Synthesis and properties of (Yb, N)-TiO{sub 2} photocatalyst for degradation of methylene blue (MB) under visible light irradiation

Journal Article · Thu Oct 15 00:00:00 EDT 2015 · Materials Research Bulletin

DOI:https://doi.org/10.1016/J.MATERRESBULL.2015.04.060· OSTI ID:22475919

Zhang, J., E-mail: [e-mail] ^[1]; School of Physical Science and Technology, Yunnan University, Kunming 650091 ^[2]; Xu, L.J., E-mail: [e-mail] ^[1]; School of Physical Science and Technology, Yunnan University, Kunming 650091 ^[2]; Zhu, Z.Q., E-mail: [e-mail] ^[1]; School of Physical Science and Technology, Yunnan University, Kunming 650091 ^[2]; Liu, Q.J., E-mail: [e-mail] ^[1]

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1. Yunnan Key Laboratory of Micro/Nano Materials & Technology, Yunnan University, Kunming 650091 (China)
2. (China)

Highlights: • The (Yb, N)-TiO{sub 2} nanoparticles were prepared and characterized. • The spectrum absorption region of (Yb, N)-TiO{sub 2} is red-shifted to visible light. • The recombination of the photo-generated electron–hole pairs of (Yb, N)-TiO{sub 2} is suppressed. • The photocatalytic activity of (Yb, N)-TiO{sub 2} is more higher than that of TiO{sub 2}-P25, N-TiO{sub 2} and the Yb-TiO{sub 2}. - Abstract: (Yb, N)-TiO{sub 2} photocatalyst has been synthesized by sol–gel method combined with microwave chemical synthesis. Also, the efficiency of the (Yb, N)-TiO{sub 2} as a photocatalyst for the degradation of methylene blue (MB) using visible light irradiation has been evaluated. The prepared samples were characterized by XRD, TEM, XPS, UV–vis-DRS and PL. The results show that the (Yb, N)-TiO{sub 2} photocatalyst has the anatase TiO{sub 2} crystalline phase. The TEM micrograph demonstrated that the average particle size of the sample was about 12 nm. The band-gap energy absorption edge shifted to longer wavelength as compared to commercial TiO{sub 2}-P25, N-TiO{sub 2} and the Yb-TiO{sub 2} prepared by our group. Results of degradation revealed that the (Yb, N)-TiO{sub 2} has shown much more higher photocatalytic activity than that of the TiO{sub 2}-P25, the N-TiO{sub 2} and the Yb-TiO{sub 2} under the visible light.

• OSTI ID: 22475919
• Journal Information: Materials Research Bulletin, Vol. 70; Other Information: Copyright (c) 2015 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

77 NANOSCIENCE AND NANOTECHNOLOGY
CATALYSTS
DECOMPOSITION
ENERGY ABSORPTION
METHYLENE BLUE
NANOPARTICLES
NITROGEN ADDITIONS
PARTICLE SIZE
PHOTOCATALYSIS
RECOMBINATION
RED SHIFT
SOL-GEL PROCESS
SPECTRA
SYNTHESIS
TITANIUM OXIDES
TRANSMISSION ELECTRON MICROSCOPY
VISIBLE RADIATION
X-RAY DIFFRACTION
X-RAY PHOTOELECTRON SPECTROSCOPY
YTTERBIUM ADDITIONS