Research & Development

Study on capacitive deionization of Cs+ by ACC/CuHCF composite electrode

  • LI Xukai ,
  • CHEN Sili ,
  • JING Qing ,
  • GUO Liang ,
  • ZHANG Zhengke ,
  • WANG Jinsong
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  • 1.School of Civil Engineering,University of South China,Hengyang 421001,China
    2.South China Institute of Environmental Sciences,Ministry of Ecology and Environment,Key Laboratory of Ecological Environment;Emergency and Sudden Risk Control,Guangzhou 510655,China

Received date: 2025-04-09

  Online published: 2025-06-10

Abstract

To efficiently remove Cs⁺ from aqueous solutions,activated carbon fiber cloth/copper hexacyanoferrate(ACC/CuHCF) composite electrodes were successfully fabricatedvia a coprecipitation method.In combination with capacitive deionization(CDI) technology, the effects of applied voltage,initial Cs⁺ concentration,competing ions,and cycling usage on adsorption performance were investigated.The electrode material′s morphology,structure,elemental composition,and electrochemical properties were characterized using varieties techniques.The results indicated that ACC/CuHCF exhibited a face-centered cubic structure,which facilitated ion migration and demonstrated excellent electrochemical adsorption performance.Under optimized conditions,the composite electrode achieved a maximum adsorption capacity of 184.98 mg/g for Cs⁺.Moreover,the ACC/CuHCF composite electrode demonstrated excellent Cs⁺ selectivity and robust cycling stability.Adsorption kinetics and isotherm model fitting revealed a surface-heterogeneous monolayer chemisorption process,with the rate controlled by diffusion resistance within the particles.This study provided an effective strategy for the efficient removal of Cs⁺ from aqueous solutions.

Cite this article

LI Xukai , CHEN Sili , JING Qing , GUO Liang , ZHANG Zhengke , WANG Jinsong . Study on capacitive deionization of Cs+ by ACC/CuHCF composite electrode[J]. Inorganic Chemicals Industry, 2026 , 58(3) : 16 -24 . DOI: 10.19964/j.issn.1006-4990.2025-0159

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