Preparation of N-doped and oxygen-deficient TiO2 microspheres via a novel electron beam-assisted method.
- Resource Type
- Article
- Authors
- Pu, Xianjuan; Hu, Yiyang; Cui, Shicong; Cheng, Lingli; Jiao, Zheng
- Source
- Solid State Sciences. Aug2017, Vol. 70, p66-73. 8p.
- Subject
- *TITANIUM dioxide
*ELECTRON beams
*VISIBLE spectra
*PHOTOCATALYSIS
*NITROGEN
*DOPED semiconductors
*NANOSTRUCTURED materials
- Language
- ISSN
- 1293-2558
Nitrogen-doped and oxygen-deficient TiO 2 microspheres (NT) with large specific surface were prepared by a solvothermal method and following with electron beam (EB) irradiation under various doses (140–500 kGy). XPS results show that under the EB irradiation, nitrogen ions have been doped into the TiO 2 lattice successfully, as well as part of Ti 4+ on the surface of the samples changed to Ti 3+ . Photocatalytic performance was tested by decomposing Rhodamine B in the aqueous phase under visible light irradiation. The prepared materials under the EB irradiation at dose of 140 kGy (NT-140) exhibit the best visible light photocatalytic activity. It is attributed to the large specific surface (138.4 m 2 /g) and a synergistic effect between substitutional nitrogen dopants and oxygen defects in NT-140. The results obtained may provide a new sight for the application of EB-assisted preparation of nanomaterials. [ABSTRACT FROM AUTHOR]