Efficient removal of cobalt ions by capacitive deionization using an asymmetric electrode

IF 1.5 3区化学 Q3 CHEMISTRY, ANALYTICAL

Journal of Radioanalytical and Nuclear Chemistry Pub Date : 2024-09-12 DOI:10.1007/s10967-024-09748-4

Sang-Hun Lee, Mansoo Choi, Byung-Seon Choi, Wang-Kyu Choi, Naon Chang, Dong Woo Lee, Jeongmook Lee, Jong-Yun Kim, Sang Ho Lim

引用次数: 0

Abstract

Water pollution by metals is increasing. An electrode material, copper hexacyanoferrate (CuHCF), for capacitive deionization (CDI) to remove Co²⁺ from wastewater was developed. The asymmetric electrode structure of the CDI overcomes the limitations of traditional activated carbon electrodes (low ion removal capacity, ion removal rate, and charge efficiency). The specific capacitance of the CuHCF electrode (216.7 F g⁻¹) at 1 mV s⁻¹ was higher than that of a traditional electrode (92.0 F g⁻¹), and its deionization capacity was 156.85 mg g⁻¹ in 50 mg L⁻¹ aqueous Co²⁺ (charge efficiency = 68.4%). CuHCF is a high-performance electrode material for wastewater remediation.

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利用不对称电极的电容去离子法高效去除钴离子

金属对水的污染日益严重。我们开发了一种用于电容式去离子（CDI）的电极材料--六氰基铁酸铜（CuHCF），以去除废水中的 Co2+。CDI 的不对称电极结构克服了传统活性炭电极的局限性（离子去除容量、离子去除率和电荷效率较低）。CuHCF 电极在 1 mV s-1 时的比电容（216.7 F g-1）高于传统电极（92.0 F g-1），在 50 mg L-1 的 Co2+ 水溶液中的去离子容量为 156.85 mg g-1（电荷效率 = 68.4%）。CuHCF 是一种用于废水修复的高性能电极材料。

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来源期刊

Journal of Radioanalytical and Nuclear Chemistry 化学-分析化学

CiteScore

2.80

自引率

18.80%

发文量

504

审稿时长

2.2 months

期刊介绍： An international periodical publishing original papers, letters, review papers and short communications on nuclear chemistry. The subjects covered include: Nuclear chemistry, Radiochemistry, Radiation chemistry, Radiobiological chemistry, Environmental radiochemistry, Production and control of radioisotopes and labelled compounds, Nuclear power plant chemistry, Nuclear fuel chemistry, Radioanalytical chemistry, Radiation detection and measurement, Nuclear instrumentation and automation, etc.