Linear solvation energy relationship applied to quantify the sorption role of selected volatile organic chemicals on carbon multiwall nanotubes

ENVR 142

Mei-syue Li, Department of Soil and Environmental Sciences, National Chung Hsing University, 250 Kuo-Kuang Rd., Taichung 402, Taiwan and Yang-hsin Shih, yhs@nchu.edu.tw, Department of Soil and Environmental Sciences and Center of Nanoscience and Nanotechnology, National Chung Hsing University, 250 Kuo-Kuang Rd., Taichung 402, Taiwan.
In order to improve the understanding of the mechanisms involved in the adsorption of volatile organic compounds (VOCs) on multi-walled carbon nanotubes (MWCNTs), a linear solvation energy relationship (LSER) approach has been used. Gas-solid partition coefficients at infinite dilution of 15 VOCs on two MWCNTs have been obtained by inverse gas chromatography. LSER equations were obtained by a multiple regression of the adsorption coefficients of 15 porbe sorbates against the solvation parameters of the sorbates. Analysis of the coefficients of the LSER equations shows that the main interactions involved in the adsorption process are general dispersion interactions and hydrogen bond interactions. Our understanding on the role of adsorption interactions of organic compounds on MWCNTs may be useful for the applications of MWCNTs in a VOCs removal system.
 

General Papers
6:00 PM-8:00 PM, Wednesday, August 22, 2007 BCEC -- Exhibit Hall - B2, Poster

Division of Environmental Chemistry

The 234th ACS National Meeting, Boston, MA, August 19-23, 2007