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Journal of Nanomaterials
Volume 2012, Article ID 405361, 5 pages
Research Article

Photocatalytic Degradation of Indoor Air Pollutants by Pt- T i O 2

Department of Cosmetic Application and Management, St. Mary’s Medicine, Nursing and Management College, No. 100, Lane 265, San-Shing Road, Sec.2, San-Shing Shiang, Yi-Lan 266, Taiwan

Received 12 April 2012; Accepted 16 July 2012

Academic Editor: Yanbao Zhao

Copyright © 2012 Gui Bing Hong and Chih Ming Ma. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.


Titanium dioxide (TiO2) has been extensively studied with regard to its application as the physical sunblock in sunscreen or other cosmetic products, as well as in environmental remediation processes. In this study, the Taguchi method was applied to determine the optimum gaseous DCM (dichloromethane) by Pt-TiO2 with different Pt contents. An orthogonal array (L32) experimental design that allows for the simultaneous investigation of the variations of six parameters (light source, catalyst type, initial concentration, retention time, photointensity, and relative humidity) was employed to determine the optimum levels. The value of photointensity was not at a confidence interval. According to the response values and an analysis of variance (ANOVA), an experimental result of 34.7 as the optimum condition is forecast. Although the predetermination of 34.7 is not equal to the experimental value, it is contained within the 90% confidence interval (25.8, 43.6).