摘要
Abstract
C,N co-doped TiO2 were successful y prepared with titanium tetrachloride, glucose and urea by a low-temperature one-step method in alcohol aqueous solution and water, respectively. The samples were characterized by X-ray diffraction (XRD), UV-Vis diffuse reflectance spectroscopy (UV-Vis), BET specific surface area and transmission electron microscope (TEM) determination. It was found from XRD patterns that the solvent type played more important role than ion type, and the crystal ite sizes of perepared samples were less than 10 nm. And the crystal ite sizes of samples prepared in alcohol aqueous solution were much smal er than those in water. The UV-Vis diffuse reflectance spectra of samples showed a shift to the absorption in the visible region, and it was particularly significant for C doped and C/N co-doped TiO2 samples. BET determi-nation indicated that al samples had large special surface area. The photocatalytic performance of C/N-TiO2 un-der visible light was evaluated by the degradation of rhodamine B and phenol. The photocatalytic activity of C/N-TiO2 was more effective than P25, and moreover, the C/N-TiO2 prepared in alcohol aqueous solution showed higher efficiency than those prepared in water.关键词
共掺杂/二氧化钛/光催化/罗丹明B/苯酚Key words
co-doping/titanium dioxide/photocatalysis/rhodamine B/phenol分类
化学化工
