Preparation and properties of ce-doped TiO{sub 2} photocatalyst

Journal Article · Wed Aug 15 00:00:00 EDT 2012 · Materials Research Bulletin

DOI:https://doi.org/10.1016/J.MATERRESBULL.2012.04.077· OSTI ID:22215163

Yan, Ningning; Zhu, Zhongqi; Zhang, Jin ^[1]; Zhao, Zongyan ^[2]; Liu, Qingju ^[1]

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1. Yunnan Key Laboratory of Nanomaterials and Technology, Yunnan University, Kunming 650091 (China)
2. School of Materials Science and Engineering, Kunming University of Science and Technology, Kunming 650093 (China)

Highlights: ► The cerium ion doped TiO{sub 2} (Ce-TiO{sub 2}) powders were prepared and characterized. ► The spectrum absorption region of Ce-TiO{sub 2} is red-shifted to visible light. ► The recombination of photo-generated electron-hole pairs of Ce-TiO{sub 2} is inhibited. ► The photocatalytic activity was effected by Ce ion content and greatly improved. -- Abstract: TiO{sub 2} nanoparticles doped with different content of Ce ion were prepared by sol–gel method. The samples were characterized by XRD, XPS, TEM, UV–Vis, and PL, the photocatalytic activity was evaluated by photocatalytic degradation of methylene blue (MB) under the irradiation of fluorescent lamp. The results indicate that Ce ion is incorporated into the lattice of TiO{sub 2}, which can restrain the increase of grain size, broaden the absorption region to visible light, and inhibit the recombination of the photo-generated electron and hole pairs. Moreover, the photocatalytic activity of Ce-TiO{sub 2} in MB degradation is evidently enhanced. The MB degradation rate of the sample with Ce:Ti = 0.33% (molar ratio) in 8 h is 90.03%, which is much higher than that of P25 (68.19%).

• OSTI ID: 22215163
• Journal Information: Materials Research Bulletin, Vol. 47, Issue 8; Other Information: Copyright (c) 2012 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved.; Country of input: International Atomic Energy Agency (IAEA); ISSN 0025-5408
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC
ORGANIC
PHYSICAL AND ANALYTICAL CHEMISTRY
77 NANOSCIENCE AND NANOTECHNOLOGY
ABSORPTION
CERIUM IONS
DOPED MATERIALS
FLUORESCENT LAMPS
GRAIN SIZE
IRRADIATION
METHYLENE BLUE
NANOSTRUCTURES
POWDERS
TITANIUM OXIDES
TRANSMISSION ELECTRON MICROSCOPY
X-RAY DIFFRACTION
X-RAY PHOTOELECTRON SPECTROSCOPY