Nano TiO2 photocatalyst applied in different substrates for decomposing VOCs.

• Main Authors: Tseng,Wei Hsiang, 曾暐翔
• Other Authors: Lee,Yao Chuan
• Format: Others
• Language: zh-TW
• Published: 2012
• Online Access: http://ndltd.ncl.edu.tw/handle/82596163005713732584

碩士 === 東南科技大學 === 防災科技研究所 === 100 === In this study, coating titanium dioxide thin films on different substrates for photocatalytic degradation of volatile organic compounds is investigated. Two types of coating substrates are chosen, filtrating stainless steel mesh and denuder type glass tube. The photocatalytic materials are surrounded the UV lamp and filled in the reactor. Titanium dioxide thin films are coated by sol-gel technology at room temperature. In order to observe the structures and morphological characteristics of TiO2 thin film, X-ray diffractometer, scanning electron microscopy, energy dispersive spectrometer were executed. Testing VOC sample preparation module in this study is acetone, and was analyzed by minirae 2000 to detect concentration variation under each experiment conditions. Controlling the factors including gas flow rate and concentration of acetone, assessment of degradation efficiencies of the photocatalytic reactions were observed. Results showed that TiO2 thin films are successful attached to both the surfaces of these two kinds of substrates. The anatase, nano-sized TiO2 demonstrated a high catalytic efficiency by wavelength 365nm UV lamp radiation. Degradation efficiencies of volatile organic compounds of these two kinds of TiO2 thin fil L/min ubstrate material were also compared.