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

催化和表面科学 上一篇    下一篇

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. 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. 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:

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