Mills Andrew, Elliott Nicholas, Hill George, Fallis David, Durrant James R, Willis Richard L
Department of Pure & Applied Chemistry, University of Strathclyde, Thomas Graham Building, 295 Cathedral Street, Glasgow, UK G1 1XL.
Photochem Photobiol Sci. 2003 May;2(5):591-6. doi: 10.1039/b212865a.
The preparation and characterization of thick (9 microns), clear, mechanically robust and photocatalytically active films of nanocrystalline anatase titania are described. XRD and SEM analysis show the films comprise 13 nm particles of anatase TiO2. Thin (54 nm) films of the 'paste' TiO2, along with sol-gel titania films made by a more traditional route are also prepared and characterised. All titania films mediate the photocatalytic destruction of stearic acid with a quantum yield of 0.0016 +/- 0.0003, using either 365 nm (i.e. BLB) or 254 nm (germicidal) light. P25 TiO2 films also appear to mediate the same process with a similar formal quantum efficiency. Of all the films tested, the thick paste TiO2 films are the most ideally suited for use with near UV light, for reasons which are discussed. All the titania films tested exhibit photoinduced superhydrophilicity.
本文描述了厚（9微米）、透明、机械性能稳定且具有光催化活性的纳米晶锐钛矿型二氧化钛薄膜的制备与表征。X射线衍射（XRD）和扫描电子显微镜（SEM）分析表明，这些薄膜由13纳米的锐钛矿型TiO₂颗粒组成。同时还制备并表征了“浆料”TiO₂的薄（54纳米）膜以及通过更传统方法制备的溶胶 - 凝胶二氧化钛薄膜。所有二氧化钛薄膜都能介导硬脂酸的光催化分解，使用365纳米（即BLB）或254纳米（杀菌）光时，量子产率为0.0016±0.0003。P25 TiO₂薄膜似乎也以类似的形式量子效率介导相同的过程。在所有测试的薄膜中，厚浆料TiO₂薄膜最适合用于近紫外光，文中对此原因进行了讨论。所有测试的二氧化钛薄膜都表现出光致超亲水性。
