The Study of Photo-deposition of Nano-Gold on Various types of TiO2 for CO Oxidation Application

• Main Authors: Chun-Hao Pan, 潘軍豪
• Other Authors: 楊重光
• Format: Others
• Language: zh-TW
• Online Access: http://ndltd.ncl.edu.tw/handle/5jwv48

碩士 === 國立臺北科技大學 === 化學工程與生物科技系化學工程碩士班（碩士在職專班） === 104 === In this study, there are four types Titanium dioxide that we made which are Anatase-sphere, Anatase-cubic, Rutile-sphere and Rutile-cubic. The nano-Gold was deposited on these Titanium dioxide by photo-deposition method under irradiation of LED light equipped with various wavelength. The TiO2 and nano-Gold catalyst were characterized by X-ray Diffraction (XRD) to define crystalline structure, morphologies and particle size of the sample were determined by Transmission Electron Microscopy (TEM), bang gap was measured by UV/VIS, element composition and chemical states were characterized by Electron Spectroscopy Chemical Analysis (ESCA) and the content of gold was quantified by Electron Probe X-ray Micro-Analyzer (EMPA). The gas chromatography (GC) was used to evaluate the CO conversion of catalysts at room iii temperature. To examine these catalysts, Fourier transform infrared spectroscopy (FTIR) coupled with diffuse reflectance (DRIFT) sampling accessory was used to study the mechanism of CO oxidation. The result showed that the gold content in Anatase is more than Rutile; the particle size of gold in Anatase is smaller than in Rutile; the rate of Au0 and Au3+ is Au0 occupied in Anatase more than Au0 occupied in Rutile. So CO conversion of Anatase is better than Rutile. Also, the result impacts the CO conversion of sphere and cubic.