物理化学学报 >> 2007, Vol. 23 >> Issue (06): 825-829.doi: 10.3866/PKU.WHXB20070606

研究论文 上一篇    下一篇

稻壳制备多孔炭对肌酐的吸附

张辉; 郭玉鹏; 刘艳华; 赵旭; 邓艳辉; 王子忱; 江雷   

  1. 吉林大学化学学院, 长春 130023; 中国科学院化学研究所, 分子科学中心, 北京 100080

  • 收稿日期:2006-12-08 修回日期:2007-02-15 发布日期:2007-06-04
  • 通讯作者: 王子忱; 江雷 E-mail:wangzc@jlu.edu.cn

Adsorption of Creatinine on Porous Carbon Prepared from Rice Husk

ZHANG Hui; GUO Yu-Peng; LIU Yan-Hua; ZHAO Xu; DENG Yan-Hui; WANG Zi-Chen; JIANG Lei   

  1. Department of Chemistry, Jilin University, Changchun 130023, P. R. China; Center for Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100080, P. R. China

  • Received:2006-12-08 Revised:2007-02-15 Published:2007-06-04
  • Contact: WANG Zi-Chen; JIANG Lei E-mail:wangzc@jlu.edu.cn

摘要:

研究了具有高比表面积稻壳基多孔炭(简称RHC)对人体内代谢产物肌酐(简称CR)的吸附, 将采用氢氧化钠活化稻壳制备的四种多孔炭和二种商业活性炭对肌酐的吸附进行了对比, 同时考察了盐酸、硝酸和双氧水对多孔炭进行表面处理及其经过高温处理(800 ℃)后对肌酐的吸附. 结果表明稻壳基多孔炭对肌酐的吸附超过商业炭,经过表面处理后多孔炭的吸附能力增强, 无氧化性盐酸处理后的多孔炭对肌酐的吸附量最大, 氧化性最强的硝酸处理后的多孔炭对肌酐的吸附量最小, 双氧水居中, 高温处理后的多孔炭吸附能力有所降低. 实验证实了多孔炭对CR的吸附符合Freundlich方程.

关键词: 多孔炭, 肌酐, 吸附

Abstract:

The adsorption of creatinine (CR, a kind of metabolin in the human body) on the rice husk-based carbons (RHCs) with high specific area was studied. Comparison was made between the CR adsorption on four samples of porous carbon prepared by NaOH activation from rice husk at different activation conditions and two samples of commercial carbon. Meanwhile, the adsorption of CR on the modified carbon surfaces treated with HCl, H2O2, and HNO3, respectively, and calcined at 800 ℃ was investigated. Compared with commercial carbons, it was shown that the RHCs had larger capacity for the adsorption of CR. Generally, the CR adsorption capacity increased after the modification of the carbon surfaces. With regard to the adsorbability towards CR, the porous carbons treated by HCl was the best, the porous carbons treated by HNO3 was the worst, and the one treated by H2O2 was in the middle. The adsorbability of porous carbons after being calcined at high temperature (800 ℃) was obviously worse. The experiment testified that the adsorption of CR by porous carbons followed the Freundlich equation.

Key words: Porous carbon, Creatinine, Adsorption

MSC2000: 

  • O647