Electrochemically Switched Separation of Yttrium Ion Using Electroactive Nickel Hexacyanoferrate Thin Films in Rare Earth Metal Solution

Authors

Hao ZHANG, Department of Chemical Engineering, Taiyuan University of Technology, Taiyuan 030024, China;
Xiao-gang HAO, Department of Chemical Engineering, Taiyuan University of Technology, Taiyuan 030024, China;Follow
Zhong-de WANG, Department of Chemical Engineering, Taiyuan University of Technology, Taiyuan 030024, China;
Zhong-lin ZHANG, Department of Chemical Engineering, Taiyuan University of Technology, Taiyuan 030024, China;
Xu-li MA, Department of Chemical Engineering, Taiyuan University of Technology, Taiyuan 030024, China;
Yi-bing LI, Department of Chemical Engineering, Taiyuan University of Technology, Taiyuan 030024, China;
Shi-bin LIU, Department of Chemical Engineering, Taiyuan University of Technology, Taiyuan 030024, China;

Corresponding Author

Xiao-gang HAO(xghao@tyut.edu.cn)

Abstract

Electroactive nickel hexacyanoferrate (NiHCF) thin films were synthesized by cathodic deposition and investigated as electrochemically switched ion exchange (ESIX) materials for the separation of Y³⁺ from aqueous solutions. In 0.1 mol·L^-1 Y(NO₃)₃ solution, cyclic voltammetry (CV) combined with electrochemical quartz crystal microbalance (EQCM) technique was used to investigate the electroactivity, reversibility of the film electrodes and the mechanism of ion exchange. The electrochemical behavior of NiHCF film electrodes was also compared with that in Sr(NO₃)₂ solutions. The ion selectivity of the film was investigated in 0.1 mol·L^-1 solutions containing [Y(NO₃)₃ + Sr(NO₃)₂]. The elementary composition of NiHCF films in reduced and oxidized forms were also characterized by X-ray photoelectron spectroscopy (XPS). Experimental results show that the electroactive NiHCF films have reversible electrochemical behavior in aqueous solutions containing Y³⁺ and Sr²⁺, respectively. The NiHCF film electrodes displayed a high Y³⁺ selectivity in Y³⁺/Sr²⁺ binary mixtures and the Y³⁺ ions could be separated effectively from aqueous solutions by ESIX processes.

Graphical Abstract

Keywords

nickel hexacyanoferrate films, electrochemically switched ion exchange, separation of yttrium ion, rare earth

DOI Link

https://doi.org/10.61558/2993-074X.2140

Publication Date

2013-10-28

Online Available Date

2013-03-08

Revised Date

2013-03-08

Received Date

2012-12-25

Recommended Citation

Hao ZHANG, Xiao-gang HAO, Zhong-de WANG, Zhong-lin ZHANG, Xu-li MA, Yi-bing LI, Shi-bin LIU. Electrochemically Switched Separation of Yttrium Ion Using Electroactive Nickel Hexacyanoferrate Thin Films in Rare Earth Metal Solution[J]. Journal of Electrochemistry, 2013 , 19(5): 482-487.
DOI: 10.61558/2993-074X.2140
Available at: https://jelectrochem.xmu.edu.cn/journal/vol19/iss5/13