« Previous Abstract"Conserved mutations in the pneumococcal bacteriocin transporter gene, blpA, result in a complex population consisting of producers and cheaters"    Next AbstractEvidence for the existence of a sex pheromone in 2 species of ixodid ticks (Metastigmata: Ixodidae) »

Talanta

Title:		Affinity-based elimination of aromatic VOCs by highly crystalline multi-walled carbon nanotubes
Author(s):		Sone H; Fugetsu B; Tsukada T; Endo M;
Address:		"Graduate School of Environmental Science, Hokkaido University, Sapporo 060-0810, Japan"
Journal Title:		Talanta
Year:		2008
Volume:		20070907
Issue:		5
Page Number:		1265 - 1270
DOI:		10.1016/j.talanta.2007.08.041
ISSN/ISBN:		1873-3573 (Electronic) 0039-9140 (Linking)
Abstract:		"Carbon nanotubes (CNTs) are capable of adsorbing pollutant chemicals. Their adsorptive capacities and adsorbing mechanisms, however, are not fully understood. As-grown CNTs often contain both crystalline and amorphous carbon, and the ratio of carbon types can affect adsorption. In this study, highly crystalline multi-walled carbon nanotubes (HC-MWCNTs) were used as the adsorbent for volatile organic compounds (VOCs) in contaminated air samples. Air containing 23 added VOCs (1,1-dichloroethylene, dichloromethane, trans-1,2-dichloroethylene, cis-1,2-dichloroethylene, chloroform, 1,1,1-trichloroethane, carbon tetrachloride, 1,2-dichloroethane, benzene, trichloroethylene, 1,2-dichloropropane, bromodichloromethane, cis-1,3-dichloropropene, toluene, trans-1,3-dichloropropene, 1,1,2-trichloroethane, tetrachloroethylene, dibromochloromethane, m-xylene, p-xylene, o-xylene, bromoform, and p-dichlorobenzene) was used for model samples. Adsorptive experiments were carried out by passing the air samples through a cartridge packed with HC-MWCNTs. Initial results showing high selectivity and high affinity for adsorbing aromatic VOCs (benzene, toluene, m-xylene, p-xylene, o-xylene, and p-dichlorobenzene) have provided new insight into the adsorption mechanisms. Data suggest that the HC-MWCNTs, unlike conventional carbon materials, adsorb aromatic compounds according to Fukui's frontier theory, which is based on the interactions between the HOMO and LUMO of the aromatic VOCs and those of the HC-MWCNTs"
Keywords:		"Adsorption Air Pollutants/*isolation & purification Models, Molecular Nanotubes, Carbon/*chemistry Organic Chemicals/*isolation & purification Volatilization;"
Notes:		"MedlineSone, Hiroaki Fugetsu, Bunshi Tsukada, Takayuki Endo, Morinobu eng Research Support, Non-U.S. Gov't Netherlands 2008/03/29 Talanta. 2008 Feb 15; 74(5):1265-70. doi: 10.1016/j.talanta.2007.08.041. Epub 2007 Sep 7"