Comparison Photocatalytic Effect of Laboratorymade or Commercial Bismuth Oxide Hybrid Titanium Dioxide to Treat Gaseous 1,2 Dichloroethane

• Main Authors: LEE,CHIEH, 李潔
• Other Authors: Kuo, Chao-Yin
• Format: Others
• Language: zh-TW
• Published: 2019
• Online Access: http://ndltd.ncl.edu.tw/handle/qb98rm

碩士 === 國立雲林科技大學 === 環境與安全衛生工程系 === 107 === Comparison between commercial and self-made bismuth oxide (Bi2O3)/titanium dioxide (TiO2) prepared to hybrid fixed catalyst on glass plate and explored their effect of photocatalysis by degrading 1,2-dichloroethane under sunlight. Multi-function X-ray Diffractometer (XRD), X-ray Photoelectron Spectroscopy (XPS) and Field Emission Scanning Electron Microscope (SEM) were measured to investigate crystal structure, elemental composition and surface morphology and using UV-vis analysis to explore the availability of visible light. There was no chemical variation in the crystal form, element composition and surface morphology of the Bi2O3/TiO2 hybrid catalyst in this study. In the absorption wavelength analysis, it showed shifting to the red band which was beneficial using visible light. In the photocatalytic degradation, comparison with the oxygen-rich contented 30% and anaerobic non-oxygen contented 0% degraded 1,2-dichloroethane. The results showed that 1 mole% of self-made Bi2O3 hybrid TiO2 exited the best effect in all the other mole% of this study with the anaerobic environment. The degradation rate of self-made Bi2O3 and 1 mole% of self-made Bi2O3 hybrid TiO2 were increased from 26.49% to 87.48% indicating the effectiveness of hybrid photocatalyst. In fourier-transform infrared spectroscopy (FTIR) analysis, it was found ethane, formic acid, carbon dioxide, water vapor and a little hydrochloric acid. Thus, it confirmed that the water vapor provided a photo reduction of dechlorination of the target pollutant. To sum up, the self-made Bi2O3/TiO2 catalyst successfully prepared and it could use the visible light and extend recombination time of electron and hole to improve the photocatalytic effect.