Li Pei-Yu, Liu Hua-Wen, Chen Tai-Hong, Chang Chun-Hao, Lu Yi-Shan, Liu Day-Shan
Institute of Electro-Optical and Materials Science, National Formosa University, Huwei, Yunlin 63201, Taiwan.
ITRI South, Industrial Technology Research Institute, Liujia Shiang, Tainan 73445, Taiwan.
Materials (Basel). 2016 May 31;9(6):429. doi: 10.3390/ma9060429.
The photocatalytic activity of an amorphous titanium oxide (a-TiO) film was modified using a two-step deposition. The fluorinated base layer with a nano-textured surface prepared by a selective fluorination etching process acted as growth seeds in the subsequent a-TiO deposition. A nanorod-like microstructure was achievable from the resulting a-TiO film due to the self-assembled deposition. Compared to the a-TiO film directly deposited onto the untreated base layer, the rate constant of this fluorinate-free a-TiO film surface for decomposing methylene blue (MB) solution that was employed to assess the film's photocatalytic activity was markedly increased from 0.0076 min to 0.0267 min as a mechanism for the marked increase in the specific surface area.
采用两步沉积法对非晶态二氧化钛（a-TiO）薄膜的光催化活性进行了改性。通过选择性氟化蚀刻工艺制备的具有纳米纹理表面的氟化基层在随后的a-TiO沉积中充当生长晶种。由于自组装沉积，所得a-TiO薄膜可实现纳米棒状微观结构。与直接沉积在未处理基层上的a-TiO薄膜相比，用于评估薄膜光催化活性的该无氟a-TiO薄膜表面分解亚甲基蓝（MB）溶液的速率常数从0.0076 min显著提高到0.0267 min，这是比表面积显著增加的一种机制。
