Department of Chemical Engineering, Federal University of Santa Maria, 97105-900, Santa Maria, RS, Brazil.
J Environ Manage. 2012 May 15;98:107-11. doi: 10.1016/j.jenvman.2011.12.029. Epub 2012 Jan 17.
The N-doped TiO(2) photocatalyst was prepared by calcination of a hydrolysis product composed of titanium (IV) isopropoxide with ammonia as the precipitator. X-ray diffraction, surface area, XPS and UV-vis spectra analyses showed a nanosized anatase structure and the appearance of a new absorption band in the visible region caused by nitrogen doping. The degradation of Direct Black 38 dye on the nitrogen-doped TiO(2) photocatalyst was investigated under visible light and sunlight irradiation. The N-doped anatase TiO(2) demonstrated excellent photocatalytic activity under visible light. Under sunlight irradiation, the N-doped sample showed slightly higher activity than that of the non-doped sample.
N 掺杂 TiO(2) 光催化剂是通过钛（IV）异丙醇盐与氨作为沉淀剂的水解产物煅烧制备的。X 射线衍射、比表面积、XPS 和紫外可见光谱分析表明，纳米锐钛矿结构和氮掺杂引起的可见光区新吸收带的出现。在可见光和太阳光照射下，研究了氮掺杂 TiO(2) 光催化剂对直接黑 38 染料的降解。氮掺杂锐钛矿 TiO(2) 在可见光下表现出优异的光催化活性。在太阳光照射下，掺杂样品的活性略高于未掺杂样品。
