Electrosorption Characteristics of NF/PDMA /MnO2-Co Capacitor Electrode for Pb2+in a Dilute Solution of Lead Ions

被引：0

作者：

Tang C. ^{[1
]}

Niu H. ^{[2
]}

Huang P. ^{[1
]}

Wang F. ^{[2
]}

Zhang Y. ^{[1
]}

Xue J. ^{[1
]}

机构：

[1] School of Chemistry and Chemical Engineering, Xi'an University of Architecture and Technology, Xi'an

[2] School of Metallurgical Engineeringa, Xi'an University of Architecture and Technology, Xi'an

来源：

Cailiao Yanjiu Xuebao/Chinese Journal of Materials Research | 2021年 / 35卷 / 02期

基金：

中国国家自然科学基金;

关键词：

Capacitive deionization; Electrodeposition; MnO[!sub]2[!/sub] electrode; Pb[!sup]2+[!/sup; Surface and interface in the materials;

D O I：

10.11901/1005.3093.2020.193

中图分类号：

学科分类号：

摘要：

NF/PDMA/MnO2-Co electrode was prepared by anodic electrodeposition on the foam nickel substrate, and which then was characterized by FESEM-EDS, XPS and Raman spectroscopy. The capacitance characteristics and Pb2+ adsorption behavior of the composite electrode were evaluated by cyclic voltammetry and capacitance adsorption desorption tests. The results show that the NF/PDMA/MnO2-Co composite electrode prepared by applied current density of 1 mA/cm2 at 30 ℃ for 3min has a higher adsorption capacity (59.9 mg/g) and specific capacitance (208.8 F/g) for the simulated wastewater of 20 mg/L Pb2+. The synergistic effect of the bottom layer of PDMA and the top layer of Co doped MnO2 can effectively improve the capacitance and adsorption performance of the MnO2 electrode. The adsorption kinetics fitting shows that the adsorption process is controlled by the mixture of physical and chemical adsorption, and is limited by the mass transfer of ions and the diffusion in pores. The stability of the electrode is higher, and its adsorption capacity is 51.7 mg/g after four cycles of adsorption. © 2021, Editorial Office of Chinese Journal of Materials Research. All right reserved.

引用

页码：115 / 127

页数：12

共 37 条

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