UV Resistance of γ-Glycidoxypropyltrimethoxysilane / TiO₂-ZrO₂ Hybrid Nanocomposite Films Prepared by Sol-Gel Method

Abstract:

UV resistance of hybrid nanocomposite films of γ-Glycidoxypropyltrimethoxysilane (GPTMS)/TiO₂-ZrO₂ prepared by Tetrabutoxytitanate, Zirconium n-tetrabutanoxide and GPTMS via sol-gel method were analyzed by observation of the film appearance, thermal gravimetric analysis (TGA), UV-visible spectroscopy, Fourier transform infrared spectroscopy (FTIR) before and after UV irradiation. It was found that cracks on the hybrid films increase with irradiation time, total inorganic content and the content of TiO₂. The transmittance of the hybrid film increased with the increase of ZrO₂ content, which blocks part of the photo catalysis effect of TiO₂. When the ZrO₂ content increased to equal with TiO2, UV resistance of the hybrid film approaches that of pure ZrO2. The irregular behavior of yellow index data indicates that the deterioration in transmittance is caused by cracks mainly. FTIR results show that the hybrid film of TiO₂/ZrO₂(3/1) (T₃Z) still retains a stronger photo catalysis effect, after UV irradiation, the peak indicating the concentration of –OH enlarged greatly, while that of the pure ZrO₂ hybrid film remains unchanged.

• Periodical: Advanced Materials Research (Volumes 557-559)
• Pages: 538-543
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.557-559.538
• Online since: July 2012
• Authors: Yan Ping Yue, Min Huang, Yuan Qi Jiao, Xing Rong Zeng, Zhi Meng Liu, Yu Ping Liu, Xiao Dan Lin
• Keywords: Hybrid Material, Photocatalysis, TiO₂, UV Resistance, Yellow Index, Zro₂

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