CC/CoNi-LDH anode doped with Ce3+ achieving enhanced electrocatalytic oxidation of ciprofloxacin

doi:10.1016/j.cjche.2025.01.011

Chinese Journal of Chemical Engineering ›› 2025, Vol. 80 ›› Issue (4): 79-88.DOI: 10.1016/j.cjche.2025.01.011

CC/CoNi-LDH anode doped with Ce³⁺ achieving enhanced electrocatalytic oxidation of ciprofloxacin

Xiao Wei¹, Xuan Fang¹, Shuming Ma¹, Huaqiang He², Zhixin Wu¹, Silin Li¹, Shihao Zhang¹, Pei Nian¹, Wenlan Ji¹, Yibin Wei¹

1 State Key Laboratory of High-efficiency Utilization of Coal and Green Chemical Engineering, School of Chemistry and Chemical Engineering, Ningxia University, Yinchuan 750021, China;
2 Research Institute of Natural Gas Technology, PetroChina Southwest Oil & Gasfield Company, Chengdu 610299, China

Received:2024-10-08 Revised:2025-01-11 Accepted:2025-01-23 Online:2025-03-08 Published:2025-04-28
Contact: Wenlan Ji,E-mail:wenlan.ji@nxu.edu.cn;Yibin Wei,E-mail:yibin.wei@nxu.edu.cn
Supported by:
The authors sincerely acknowledge the funds granted by the Ningxia Natural Science Foundation (2023AAC05003, 2024AAC03048, 2024AAC03051), the National Natural Science Foundation of China (22108130, 22368039), the Ningxia Key Research & Development Program (2023BDE03001) and the Ningxia Overseas Returnee Innovation and Entrepreneurship Project for the financial support.

CC/CoNi-LDH anode doped with Ce³⁺ achieving enhanced electrocatalytic oxidation of ciprofloxacin

Xiao Wei¹, Xuan Fang¹, Shuming Ma¹, Huaqiang He², Zhixin Wu¹, Silin Li¹, Shihao Zhang¹, Pei Nian¹, Wenlan Ji¹, Yibin Wei¹

1 State Key Laboratory of High-efficiency Utilization of Coal and Green Chemical Engineering, School of Chemistry and Chemical Engineering, Ningxia University, Yinchuan 750021, China;
2 Research Institute of Natural Gas Technology, PetroChina Southwest Oil & Gasfield Company, Chengdu 610299, China

通讯作者: Wenlan Ji,E-mail:wenlan.ji@nxu.edu.cn;Yibin Wei,E-mail:yibin.wei@nxu.edu.cn
基金资助:
The authors sincerely acknowledge the funds granted by the Ningxia Natural Science Foundation (2023AAC05003, 2024AAC03048, 2024AAC03051), the National Natural Science Foundation of China (22108130, 22368039), the Ningxia Key Research & Development Program (2023BDE03001) and the Ningxia Overseas Returnee Innovation and Entrepreneurship Project for the financial support.

Abstract

Abstract: Addressing the contamination of antibiotics has attracted ever-increasing and imperative attention due to their widespread existence, easy-to-cause drug-resistant bacteria infection, coupled with their intrinsic toxicity and hazard to environments and human health. Herein, a novel CC/CoNi-LDH-10%Ce anode material was directly constructed through a simple and rapid electrodeposition strategy, serving as an efficacious electrocatalyst for removing ciprofloxacin (CIP) from aqueous solution. Such novel CC/CoNi-LDH-10%Ce anode delivered a higher charge transfer, relatively abundant oxygen vacancies, and a higher electrochemical active area. The as-fabricated CC/CoNi-LDH-10%Ce electrode achieved a substantially boosted CIP removal efficiency of 52.5% relative to that of pure CC at about 23.9%. Notably, doping an appropriate amount of Ce³⁺ can endow the pristine CC/CoNi-LDH with richer oxygen vacancies and excellent electrocatalytic performance. Additionally, the electrocatalytic oxidation of CIP was attributed to both direct oxidation on the electrode surface and indirect oxidation induced by the generated active species (superoxide radicals and hydroxyl radicals). This study provides a simple, universal and flexible tactic for other researchers in designing and manufacturing avenues of electrodes.

Key words: Layered double hydroxides, Ciprofloxacin, Rare earth metals, Conductive carriers, Electrocatalytic oxidation

摘要： Addressing the contamination of antibiotics has attracted ever-increasing and imperative attention due to their widespread existence, easy-to-cause drug-resistant bacteria infection, coupled with their intrinsic toxicity and hazard to environments and human health. Herein, a novel CC/CoNi-LDH-10%Ce anode material was directly constructed through a simple and rapid electrodeposition strategy, serving as an efficacious electrocatalyst for removing ciprofloxacin (CIP) from aqueous solution. Such novel CC/CoNi-LDH-10%Ce anode delivered a higher charge transfer, relatively abundant oxygen vacancies, and a higher electrochemical active area. The as-fabricated CC/CoNi-LDH-10%Ce electrode achieved a substantially boosted CIP removal efficiency of 52.5% relative to that of pure CC at about 23.9%. Notably, doping an appropriate amount of Ce³⁺ can endow the pristine CC/CoNi-LDH with richer oxygen vacancies and excellent electrocatalytic performance. Additionally, the electrocatalytic oxidation of CIP was attributed to both direct oxidation on the electrode surface and indirect oxidation induced by the generated active species (superoxide radicals and hydroxyl radicals). This study provides a simple, universal and flexible tactic for other researchers in designing and manufacturing avenues of electrodes.

关键词: Layered double hydroxides, Ciprofloxacin, Rare earth metals, Conductive carriers, Electrocatalytic oxidation

Xiao Wei, Xuan Fang, Shuming Ma, Huaqiang He, Zhixin Wu, Silin Li, Shihao Zhang, Pei Nian, Wenlan Ji, Yibin Wei. CC/CoNi-LDH anode doped with Ce³⁺ achieving enhanced electrocatalytic oxidation of ciprofloxacin[J]. Chinese Journal of Chemical Engineering, 2025, 80(4): 79-88.

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CC/CoNi-LDH anode doped with Ce³⁺ achieving enhanced electrocatalytic oxidation of ciprofloxacin

CC/CoNi-LDH anode doped with Ce³⁺ achieving enhanced electrocatalytic oxidation of ciprofloxacin

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