壳聚糖改性活性炭电极电吸附4-氯酚的研究  

Electrosorption of 4-chlorophenol by chitosan-modified activated carbon electrode

作　　者：段小月[1] 周莹[2] 刘伟[1] 常立民[2] 

机构地区：[1]吉林师范大学环境科学与工程学院,吉林四平136000 [2]吉林师范大学化学学院,吉林四平136000

出　　处：《炭素技术》2014年第3期13-16,共4页Carbon Techniques

基　　金：吉林省教育厅"十二五"科学技术研究项目(No.2013209)

摘　　要：将粉末活性炭和自制黏结剂均匀混合,制备了活性炭电极(ACE)。为了提高ACE的电吸附性能,利用壳聚糖对ACE进行改性。采用扫描电子显微镜(SEM)、傅里叶红外光谱仪(FTIR)、循环伏安(CV)对壳聚糖改性ACE进行表征,并用于电吸附去除水中4-氯酚(4-CP)的研究。结果表明:壳聚糖改性能明显提高ACE电吸附4-CP能力,随着极化电压的升高4-CP的去除率升高,该吸附过程为吸热过程。In this paper, the activated carbon electrode （ACE） was prepared from activated carbon （AC） and self-prepared binder. The ACE was modified with chitosan （CH） to improve its electrosorption performance. The structure and properties of the modified ACE were characterized by scanning electron microscope （SEM）, Fourier transform infrared spectrophotometry （FTIR） and cyclic voltammetry （CV）. The electrosorption for 4-chlorophenol was studied. The experimental results showed that, modification with CH could improve the electrosorption of 4-CP on ACE, and the desorption rate of 4-CP was increased significantly with the increase of polarization potential. The thermodynamic analysis indicated that the electrosorption of 4-CP was an endothermic process.

关 键 词：电吸附 活性炭电极 改性 壳聚糖 4-氯酚 

分 类 号：TQ424.1[化学工程]