Details

Autor(en) / Beteiligte

• Shen, Ming
• Wu, Zunyi
• Huang, Hui
• Du, Yukou
• Zou, Zhigang
• Yang, Ping

Titel

Carbon-doped anatase TiO2 obtained from TiC for photocatalysis under visible light irradiation

Ist Teil von

• Materials letters, 2006-03, Vol.60 (5), p.693-697

Erscheinungsjahr

2006

Quelle

Alma/SFX Local Collection

Beschreibungen/Notizen

• Carbon-doped anatase TiO2 (C-TiO2) was prepared by mild oxidation of TiC. The transformation of TiC to anatase TiO2 was complete when TiC was calcined in air at 350 C for 8 h. The as-prepared powders were characterised by XRD, SEM, UV-vis spectroscopy and BET adsorption measurement. The absorption spectrum of the C-TiO2 showed a stronger absorption in the UV-vis range and about 36 nm red shift of the spectrum onset compared with one of anatase TiO2 nanoparticles. The change of the spectra is attributed to about 0.7 wt% carbon substitutions at oxygen sites in the sample. Compared with nanocrystalline anatase TiO2, the C-doped TiO2 powders exhibited photoactivity to trichloroacetic acid (TCA) degradation under visible light irradiation. The effects of iron doping on the sample and the pH of the solution on the photodegradation of TCA were also investigated. 25 refs.