Nb, F-codoped TiO2 Hollow Spheres with High Visible Light Photocatalytic Activity

Overview

Journal Nanoscale Res Lett

Publisher Springer

Specialty Biotechnology

Date 2013 Dec 6

PMID 24305040

Citations 2

Authors

Mingqi Gao

Youlong Xu

Yang Bai

Fang Xiao

Affiliations

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Abstract

Nb, F-codoped TiO2 hollow spheres (NFTSs) were successfully synthesized via a hydrothermal method with niobium oxide, hydrofluoric acid, and tetrabutyl titanate. The obtained spheres were hollow, with a diameter of about 2 μm, and the sphere wall was made up of nanorods arranged close together. The NFTSs presented anatase phase with more {001} facets exposed, which could be mainly attributed to F ions which were preferentially adsorbed on the {001} facets during the crystal growth process. Ti3+ states in NFTSs were increased due to Nb, F-codoping, resulting in the decrease of the band gap and the red shift of the absorption edge of the NFTSs. The NFTSs exhibited 20.1% higher photocatalytic speed compared to P25 on the degradation of methylene orange.

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References

Mattsson A, Leideborg M, Larsson K, Westin G, Osterlund L . Adsorption and solar light decomposition of acetone on anatase TiO2 and niobium doped TiO2 thin films. J Phys Chem B. 2006; 110(3):1210-20. DOI: 10.1021/jp055656z. View

Han X, Kuang Q, Jin M, Xie Z, Zheng L . Synthesis of titania nanosheets with a high percentage of exposed (001) facets and related photocatalytic properties. J Am Chem Soc. 2009; 131(9):3152-3. DOI: 10.1021/ja8092373. View

Yang H, Liu G, Qiao S, Sun C, Jin Y, Smith S . Solvothermal synthesis and photoreactivity of anatase TiO(2) nanosheets with dominant {001} facets. J Am Chem Soc. 2009; 131(11):4078-83. DOI: 10.1021/ja808790p. View

Xu C, Song Y, Lu L, Cheng C, Liu D, Fang X . Electrochemically hydrogenated TiO2 nanotubes with improved photoelectrochemical water splitting performance. Nanoscale Res Lett. 2013; 8(1):391. PMC: 3973816. DOI: 10.1186/1556-276X-8-391. View

Li H, Bian Z, Zhu J, Zhang D, Li G, Huo Y . Mesoporous titania spheres with tunable chamber stucture and enhanced photocatalytic activity. J Am Chem Soc. 2007; 129(27):8406-7. DOI: 10.1021/ja072191c. View