摘要
Nanocrystalline titania was prepared by the homogeneous-precipitation method at temperature lower than 120℃. The properties of powders were identified by XRD,TEM and diffuse reflection spectra.The results showed that rutile titania formed at 70℃without calcination in air.Nanometer rutile TiO_2 had good crystalline and small particle size.The formation mechanism of rutile was also discussed.The photocatalytic activity of the prepared particles was tested for the degradation of methyl orange.The photocatalytic activity of rutile TiO_2 was higher than those obtained from Degussa P-25 TiO_2.The reasons for high photocatalytic activity of futile were discussed.
Nanocrystalline titania was prepared by the homogeneous-precipitation method at temperature lower than 120℃. The properties of powders were identified by XRD, TEM and diffuse reflection spectra. The results showed that rutile titania formed at 70℃ without calcination in air. Nanometer rutile TiO2 had good crystalline and small particle size. The formation mechanism of rutile was also discussed. The photocatalytic activity of the prepared particles was tested for the degradation of methyl orange. The photocatalytic activity ofrutile TiO2 was higher than those obtained from Degussa P-25 TiO2. The reasons for high photocatalytic activity of rutile were discussed.
出处
《稀有金属材料与工程》
SCIE
EI
CAS
CSCD
北大核心
2006年第A03期396-399,共4页
Rare Metal Materials and Engineering
基金
The present research was supported by the High Technology and Development Project of the China （Grant：2003AA302320）
National Natural Science Foundation of China （Grant：50021009）
Basic Research Foundation of Tsinghua University （JC200206）.
