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Bulletin of the Korean Chemical Society (BKCS)

ISSN 0253-2964(Print)
ISSN 1229-5949(Online)
Volume 31, Number 8
BKCSDE 31(8)
August 20, 2010 

Interaction of TiO2 Films on Carbon Fibers with Toluene
Hyun Ook Seo, Kwang Dae Kim, Yuan Luo, Myoung Joo Kim, Nilay Kumar Dey, Young Dok Kim*
Thin films, Chemical vapour deposition, TiO2, C fiber, Volatile organic compound (VOC)
TiO2 thin films were synthesized on carbon fibers using chemical vapor deposition. We show that these films can exhibit extraordinarily high absorption capacities of toluene vapor. Such an absorption phenomenon of toluene at room temperature was not found for other TiO2 samples. Upon toluene absorption change in the color (darkening) of the film was found, indicating that these films can be used as an indicator of the existence of volatile organic compounds in the indoor environments. By X-ray Photoelectron Spectroscopy (XPS) and Scanning Electron Microscopy (SEM), a high concentration of OH species and a unique layered structure were found for the TiO2 films and these could be related to their high absorption capacity of toluene.
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