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Multiple nano-TiO_2 layers to prevent dyeano-TiO_2 from photodegradation under a UV-exposure environment

机译:多层纳米TiO_2层可防止染料/纳米TiO_2在紫外线照射下发生光降解

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摘要

A device of multiple nano-TiO_2 layers was proposed and fabricated to prevent a dyeano-TiO_2 region from serious photo-degradation. In this device, the top of the dye/TiO_2 region was designed to be coated using sol-gel nano-TiO_2 thin films to shield UV irradiation from the photo-degradation effect. The sol-gel TiO_2 was prepared in a low temperature (75℃) and verified as nano-sized particles and an anatase crystalline structure. Different devices of the multi-layer samples fabricated using different compositions of nano-TiO_2 were produced and exposed for UV irradiation tests. Results show that the presence of the sol-gel TiO_2 films coated on top of the dye/TiO_2 region can significantly alleviate the dye photo-degradation under UV irradiation. This multi-layer device can effectively improve the photo-stability of the dye/TiO_2 region in a UV-exposure environment.
机译:提出并制造了多层纳米TiO_2层的装置,以防止染料/纳米TiO_2区域严重的光降解。在该装置中,染料/ TiO_2区域的顶部设计为使用溶胶-凝胶纳米TiO_2薄膜进行涂覆,以防止紫外线辐射受到光降解作用的影响。溶胶-凝胶法制备的TiO_2是在低温(75℃)下制备的,经验证为纳米级颗粒和锐钛矿型晶体结构。制备了使用不同组成的纳米TiO_2制造的多层样品的不同设备,并对其进行了紫外线辐射测试。结果表明,涂​​在染料/ TiO_2区域顶部的溶胶-凝胶TiO_2薄膜的存在可以明显减轻染料在紫外线照射下的光降解。该多层装置可以有效地提高在紫外线曝光环境下染料/ TiO_2区域的光稳定性。

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