Huang Yu, Ho Wingkei, Lee Shuncheng, Zhang Lizhi, Li Guisheng, Yu Jimmy C
Department of Civil and Structural Engineering, Research Center for Environmental Technology and Management, The Hong Kong Polytechnic University, Hong Kong, China.
Langmuir. 2008 Apr 1;24(7):3510-6. doi: 10.1021/la703333z. Epub 2008 Feb 22.
Effective mesoporous nanocrystalline C-doped TiO(2) photocatalysts were synthesized through a direct solution-phase carbonization using titanium tetrachloride and diethanolamine as precursors. X-ray photoelectron spectroscopy (XPS) results revealed that oxygen sites in the TiO(2) lattice were substituted by carbon atoms and formed a C-Ti-O-C structure. The absorption region of the as-prepared TiO(2) was extended to the visible light region in view of the substitution for oxygen sites by carbon atoms. The photocatalytic activities of the as-prepared samples were tested in a flow system on the degradation of NO at typical indoor air levels under simulated solar-light irradiation. The samples showed a more effective removal efficiency than commercial photocatalyst (P25) on the degradation of the common indoor pollutant NO. The parameters significantly affecting the mesoporous structure and removal efficiency on indoor air were also investigated.
通过以四氯化钛和二乙醇胺为前驱体的直接溶液相碳化法合成了高效的介孔纳米晶碳掺杂二氧化钛光催化剂。X射线光电子能谱（XPS）结果表明，二氧化钛晶格中的氧位点被碳原子取代，形成了C-Ti-O-C结构。鉴于碳原子对氧位点的取代，所制备的二氧化钛的吸收区域扩展到了可见光区域。在流动系统中，在模拟太阳光照射下，对所制备样品在典型室内空气水平下对NO的降解进行了光催化活性测试。在降解常见室内污染物NO方面，这些样品显示出比商业光催化剂（P25）更有效的去除效率。还研究了对介孔结构和室内空气去除效率有显著影响的参数。
