School of Chemical and Biomedical Engineering, Nanyang Technological University, 62 Nanyang Drive, Singapore.
Nanoscale. 2010 Jul;2(7):1122-7. doi: 10.1039/c0nr00105h. Epub 2010 May 15.
A novel and environmental friendly method was developed to prepare transparent, uniform, crack-free and visible light activated nitrogen doped (N-doped) titania thin films without the use of organic Ti precursors and organic solvents. The N-doped titania films were prepared from heating aqueous peroxotitanate thin films deposited uniformly on superhydrophilic uncoated glass substrates. The pure glass substrates were superhydrophilic after being heated at 500 degrees C for 1 h. Nitrogen concentrations in the titania films were adjusted by changing the amount of ammonia solution. The optimal photocatalytic activity of the N-doped titania films was about 14 times higher than that of a commercial self-cleaning glass under the same visible light illumination. The current reported preparative technique is generally applicable for the preparation of other thin films.
开发了一种新颖且环保的方法，用于制备透明、均匀、无裂纹且可见光激活的氮掺杂（N 掺杂）二氧化钛薄膜，而无需使用有机 Ti 前体和有机溶剂。通过加热均匀沉积在超亲水无涂层玻璃基底上的过氧钛酸盐薄膜来制备 N 掺杂的二氧化钛薄膜。将纯玻璃基底在 500°C 下加热 1 小时后，基底变为超亲水。通过改变氨水溶液的量来调节二氧化钛薄膜中的氮浓度。在相同可见光照射下，N 掺杂二氧化钛薄膜的最佳光催化活性比商用自清洁玻璃高约 14 倍。目前报道的制备技术通常适用于其他薄膜的制备。
