Acta Phys. -Chim. Sin. ›› 2011, Vol. 27 ›› Issue (05): 1181-1187.doi: 10.3866/PKU.WHXB20110519

• CATALYSIS AND SURFACE SCIENCE • Previous Articles     Next Articles

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).

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