactant induction has excellent stability.•The performance of the synthesized PbO2 electrode is improved by crystal facet control.•The high potential PbO2 electrode induced by crystal facet exhibits an outstanding degradation performance. PbO2 electrode prepared...

Full description

Saved in:
Bibliographic Details
Published in:Journal of electroanalytical chemistry (Lausanne, Switzerland) Switzerland), 2021-06, Vol.890, p.115246, Article 115246
Main Authors: Chen, Xiaodan, Sun, Cancan, Ma, Chenglong, Zhang, Hao, Cao, Limei, Yang, Ji
Format: Article
Language:English
Subjects:
Chemical synthesis
Crystal facet
Crystallization
Crystals
Dissolution
Electrochemical degradation
Electrodes
Lead oxides
Methylparaben
Morphology
Oxygen evolution reaction
Oxygen evolution reactions
PbO2 electrode
Performance degradation
Sodium dodecyl sulfate
Surfactants
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:•The PbO2 electrode synthesized by surfactant induction has excellent stability.•The performance of the synthesized PbO2 electrode is improved by crystal facet control.•The high potential PbO2 electrode induced by crystal facet exhibits an outstanding degradation performance. PbO2 electrode prepared by introducing surfactants sodium dodecyl sulfate (SDS) and Triton X-100 was 1.5 times more stable than the traditional PbO2 electrode. The lead ion dissolution was 16.6% of the conventional PbO2 electrode, which reduces the secondary pollution caused by lead ion dissolution. Besides, the synthesized electrode exhibited an outstanding degradation performance on the endocrine disruptor methylparaben (MePB). It can completely degrade 20 mg/L MePB within 1 h, and the COD removal can reach 91.4%. The excellent performance of the synthesized electrode was mainly due to the control of the electrode's crystal facet during the preparation of the PbO2 electrode. The crystal phase and morphology of the electrode were studied by X-ray diffraction (XRD) and scanning electron microscopy (SEM). It was found that the assistance of surfactants SDS and Triton X-100 promoted formation of the low-index facet β(101) and limited formation of the high-index facet β(211), that show higher overpotential for the oxygen evolution reaction (OER). Besides, PbO2 had better crystallization and the obvious pyramid structure.
ISSN:1572-6657
1873-2569
DOI:10.1016/j.jelechem.2021.115246