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

材料导报

2020, Vol. 34

Issue (12): 12015-12019 https://doi.org/10.11896/cldb.19040280

无机非金属及其复合材料

松针基碳电极的制备及对碱/碱土金属离子的电吸附

黄建成^1,2,3, 丁冬^1,2,3, 李玉婷¹, 张慧芳^1,2, 刘海宁^1,2, 胡耀强^1,4, 叶秀深^1,2, 吴志坚^1,2

1 中国科学院青海盐湖研究所,中国科学院盐湖资源综合高效利用重点实验室,西宁 810008
2 青海省盐湖资源化学重点实验室,西宁 810008
3 中国科学院大学化学科学学院,北京 100049
4 广东海洋大学海洋与气象学院,湛江 524088

Preparation of Pine Needle Based Carbon Electrode and Its Electrosorption of Alkali/Alkaline Earth Metal Ions

HUANG Jiancheng^1,2,3, DING Dong^1,2,3, LI Yuting¹, ZHANG Huifang^1,2, LIU Haining^1,2, HU Yaoqiang^1,4, YE Xiushen^1,2, WU Zhijian^1,2

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

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摘要以松针为初始原料,通过低温水热-高温碳化(活化)法,制备了两种松针基生物碳(PN和APN),在此基础上以自制生物炭为主要原料制备了生物碳基电吸附电极。通过SEM、拉曼光谱仪、XRD仪、比表面积和孔径分析仪以及电化学工作站对材料的形貌、结构和电化学性能进行表征,并考察了电吸附电极对碱/碱土金属离子的电吸附行为。结果表明,经活化得到的生物碳(APN)具有较大的比表面积(1 545 m²·g^-1)和更为发达的孔道结构,作为电吸附电极,其电化学性能良好(电容高)。吸附性能研究表明,在初始浓度相同的情况下,电极对离子的归一化吸附容量顺序为:Sr²⁺ > Ca²⁺ > Mg²⁺ > Cs⁺> Rb⁺> K⁺> Na⁺> Li⁺。吸附电压越高,电极的吸附容量越大。离子初始浓度越大,吸附容量也越大。循环结果表明,生物碳基电吸附电极的循环使用性能良好。

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	黄建成
	丁冬
	李玉婷
	张慧芳
	刘海宁
	胡耀强
	叶秀深
	吴志坚

关键词: 生物质碳碱/碱土金属离子水热高温碳化法电吸附

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

出版日期: 2020-06-25 发布日期: 2020-05-29

ZTFLH:

O647.3

基金资助: 国家自然科学基金(U1607102);青海省应用基础研究(2018-ZJ-706);青海省国际合作项目(2018-HZ-807);中国科学院西部之光人才项目;青海省高端创新人才千人计划项目;广东海洋大学科研启动经费资助项目(R17070)

通讯作者: yexs@isl.ac.cn

作者简介: 黄建成,中国科学院大学硕士研究生。主要研究方向为盐湖稀有元素分离提取。目前发表SCI 论文2篇,中文核心论文2篇。
叶秀深,博士,中国科学院青海盐湖研究所副研究员,2009年获得博士学位。主要从事盐湖稀有元素分离材料与技术研究,目前已发表学术论文60余篇,申请专利40余项。

引用本文:

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.

链接本文:

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

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