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http://dx.doi.org/10.4313/JKEM.2005.18.6.510

Excitation Light Source Dependence of Photo-catalytic Efficiency for Benzene Removal  

Choi, Yong-Seok ((주)이츠웰 부설연구소)
Kim, Seong-Jin ((주)이츠웰 부설연구소)
Han, Young-Heon ((주)이츠웰 부설연구소)
Yu, Soon-Jae (선문대학교 전자정보통신공학부)
Lee, Eun-Ah (선문대학교 화학공학과)
Kim, Hak-Soo (선문대학교 화학공학과)
Kim, Song-Gang (중부대학교 정보통신학과)
Publication Information
Journal of the Korean Institute of Electrical and Electronic Material Engineers / v.18, no.6, 2005 , pp. 510-514 More about this Journal
Abstract
We have investigated the excitation-light source dependence of photo-catalytic efficiency for the benzene removal. The photo-catalytic module for the benzene removal is fabricated by a combination of GaN-based ultraviolet light-emitting diode (UV GaN-LED) and $TiO_2$ thin film coated on an aluminum plate. The benzene reduction rates of 365 nm and 375 nm modules at 60 mA junction current are approximately $8.95\;\%/Hr$ and $9.2\;\%/Hr$, respectively, which indicates that 365 nm GaN-LED is more effective than 375 nm GaN-LED. The benzene reduction efficiency is also noticeably dependent on the excitation wavelength and excitation-light power, as well as it is increased with the shorter wavelength and higher excitation power. This result exhibits that UV GaN-LED is useful to remove the volatile organic compounds (VOCs) existing in the environment.
Keywords
UV GaN-LED; Volatile organic compound; Benzene; Photo-catalytic;
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