ACC/CuHCF复合电极对Cs+的电容去离子性能研究

doi:10.19964/j.issn.1006-4990.2025-0159

摘要/Abstract

摘要：

为实现对水溶液中Cs⁺的高效去除，采用共沉淀法成功制备活性炭纤维布/六氰基铁酸铜（ACC/CuHCF）复合电极，并结合电容去离子（CDI）技术，探讨施加电压、初始Cs⁺浓度、竞争离子及循环使用等因素对吸附性能的影响。通过多种表征技术对电极材料的形貌、结构、元素组成及电化学性能进行表征。结果表明，ACC/CuHCF具有面心立方结构，为离子迁移提供便捷的传输通道，展现出优异的电化学吸附性能。在优化的电化学条件下，复合电极对Cs⁺的最大吸附量达到184.98 mg/g。此外，ACC/CuHCF复合电极表现出较高的Cs⁺选择性及良好的循环稳定性。吸附动力学、等温线模型拟合结果表明，吸附过程是表面异质性单层化学吸附，其速率受颗粒内部扩散阻力控制，研究结果为水溶液中Cs⁺的高效去除提供一种有效的解决方案。

关键词: 电容去离子, 活性炭纤维布, 六氰基铁酸铜, 铯

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.

Key words: capacitive deionization, activated carbon fiber cloth, copper hexacyanoferrate, cesium

中图分类号:

TQ131.15

李绪锴, 陈思莉, 敬擎, 郭亮, 张政科, 王劲松. ACC/CuHCF复合电极对Cs⁺的电容去离子性能研究[J]. 无机盐工业, 2026, 58(3): 16-24.

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.

图/表 13

图1

图2

图3

图4

图5

图6

图7

图8

表1

图9

表 2

图10

图11

参考文献 29

[1]	HOSODA M， TOKONAMI S， OMORI Y，et al.A comparison of the dose from natural radionuclides and artificial radionuclides after the Fukushima nuclear accident［J］.Journal of Radiation Research，2016，57（4）：422-430.
[2]	KATO M， OKADA Y， HIRAI S，et al.Comparative analysis of distributions of radioactive cesium and potassium and stable cesium，potassium，and strontium in brown rice grains contaminated with radioactive materials released by the Fukushima Daiichi Nuclear Power Plant accident［J］.Journal of Radioanalytical and Nuclear Chemistry，2016，310（1）：247-252.
[3]	RONG Yaqin， LI Shuai， NIU Junjian，et al.Carbon-based electroactive ion exchange materials：Ultrahigh removal efficiency and ion selectivity for rapid removal of Cs⁺ ions［J］.Separation and Purification Technology，2021，274：119056.
[4]	LI Kaizhong， WANG Li， ZHANG Lei.Screening diluents to optimize cesium contaminant separation using t-BAMBP extractant［J］.Journal of Hazardous Materials，2024，477：135410.
[5]	HOSSAIN F.Natural and anthropogenic radionuclides in water and wastewater：Sources，treatments and recoveries［J］.Journal of Environmental Radioactivity，2020，225：106423.
[6]	WANG Mengzhou， FU Mingyan， LI Junfeng，et al.New insight into polystyrene ion exchange resin for efficient cesium sequestration：The synergistic role of confined zirconium phosphate nanocrystalline［J］.Chinese Chemical Letters，2024，35（1）：108442.
[7]	ZHOU Feng， XIA Xinming， WEI Yaozhen，et al.Rapid and efficient separation of radioactive cesium ion/other radioactive ions by reduced graphene oxide membrane［J］.Journal of Environmental Chemical Engineering，2024，12（6）：114284.
[8]	郭雪琴，邓小川，朱朝梁，等.改性硅藻土负载磷钼酸铵复合吸附剂的制备及其吸附Cs⁺研究［J］.无机盐工业，2023，55（11）：19-26，36.
	GUO Xueqin， DENG Xiaochuan， ZHU Chaoliang，et al.Study on preparation of modified diatomite loaded ammonium phosphomolybdate composite adsorbent and its adsorption performance of Cs⁺ ［J］.Inorganic Chemicals Industry，2023，55（11）：19-26，36.
[9]	王航宇，杜以法，郭霞，等.NiCo普鲁士蓝类似物中空纳米泡的制备及其Cs⁺吸附性能研究［J］.无机盐工业，2024，56（10）：55-63，150.
	WANG Hangyu， DU Yifa， GUO Xia，et al.Study on preparation of NiCo Prussian blue analogue hollow nanobubbles and their Cs⁺ adsorption properties［J］.Inorganic Chemicals Industry，2024，56（10）：55-63，150.
[10]	MOHAMED S K， ABUELHAMD M， ALLAM N K，et al.Eco-friendly facile synthesis of glucose-derived microporous carbon spheres electrodes with enhanced performance for water capacitive deionization［J］.Desalination，2020，477：114278.
[11]	LIU Xiaojing， WANG Jianlong.Electro-assisted adsorption of Cs（Ⅰ） and Co（Ⅱ） from aqueous solution by capacitive deionization with activated carbon cloth/graphene oxide composite electrode［J］.Science of the Total Environment，2020，749：141524.
[12]	KIM Y， EOM H H， KIM D，et al.Adsorptive removal of cesium by electrospun nanofibers embedded with potassium copper hexacyanoferrate［J］.Separation and Purification Technology，2021，255：117745.
[13]	WANG Jianlong， ZHUANG Shuting， LIU Yong.Metal hexacyano-ferrates-based adsorbents for cesium removal［J］.Coordination Chemistry Reviews，2018，374：430-438.
[14]	UPENDRANATH K， VENKATESH T， ARTHOBA NAYAKA Y，et al.Optoelectronic，DFT and current-voltage performance of new Schiff base 6-nitro-benzimidazole derivatives［J］.Inorganic Chemistry Communications，2022，139：109354.
[15]	ZHAO Anning， PENG Jian， MAO Wenshan，et al.Fe-Co PBA/rGO interface strategy enabling fast Al³⁺ intercalation for stable aqueous Al-ion batteries［J］.Chemical Engineering Journal，2024，493：152790.
[16]	ZHANG Jingxi， DONG Yanhao， WANG Changan.Surface-like diffusion of fast ions in framework energy materials for Li- and Na-ion batteries［J］.Angewandte Chemie International Edition，2024，63（33）：e202408629.
[17]	WANG Jianlong， WANG Shizong.A critical review on graphitic carbon nitride（g-C₃N₄）-based materials：Preparation，modification and environmental application［J］.Coordination Chemistry Reviews，2022，453：214338.
[18]	LIU Xiaojing， WU Jinling， WANG Jianlong.Electro-adsorption of Cs（Ⅰ） ions from aqueous solution by capacitive deionization using ACC/MoO₃ composite electrode［J］.Science of the Total Environment，2023，865：161110.
[19]	QI Ya′e， HUANG Jianhang， YAN Lei，et al.Towards high-performance aqueous zinc-ion battery via cesium ion intercalated vanadium oxide nanorods［J］.Chemical Engineering Journal，2022，442：136349.
[20]	MAO Yunfeng， QIN Huai， ZHANG Hua，et al.Unraveling the effect of CDI electrode characteristics on Cs removal from the perspective of ion transfer and energy composition［J］.Journal of Hazardous Materials，2023，452：131263.
[21]	HU Mengshi， LI Qian， LI Guangyue，et al.Construction of carboxylated multi-walled carbon nanotube/copper oxide/nano silver modified graphite felt electrode and its adsorption mechanism for UO₂ ²⁺ ［J］.Journal of Radioanalytical and Nuclear Chemistry，2025，334（3）：2501-2516.
[22]	ZHANG Hongguo， WAN Kuilin， YAN Jia，et al.The function of doping nitrogen on removing fluoride with decomposing La-MOF-NH₂：Density functional theory calculation and experiments［J］.Journal of Environmental Sciences，2024，135：118- 129.
[23]	KIM G，RYU J， KIM H I，et al.Efficient electrochemical cesium recovery from seawater using nickel hexacyanoferrate-coated membrane-capacitive deionization cell for rapid analysis of ¹³⁷Cs［J］.Journal of Water Process Engineering，2024，66：105925.
[24]	REVELLAME E D， FORTELA D L， SHARP W，et al.Adsorption kinetic modeling using pseudo-first order and pseudo-second order rate laws：A review［J］.Cleaner Engineering and Technology，2020，1：100032.
[25]	WANG Jianlong， GUO Xuan.Rethinking of the intraparticle diffusion adsorption kinetics model：Interpretation，solving methods and applications［J］.Chemosphere，2022，309：136732.
[26]	WANG Jianlong， GUO Xuan.Adsorption isotherm models：Classification，physical meaning，application and solving method［J］.Chemosphere，2020，258：127279.
[27]	DE VARGAS BRIÃO G， HASHIM M ALI， CHU K H.The Sips isotherm equation：Often used and sometimes misused［J］.Separation Science and Technology，2023，58（5）：884-892.
[28]	WANG Wenwen， LUO Jianqiang， WEI Wei，et al.An asymmetric pulsed current-assisted electrochemical method for Sr（Ⅱ） extraction using supramolecular composites［J］.Chemosphere，2021，271：129531.
[29]	LIU Can， GE Haojie， YAN Linxue，et al.Readily regenerated porous fiber-supported metal tin sulfide for rapid and selective removal of cesium from wastewater［J］.Journal of Cleaner Production，2023，401：136729.

电压/V	质量浓度/ （mg·L^-1）	准一级			准二级			颗粒内扩散
电压/V	质量浓度/ （mg·L^-1）	R²	q_e/（mg·g^-1）	k₁/min^-1	R²	q_e/（mg·g^-1）	k₂/（g·mg^-1·min^-1）	R²	k_3a/（mg·g^-1·min^-1/2）	k_3b/（mg·g^-1·min^-1/2）
0	5	0.997 7	21.52	0.000 8	0.997 9	16.34	0.018 8	0.987 2	1.418 2	0.679 4
0.6	5	0.997 8	88.57	0.000 3	0.998 8	70.75	0.024 3	0.996 7	6.624 0	2.127 1
1.2	5	0.996 3	87.26	0.000 2	0.998 4	65.11	0.015 0	0.996 7	4.916 6	3.641 6
0.6	10	0.997 7	143.67	0.000 2	0.998 9	119.05	0.025 6	0.994 5	11.350 8	3.293 7
0.6	20	0.998 6	221.90	0.000 1	0.998 9	184.40	0.025 9	0.993 9	17.567 7	5.070 8

首页

全国无机盐信息中心

中国化工学会

无机酸碱盐专业委员会