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Fabrication of Photocatalytic TiO2 thin Film Using Aerosol Deposition Method and its Filtration Characteristics  

Choi, Wonyoul (강릉원주대학교 금속재료공학과)
Lee, Jinwoo (강릉원주대학교 토목공학과 대학원)
Kim, Shijun (한국폐기물협회)
Kim, Jongoh (강릉원주대학교 토목공학과)
Publication Information
Journal of the Korean GEO-environmental Society / v.11, no.1, 2010 , pp. 5-11 More about this Journal
Abstract
The objective of this study is to evaluate the effect of operational parameters such as rotation speed and vibrating milling time for the fabrication of photocatalytic $TiO_2$ thin film using aerosol deposition methods. $TiO_2$ powders produced in the range of 1,000-3,000 rpm of rotation speed of centrifugal separator are ineffective on the fabrication of $TiO_2$ thin film by aerosol deposition due to the problem of nozzle powder jam. $TiO_2$ powders controlled by vibrating milling had about 420 nm of average diameter after 2 hr of vibrating milling time. The result of XRD analysis indicated that $TiO_2$ powders had a anatase phase. Vibrating milling methods was considered to be an effective pre-treatment process for $TiO_2$ powder control. Consequently $TiO_2$ photocatalytic thin film with dispersion of anatase crystallites controled by vibrating milling was successfully fabricated by aerosol deposition. The permeation flux of $TiO_2$ photocatalytic thin film with the immobilized $TiO_2$ powder was higher than that of suspended $TiO_2$ powder. Therefore, $TiO_2$ photocatalytic thin film promises to be one of the effective methods for enhancing filtration performance for the treatment of organic pollutants.
Keywords
Aerosol deposition; $TiO_2$ thin film; Vibrating milling; Photocatalytic; Filtration;
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Times Cited By KSCI : 1  (Citation Analysis)
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