胺化处理的纳米孔炭材料上汞(II)离子吸附性能

doi:10.3866/PKU.WHXB20110519

物理化学学报 >> 2011, Vol. 27 >> Issue (05): 1181-1187.doi: 10.3866/PKU.WHXB20110519

胺化处理的纳米孔炭材料上汞(II)离子吸附性能

袁晓玲¹, 芦春梅², 朱万春¹, 贾明君¹, 刘钢¹, 王振旅¹, 张文祥¹

1. 吉林省表面与界面化学重点实验室, 吉林大学化学学院, 长春 130012;
2. 吉林出入境检验检疫局, 长春 130062

收稿日期:2011-01-19 修回日期:2011-03-22 发布日期:2011-04-28
通讯作者: 刘钢, 张文祥 E-mail:zhwenx@jlu.edu.cn; lgang@jlu.edu.cn
基金资助:
国家自然科学基金(20773050, 21003059)和教育部博士点基金新教师项目(20090061120024)资助

Adsorption Performance of Hg(II) Ions on Amine-Modified Nanoporous Carbon Materials

YUAN Xiao-Ling¹, LU Chun-Mei², ZHU Wan-Chun¹, JIA Ming-Jun¹, LIU Gang¹, WANG Zhen-Lü¹, ZHANG Wen-Xiang¹

1. Key Laboratory of Surface and Interface Chemistry of Jilin Province, College of Chemistry, Jilin Uinversity, Changchun 130012, P. R. China;
2. Jilin Entry-Exit Inspection and Quarantine Bureau, Changchun 130062, P. R. China

Received:2011-01-19 Revised:2011-03-22 Published:2011-04-28
Contact: LIU Gang, ZHANG Wen-Xiang E-mail:zhwenx@jlu.edu.cn; lgang@jlu.edu.cn
Supported by:
The project was supported by the National Natural Science Foundation of China (20773050, 21003059) and Ph.D. Programs Foundation of Ministry of Education of China (20090061120024).

摘要/Abstract

摘要：

研究了纳米孔炭(NC)及乙二胺修饰的NC材料(NC-EDA)对水溶液中汞离子的吸附性能. 结果表明: NC材料对汞离子具有吸附能力; 经乙二胺修饰后, 材料的吸附性能显著提高; 并且NC-EDA材料经高温(873 K)处理后依然能够保持良好的吸附性能. 结合各种表征结果, 可以认为NC材料表面所富含的－COOH、－OH等基团有利于有机胺配体的引入, 使材料表面存在大量的碱性含氮物种. 这类碱性物种能够与汞离子发生较强的相互作用, 从而使材料表现出良好的汞离子吸附性能.

关键词: 纳米孔炭, 吸附, 乙二胺, 汞离子, 碱性

Abstract:

The adsorption performance of nanoporous carbon (NC) and ethylenediamine-modified nanoporous carbon (NC-EDA) toward Hg²⁺ ions was investigated in an aqueous solution. The NC material exhibited a relatively high adsorption capacity for Hg²⁺ ions, and the adsorption capacity was improved significantly by ethylenediamine modification. After thermal-treatment at 873 K, the adsorption capacity of the NC-EDA material was still relatively high. Based on various characterization results, we propose that the presence of abundant functional groups (i.e., －COOH, －OH) on the surface of the NC materials is beneficial for the introduction of a large number of amino functional groups resulting in the presence of abundant basic N-containing species on the surface of the NC materials. These basic species can interact with mercury ions and thus significantly improve the adsorption capacity of the carbon material.

Key words: Nanoporous carbon, Adsorption, Ethylenediamine, Mercury ion, Alkalinity

MSC2000:

O647

袁晓玲, 芦春梅, 朱万春, 贾明君, 刘钢, 王振旅, 张文祥. 胺化处理的纳米孔炭材料上汞(II)离子吸附性能[J]. 物理化学学报, 2011, 27(05): 1181-1187.

YUAN Xiao-Ling, LU Chun-Mei, ZHU Wan-Chun, JIA Ming-Jun, LIU Gang, WANG Zhen-Lü, ZHANG Wen-Xiang. Adsorption Performance of Hg(II) Ions on Amine-Modified Nanoporous Carbon Materials[J]. Acta Phys. -Chim. Sin., 2011, 27(05): 1181-1187.

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胺化处理的纳米孔炭材料上汞(II)离子吸附性能

Adsorption Performance of Hg(II) Ions on Amine-Modified Nanoporous Carbon Materials

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