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首页> 外文会议>International Conference on Energy, Environment and Sustainable Development >Sol-Gel TiO_2 thin films sensitized with the natural botanical dyes
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Sol-Gel TiO_2 thin films sensitized with the natural botanical dyes

机译：溶胶 - 凝胶TiO_2用天然植物染料致敏的薄膜

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Given the low cost of their components and their demonstrated reliable efficiencies, dye-sensitized techniques based on the titanium dioxide (TiO_2) thin films have received much research attention in the past decade. The dye/TiO_2 thin films were prepared on glass fibers substrate by a dip-coating method combined with a sol-gel process and the photocatalytic of acetone was investigated in this study. The natural botanical dye of Gardenia jasminoides with absorption reflection intensity in 410-460 nm of liquid extraction was used to improve the photo absorbability under illumination of visible light source. Degradation of acetone under 420 nm light illumination was conducted to evaluate the photocatalytic ability of the dye/TiO_2 thin films. The SEM images evidence that fibers existed in the dye/nano-TiO_2 composites. The dye/TiO_2 thin films catalyst prepared in the laboratory showed photocatalytic performance with the degradation efficiency of 55% under 420 nm. A few percentages increase in removal efficiency when compared with the dye less TiO_2 thin films.
机译：鉴于其组分的低成本及其显示的可靠效率，基于二氧化钛（TiO_2）薄膜的染料敏化技术在过去十年中受到了很多研究的关注。通过将浸涂法在玻璃纤维基板上制备染料/ TiO_2薄膜，浸涂法与溶胶 - 凝胶工艺组合，并在本研究中研究了丙酮的光催化剂。使用410-460nm液体萃取中吸收反射强度的天然植物染料，用于改善可见光光源的照明下的光吸收性。进行420nm光照射下丙酮的降解以评估染料/ TiO_2薄膜的光催化能力。 SEM图像证据是染料中存在于染料/纳米TiO_2复合材料中的纤维。在实验室中制备的染料/ TiO_2薄膜催化剂显示光催化性能，降解效率为420nm以下的55％。与染料较少的染料相比，少数百分比提高了去除效率。

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