期刊
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
卷 331, 期 3, 页码 263-267出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.colsurfa.2008.08.017
关键词
Activated carbon fiber; Surface modification; Adsorption; Vitamin B1; Folic acid
资金
- Natural Science Foundation of Shandong Province [Q2006F09]
- Open Foundation of Hubei Key Laboratroy of Novel Chemical Reactor
- Green Chemical Technology (Wuhan Institute of Technology, PR China) [GCP200807]
The activated carbon fiber was treated by nitrocellulous combustion and nitric acid oxidization to introduce amide and hydroxyl groups on its surface. The pore structure, surface morphology and chemical groups were investigated by nitrogen adsorption isotherms, SEM and FIFIR. The result showed that the pore structure and surface morphology were not much affected, but the amide and hydroxyl groups could be introduced after modification. The adsorption properties of folic acid and vitamin B1 indicated that the pore structure determined the saturated adsorption capacity at low concentration; however, the ACF-NC and ACF-HNO(3) showed the highest adsorption capacity and fastest adsorption rate for folic acid and vitamin B1 due to the amide and hydroxyl group on their surfaces at high concentration. (C) 2008 Elsevier B.V. All rights reserved.
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