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Abstract - Issue May 2015, 36 (3) Back
nstantaneous and historical temperature effects on a-pinene
Removal
of VOCs by photocatalytic oxidation using
nano-TiO2/PLA
biocomposite
Chaisri
Tharasawatpipat1, Kowit Suwannahong2, Jittiporn Kruenate3
and Torpong Kreetachat1*
1Department of
Environmental Engineering, School of Energy and Environment, University of
Phayao, Phayao 56000, Thailand
2Department of
Public Health, Faculty of Public Health, Western University, Kanchanaburi
71170, Thailand
3PTT Global
Chemical Public Company Limited, Chatuchak, Bangkok 10900, Thailand
*Corresponding
Author?s E-mail: torpong.kr@up.ac.th
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Publication
Data
Paper received:
25 June 2013
Revised received:
15 April 2014
Accepted:
28 April 2014
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Abstract
Poly
(lactic acid) or PLA has been challenging as one of the most recognizable
biopolymer for more than a decade since it has been readily fabricated as
biocomposite film. In the present study, biocomposite film, which composed of
PLA and nano-TiO2 particles, were used as a carrier to modify
volatile organic compound (VOCs) removal efficiency by photocatalytic
oxidation, using the nano-TiO2/PLA biocomposite film as a
photocatalyst. Since the amount of nano-TiO2 affected the
efficiency of photocatalytic activity, the present study mainly focused at
the effort to embed high amount of nano-TiO2 in PLA matrix.
Therefore, the developed nano-TiO2/PLA biocomposite films were
characterized for physical properties by Scanning Electron Microscope (SEM),UV-VIS
spectrophotometer, and X-ray diffractometer (XRD). The SEM images revealed
the presence of high homogeneity of the deposition of nano-TiO2 on
PLA matrix. The XRD patterns interpreted that the nano-TiO2
embedded in PLA matrix exhibited mainly in anatase form. In addition,
photodegradation results showed that DCM removal efficiencies were 41.2%,
63.4% and 49.1% when using the nano-TiO2/PLA biocomposite films
loading at TiO25.0%, 10.0% and 15.0%wt.cat./wt.film.,
respectively. The present study emphasises the use of Nato-TiO2/PLA
as promising photo catalyst for degradation of VOC.
Key
words
Photocatalytic
oxidation, Dichloromethane, Nano-TiO2/PLA biocomposite film
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