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TiO2 thin-films on polymer substrates and their photocatalytic activity

Title
TiO2 thin-films on polymer substrates and their photocatalytic activity
Authors
Yang J.-H.Han Y.-S.Choy J.-H.
Ewha Authors
최진호양재훈
SCOPUS Author ID
최진호scopus; 양재훈scopus
Issue Date
2006
Journal Title
Thin Solid Films
ISSN
0040-6090JCR Link
Citation
vol. 495, no. 1-2, pp. 266 - 271
Indexed
SCI; SCIE; SCOPUS WOS scopus
Abstract
We have developed dip-coating process for TiO2-thin film on polymer substrates (acrylonitrile-butadiene-styrene polymer: ABS, polystyrene: PS). At first, a monodispersed and transparent TiO2 nano-sol solution was prepared by the controlled hydrolysis of titanium iso-propoxide in the presence of acetylacetone and nitric acid catalyst at 80 °C. Powder X-ray diffraction patterns of the dried particles are indicative of crystalline TiO2 with anatase-type structure. According to the XRD and transmission electron microscopy (TEM) studies, the mean particle size was estimated to be ca. 5 nm. The transparent thin films on ABS and PS substrates were fabricated by dip-coating process by changing the processing variables, such as the number of dip-coating and TiO2 concentration in nano-sol solution. Scanning electron microscopic (SEM) analysis for the thin film samples reveals that the acetylacetone-modified TiO2 nano-sol particles are effective for enhancing the interfacial adherence between films and polymeric substrates compared to the unmodified one. Photocatalytic degradation of methylene blue (MB) on the TiO2 thin-films has also been systematically investigated. © 2005 Elsevier B.V. All rights reserved.
DOI
10.1016/j.tsf.2005.08.195
Appears in Collections:
자연과학대학 > 화학·나노과학전공 > Journal papers
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