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National Chung Hsing University Institutional Repository - NCHUIR > 農業暨自然資源學院 > 土壤環境科學系 > 依資料類型分類 > 期刊論文 >  Adsorption of selected volatile organic vapors on multiwall carbon nanotubes

Please use this identifier to cite or link to this item: http://nchuir.lib.nchu.edu.tw/handle/309270000/128426

標題: Adsorption of selected volatile organic vapors on multiwall carbon nanotubes
作者: Shih, Y.H.;Li, M.S.
關鍵字: carbon multiwall nanotubes;adsorption;volatile organic compounds;inverse gas-chromatography;diverse set;raman;desorption;graphite;scattering;fullerene;surfaces;nitrogen;sorption
日期: 2008
Issue Date: 2012-12-07 14:48:07 (UTC+8)
關連: Journal of Hazardous Materials, Volume 154, Issue 1-3, Page(s) 21-28.
摘要: Carbon nanotubes are expected to play an important role in sensing, pollution treatment and separation techniques. This study examines the adsorption behaviors of volatile organic compounds (VOCs), n-hexane, benzene, trichloroethylene and acetone on two multiwall carbon nanotubes (MWCNTs), CNT1 and CNT2. Among these VOCs, acetone exhibits the highest adsorption capacity. The highest adsorption enthalpies and desorption energies of acetone were also observed. The strong chemical interactions between acetone and both MWCNTs may be the result from chemisorption on the topological defects. The adsorption heats of trichloroethylene, benzene, and n-hexane are indicative of physisorption on the surfaces of both MWCNTs. CNT2 presents a higher adsorption capacity than CNT1 due to the existence of an exterior amorphous carbon layer on CNT2. The amorphous carbon enhances the adsorption capacity of organic chemicals on carbon nanotubes. The morphological and structure order of carbon nanotubes are the primary affects on the adsorption process of organic chemicals. (c) 2007 Elsevier B.V. All rights reserved.
Relation: Journal of Hazardous Materials
Appears in Collections:[依資料類型分類] 期刊論文

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