Evaluation of the Sorbent Properties of Single- and Multiwalled Carbon Nanotubes for Volatile Organic Compounds through Thermal Desorption-Gas Chromatography/Mass Spectrometry

Carbon nanotubes (CNTs) possess well-defined structuraland chemicalcharacteristics coupled with alarge surface area that makes them ideal as sorbent materials for applicationswhere adsorption processes are required. The adsorption properties of carboxylated derivatives of multiwalled carbon nanotube...

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Published inCollection of Czechoslovak chemical communications Vol. 80; no. 8; p. 1279
Main Authors Wong, Gwendeline K S, Lim, Li Zhen, Lim, Marcus Jun Wen, Ong, Li Lin, Khezri, Bahareh, Pumera, Martin, Webster, Richard D
Format Journal Article
LanguageEnglish
Published Prague Blackwell Publishing Ltd 01.08.2015
Subjects
Aqueous solutions
Chemistry
Chromatography
Mass spectrometry
Nanotubes
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Summary:Carbon nanotubes (CNTs) possess well-defined structuraland chemicalcharacteristics coupled with alarge surface area that makes them ideal as sorbent materials for applicationswhere adsorption processes are required. The adsorption properties of carboxylated derivatives of multiwalled carbon nanotubes (COOH-MWCNT) and singlewalled carbon nanotubes (COOHSWCNT),together with their nonfunctionalized counterparts (MWCNT and SWCNT) for 48 common atmospheric volatile organic compounds (VOCs) were determined using thermal desorption-gas chromatography/mass spectrometry (TD-GCMS). The CNTsexhibited similarrecoveries for many of the VOCs compared to the standard sorbentmaterials, Carbopack Xand Tenax TA.However,VOCs with electron donor-acceptor (EDA) properties such as carbonyls, alkenes, and alcohols exhibited poorer recoveries on all CNTscompared to Carbopack Xand Tenax TA.The poor recoveries of VOCs from the CNTshas importantimplications for the long termuse and storageof CNTs, because it demonstrates that they will become progressively more contaminated with common atmosphericVOCs, therefore potentially affecting their surface-based properties.
ISSN:2192-6506