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J Hazard Mater

Title:		Characterization of volatile organic compound adsorption on multiwall carbon nanotubes under different levels of relative humidity using linear solvation energy relationship
Author(s):		Li MS; Wu SC; Shih YH;
Address:		"Department of Agricultural Chemistry, National Taiwan University, Taipei 106, Taiwan. Department of Agricultural Chemistry, National Taiwan University, Taipei 106, Taiwan. Electronic address: yhs@ntu.edu.tw"
Journal Title:		J Hazard Mater
Year:		2016
Volume:		20160406
Issue:
Page Number:		35 - 41
DOI:		10.1016/j.jhazmat.2016.04.004
ISSN/ISBN:		1873-3336 (Electronic) 0304-3894 (Linking)
Abstract:		"Multiwall carbon nanotubes (MWCNTs) have been used as an adsorbent for evaluating the gas/solid partitioning of selected volatile organic compounds (VOCs). In this study, 15 VOCs were probed to determine their gas/solid partitioning coefficient (LogKd) using inverse gas chromatography at different relative humidity (RH) levels. Interactions between MWCNTs and VOCs were analyzed by regressing the observed LogKd with the linear solvation energy relationship (LSER). The results demonstrate that the MWCNT carbonyl and carboxyl groups provide high adsorption capacity for the VOCs (LogKd 3.72-5.24g/kg/g/L) because of the pi-/n-electron pair interactions and hydrogen-bond acidity. The increasing RH gradually decreased the LogKd and shifted the interactions to dipolarity/polarizability, hydrogen-bond basicity, and cavity formation. The derived LSER equations provided adequate fits of LogKd, which is useful for VOC-removal processes and fate prediction of VOC contaminants by MWCNT adsorption in the environment"
Keywords:		Hydrogen-bond Linear solvation energy relationship Multiwall carbon nanotubes Relative humidity Volatile organic compounds;
Notes:		"PubMed-not-MEDLINELi, Mei-Syue Wu, Siang Chen Shih, Yang-Hsin eng Research Support, Non-U.S. Gov't Netherlands 2016/05/07 J Hazard Mater. 2016 Sep 5; 315:35-41. doi: 10.1016/j.jhazmat.2016.04.004. Epub 2016 Apr 6"