松针基碳电极的制备及对碱/碱土金属离子的电吸附

doi:10.11896/cldb.19040280

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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.

Key words： biomass carbon alkali/alkaline earth metal ions hydrothermal carbonization electrosorption

Published: 29 May 2020

CLC number:

O647.3

Fund:This work was financially supported by National Natural Science Foundation of China (U1607102), the Foundation of Qinghai Provincial Science and Technology Project (2018-ZJ-706),Qinghai International Cooperation Project (2018-HZ-807), “Light of West China” Program, Thousand Talents Plan in Qinghai Province, Doctoral Research Initiation Fund of Guangdong Ocean University (R17070).

About author:: Jiancheng Huang, Master's degree students of University of Chinese Academy of Sciences under the supervision of associate professor Xiushen Ye. His research interest is separation and extraction of rare elements in salt lake. Published 2 SCI and 2 core Chinese articles.
Xiushen Ye obtained his Ph. D. in 2009 and served as associate professor in Qinghai Institute of Salt Lakes, Chinese Academy of Sciences. He has published more than 60 journal papers. His research interests are separation materials and technologies of rare elements from salt lakes.

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	Articles by authors
	HUANG Jiancheng
	DING Dong
	LI Yuting
	ZHANG Huifang
	LIU Haining
	HU Yaoqiang
	YE Xiushen
	WU Zhijian

Cite this article:

HUANG Jiancheng,DING Dong,LI Yuting, et al. Preparation of Pine Needle Based Carbon Electrode and Its Electrosorption of Alkali/Alkaline Earth Metal Ions[J]. Materials Reports, 2020, 34(12): 12015-12019.

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http://www.mater-rep.com/EN/10.11896/cldb.19040280 OR http://www.mater-rep.com/EN/Y2020/V34/I12/12015

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