期刊
JOURNAL OF COLLOID AND INTERFACE SCIENCE
卷 357, 期 1, 页码 210-214出版社
ACADEMIC PRESS INC ELSEVIER SCIENCE
DOI: 10.1016/j.jcis.2011.01.104
关键词
Activated carbon fibres; Supercritical activation; Phenol adsorption; Texture; Surface chemistry
资金
- Foundation for Science and Technology (FCT) [SFRH/BPD/14804/2003]
- Fundação para a Ciência e a Tecnologia [SFRH/BPD/14804/2003] Funding Source: FCT
The influence of texture and surface chemistry on the phenol adsorption capacity of activated carbon fibres (ACFs) was studied. ACFs were prepared by carbonization of a phenolic textile fibre under nitrogen flow, followed by activation with H(2)O and CO(2) (under atmospheric pressure and supercritical state). The materials were characterised by N(2) and CO(2) adsorption, and by temperature programmed desorption studies. A strong correlation between the amount of adsorbed phenol and the micropore volume has been observed. The relationship between surface oxygen concentration and amount of physisorbed and chemisorbed phenol was assessed, and it was shown that higher amounts of surface oxygen groups decreased the phenol chemisorption capacity of ACFs. (C) 2011 Elsevier Inc. All rights reserved.
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