Date:

2025-04-30

Title of Paper:

Preparation of La3+, carbon nanotube doped nanometer TiO2 with sol-gel method and photocatalytic activity of doped nanometer TiO2

Journal:

Journal of Xi'an Jiaotong University

Summary:

Three kinds of doped TiO2 particles, include La3+ doped, multi-wall carbon nanotube (MWCNT) doped and their co-doped TiO2, were prepared by sol-gel method. The catalytic activity of doped TiO2 was evaluated via ultraviolet light degradation experiments of methyl orange. It is found that La3+ doped TiO2 particles demonstrates a higher photocatalytic activity than that of pure TiO2, and an optimum value is reached at doped concentration of 0. 08% (mole fraction). CNT doped TiO2 can also improve the photocatalytic activity of TiO2. Besides, TiO2 particles co- doped with La3+ and CNT show the highest photocatalytic activity. As for co-doped TiO2, the decomposition ratio of methyl orange solution reaches 84% in 1 h, while it gets 53% for pure TiO2. The microstructure of the particles is characterized with XRD and TEM techniques. These particles are endowed with anatase crystal phase of about 8-25 nm diameter.

Co-author:

Guo Xiusheng; Yu Demei; Zhang Ning; Bofeng, W.; Qiao Chunmiao; Xie Yunchuan; Wan

Translation or Not:

No

Date of Publication:

2008-10-01