Surface activation of a polymer based carbon

被引：80
作者：
Samant, PV
Gonçalves, F
Freitas, MMA
Pereira, MFR
Figueiredo, JL
机构：
[1] Univ Porto, Lab Catalise & Mat, Dept Engn Quim, Fac Engn, P-4200465 Oporto, Portugal
[2] Inst Super Engn Porto, DEQ, Inst Politecn Porto, P-4200072 Oporto, Portugal
来源：
CARBON | 2004年 / 42卷 / 07期
关键词：
carbon xerogel; activation; temperature programmed desorption; surface properties;
D O I：
10.1016/j.carbon.2004.01.034
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
A highly mesoporous carbon was synthesized by the conventional sol-gel method involving the polymerization of resorcinol and formaldehyde followed by carbonization. Oxygen activation was employed to modify the surface properties of the polymer based carbon material. The textural properties (surface area, micropore volume) were evaluated from the nitrogen adsorption isotherm at 77 K. The samples were also characterized by XPS, TGA and by elemental analysis. The pH(PZC) of the oxidized carbon was also determined. The amounts of oxygen surface complexes generated were quantitatively determined using temperature programmed desorption analysis (TPD). The oxidation treatment was found to be quite effective in the generation of oxygen rich surfaces at moderate burn off. (C) 2004 Elsevier Ltd. All rights reserved.
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收藏
页码：1321 / 1325
页数：5
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