Issue 59, 2025

Enhanced electrocatalytic reduction of hexavalent chromium with reduced pH dependence via alternating potential polarization using a polyaniline–chitosan composite electrode

Abstract

The slow kinetics and strong pH dependence of hexavalent chromium, Cr(VI), electroreduction pose significant challenges for efficient remediation. Herein, an innovative alternating potential technique coupled with a polyaniline/chitosan composite electrode is developed to achieve rapid Cr(VI) removal (up to 17.8 h−1 at pH ∼ 2.0) while mitigating pH sensitivity (1.2 h−1 at pH ∼ 5.0).

Graphical abstract: Enhanced electrocatalytic reduction of hexavalent chromium with reduced pH dependence via alternating potential polarization using a polyaniline–chitosan composite electrode

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Article information

Article type
Communication
Submitted
28 May 2025
Accepted
13 Jun 2025
First published
13 Jun 2025

Chem. Commun., 2025,61, 11021-11024

Enhanced electrocatalytic reduction of hexavalent chromium with reduced pH dependence via alternating potential polarization using a polyaniline–chitosan composite electrode

H. Zheng, W. Xian, Y. Xiao, Y. Tang and R. Qiu, Chem. Commun., 2025, 61, 11021 DOI: 10.1039/D5CC03007B

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