Electrochemical Removal of Low Concentration Pb(II) from Aqueous Solution based on PPy/α-ZrP/PTCF Electrode

Authors

Ru-yi CHEN, Department of Chemical Eegineering, Taiyuan University of Technology, Taiyuan 030024, Shanxi, China;
Peng-le ZHANG, Department of Chemical Eegineering, Taiyuan University of Technology, Taiyuan 030024, Shanxi, China;
Sen-liang LIAO, Guangdong Dongguan Quality Supervision Testing Center (National Mould Products Quality Supervision Inspection Center), Dongguan 523808, Guangdong, China;
Zhong-de WANG, Department of Chemical Eegineering, Taiyuan University of Technology, Taiyuan 030024, Shanxi, China;
Xiao-gang HAO, Department of Chemical Eegineering, Taiyuan University of Technology, Taiyuan 030024, Shanxi, China;Follow

Corresponding Author

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

Abstract

A novel organic-inorganic hybrid film consisting of polypyrrole/α-zirconium phosphate (PPy/α-ZrP) was prepared in an aqueous phase by cyclic voltammetry method. It was proved by FT-IR, XRD and XPS characterizations that the electroactive PPy/α-ZrP hybrid film was synthesized successfully. The PPy/α-ZrP film electrode prepared on a porous three-dimensional carbon felt (PTCF) was used for removal of a low concentration of Pb(II) ions from an aqueous solution by electrochemically switched ion exchange (ESIX). A quick uptake and release rate of Pb(II) onto the film electrode was obtained by adjusting redox state of the hybrid film. The removal efficiency and adsorption capacity of the PPy/α-ZrP/PTCF electrode for Pb(II) were about 1.8 and 2 times higher than those of traditional ion exchange (IX), respectively. Thus, the film electrode showed higher removal efficiency and adsorption capacity for Pb(II) by ESIX. The adsorption kinetics of Pb(II) could be described properly by the pseudo-second-order kinetic mode. A greater pseudo-second-order rate constant of 0.6142 g·mg^-1·h^-1 was achieved by ESIX, which was higher than that of 0.2632 g·mg^-1·h^-1 by IX.

Graphical Abstract

Keywords

electrochemically switched ion exchange, polypyrrole/α-zirconium phosphate/carbon felt electrode, adsorption selectivity, Pb(II), adsorption kinetics

DOI Link

https://doi.org/10.13208/j.electrochem.150210

Publication Date

2015-08-28

Online Available Date

2015-08-28

Revised Date

2015-04-22

Received Date

2015-02-10

Recommended Citation

Ru-yi CHEN, Peng-le ZHANG, Sen-liang LIAO, Zhong-de WANG, Xiao-gang HAO. Electrochemical Removal of Low Concentration Pb(II) from Aqueous Solution based on PPy/α-ZrP/PTCF Electrode[J]. Journal of Electrochemistry, 2015 , 21(4): 344-352.
DOI: 10.13208/j.electrochem.150210
Available at: https://jelectrochem.xmu.edu.cn/journal/vol21/iss4/7