Investigation of PVB binder photo-degradation by nano-Titanium photo-catalyst in green ceramic body
碩士 === 元智大學 === 化學工程學系 === 93 === Solid-phase photocatalytic degradation of PVB (poly(vinyl butyral)) with nano-TiO2 as photocatalyst was investigated in the room temperature under ultraviolet light irradiation. Kinetic parameters of the composite sample were estimated by thermogravimetry (TG) mea...
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| Format: | Others |
| Language: | zh-TW |
| Published: |
2005
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| Online Access: | http://ndltd.ncl.edu.tw/handle/96632848923465767955 |
| Summary: | 碩士 === 元智大學 === 化學工程學系 === 93 === Solid-phase photocatalytic degradation of PVB (poly(vinyl butyral)) with nano-TiO2 as photocatalyst was investigated in the room temperature under ultraviolet light irradiation. Kinetic parameters of the composite sample were estimated by thermogravimetry (TG) measurements. Solid-phase photocatalytic reaction mechanism of PVB/TiO2 sample is conducted by diffuse reflectance Fourier transform spectroscopy (DRIFTS). The morphologies of irradiated PVB/TiO2 samples were carried out by using scanning electron microscope (SEM) and atomic forces microscope (AFM) analysis.
Results revealed that photo-degradation of PVB binder are removable. The kinetic analysis of the PVB photo-degradation was carried out. The PVB photo-degradation experiments exhibit that higher composition of TiO2, near distance of UV lighting; thinner coating films and the use of glass substrate can accelerate the degradation rate. In addition, the PVB photo-degradation rate can be increased when wet air condition was applied. Furthermore, the degradation mechanism was proposed from the analytical results.
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