期刊
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
卷 601, 期 -, 页码 -出版社
ELSEVIER
DOI: 10.1016/j.colsurfa.2020.124983
关键词
Resin-based carbon; Bamboo char; VOCs; Adsorption; Density functional theory
资金
- National Key Technologies Research and Development Program of China [2019YFC0214302, 2019YFC0214303]
- Key Research and Development Project of Hunan Province, China [2018SK2037, 2018SK2038]
- Fundamental Research Funds for the Central Universities of Central South University [2018zzts158]
The objective of this study was to assess the VOCs (methanol and toluene) adsorption capacity of doped porous carbon materials (resin-based carbon and bamboo char) by experiments and theoretical calculations. Results showed N-doped porous carbon material exhibited a high specific area (2293.2 m(2) g(-1)), a desirable microporocity (0.90 cm(3) g(-1)), and a large adsorption capacity for methanol (915.3 mg g(-1)) and toluene (622.9 mg g(-1)), which were better than those derived from bamboo char. According to the density functional theory calculation, in terms of different N-containing functional groups, the results showed that methanol adsorption was dominated by the electrostatic interaction between the carbon surface and methanol, while toluene was mainly trapped through pi-pi dispersive interaction with the aromatic ring moving to the carbon surface. This study gave us hints to conduct the doping of polarized element to adsorb polar gases.
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