Functional Nanomaterials Laboratory, Center for Micro/Nanomaterials and Technology, and Key Laboratory of Photochemical Conversion and Optoelectronic Materials, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences , Zhongguancundonglu 29, Haidianqu, Beijing 100190, China.
University of the Chinese Academy of Sciences , Beijing 100049, China.
Langmuir. 2016 Dec 27;32(51):13611-13619. doi: 10.1021/acs.langmuir.6b03532. Epub 2016 Dec 14.
In the current work, a peroxo titanium complex (PTC) solution was used as a novel water-soluble precursor to fabricate HTiO·HO and the SiO/HTiO·HO-nanochain composite at low temperature (90-100 °C). The average width of HTiO·HO nanochains is 4.5 ± 1.5 nm. Under full-spectrum irradiation, the Si/Ti-nanochain composite showed good UV-visible light absorption and excellent photocatalytic activity, which is 2.8 times that of P25. In the composite, SiO not only contributes to the formation of nanochains and improves the catalytic performance of HTiO·HO but also reduces the refractive index of the complex. When coated on transparent organic substrates, the composite thin film exhibited excellent antireflective (as high as 99.3% on PC and 98.9% on PMMA) and self-cleaning properties. Pencil hardness, washing, and tape adhesion tests showed favorable adhesion-to-substrate and mechanical robustness of thin films, which make them extremely attractive for applications as highly transparent and self-cleaning thin films on lenses, photovoltaic cells, and windows of high-rise buildings.
在本工作中，采用过氧钛配合物（PTC）溶液作为一种新型的水溶性前体制备 HTiO·HO 和 SiO/HTiO·HO-纳米链复合材料，反应温度低（90-100°C）。HTiO·HO 纳米链的平均宽度为 4.5±1.5nm。在全光谱照射下，Si/Ti-纳米链复合材料表现出良好的紫外-可见光吸收和优异的光催化活性，是 P25 的 2.8 倍。在复合材料中，SiO 不仅有助于纳米链的形成并提高 HTiO·HO 的催化性能，而且还降低了复合物的折射率。当涂覆在透明有机基底上时，复合薄膜表现出优异的抗反射（在 PC 上高达 99.3%，在 PMMA 上高达 98.9%）和自清洁性能。铅笔硬度、洗涤和胶带附着力测试表明，薄膜具有良好的基底附着力和机械强度，这使得它们非常适合作为透镜、光伏电池和高层建筑窗户的高透明度和自清洁薄膜的应用。
