Preparation of Pine Needle Based Carbon Electrode and Its Electrosorption of Alkali/Alkaline Earth Metal Ions
HUANG Jiancheng1,2,3, DING Dong1,2,3, LI Yuting1, ZHANG Huifang1,2, LIU Haining1,2, HU Yaoqiang1,4, YE Xiushen1,2, WU Zhijian1,2
1 Key Laboratory of Comprehensive and Highly Efficient Utilization of Salt Lake Resources, Qinghai Institute of Salt Lakes, Chinese Academy of Sciences, Xi-ning 810008, China 2 Key Laboratory of Salt Lake Resources Chemistry of Qinghai Province, Xining 810008, China 3 School of Chemical Sciences, University of Chinese Academy of Sciences, Beijing 100049, China 4 College of Ocean and Meteorology, Guangdong Ocean University, Zhanjiang 524088, China
Abstract: Two kinds of carbon materials (PN and APN) based on pine needle were prepared by low temperature hydrothermal-high temperature carboni-zation (activation) method using pine needle as raw material. The surface morphology, structure and electrochemical properties of the electrode were characterized by SEM, Raman, XRD, specific surface area and pore size analyzer and electrochemical workstation. The electrosorption behavior of the two electrodes on alkali/alkaline earth metal ions was investigated. The results showed that APN had larger specific surface area (1 545 m2·g-1) and more abundant pore structure than that of PN. APN had good electrochemical performance as electrode. In the case of the same initial concentration, the sequence of adsorption capacities was Sr2+ > Ca2+ > Mg2+ > Cs+> Rb+> K+> Na+> Li+. With the increase of voltage, the adsorption amount of alkali metal ions increased. The adsorption capacity increased with the increase of initial concentration of metal ions. Moreover, APN also showed excellent reusability by consecutive cycles of adsorption-desorption.
黄建成, 丁冬, 李玉婷, 张慧芳, 刘海宁, 胡耀强, 叶秀深, 吴志坚. 松针基碳电极的制备及对碱/碱土金属离子的电吸附[J]. 材料导报, 2020, 34(12): 12015-12019.
HUANG Jiancheng, DING Dong, LI Yuting, ZHANG Huifang, LIU Haining, HU Yaoqiang, YE Xiushen, WU Zhijian. Preparation of Pine Needle Based Carbon Electrode and Its Electrosorption of Alkali/Alkaline Earth Metal Ions. Materials Reports, 2020, 34(12): 12015-12019.
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