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Journal of Inorganic Materials

Journal of Inorganic Materials >

2008 , Vol. 23 >Issue 5: 1085 - 1088

DOI: https://doi.org/10.3724/SP.J.1077.2008.01085

Research Paper

Preparation and Photocatalysis Activity of Eu2+/Gd3+ codoped Nano-TiO2 Multiplex Photocatalyst from Sol-Gel Process Catalyzed with Acid

  • ZHOU Yi ,
  • HUANG Ke-Long ,
  • ZHU Zhi-Ping ,
  • YANG Bo ,
  • XIA Chang-Bin ,
  • XIAO Han-Ning
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  • 1. College of Chemistry and Chemical Engineering, Central South University, Changsha 410083, China; 2. College of Chemistry and Environment Engineering, Changsha University of Science and Technology, Changsha 410076, China

Received date: 2008-01-03

  Revised date: 2008-05-29

  Online published: 2008-09-20

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Abstract

A new nano-TiO2 multiplex photocatalyst codoped with Eu2+ and Gd3+ was prepared by a modified acidic sol-gel process. TEM and XRD results demonstrate that as-produced samples are anatase structure, and the crystallite size has relationship
only with total doped Eu2+/Gd3+ content and the minimum size appeares at 1% doped content. UV-Vis absorption spectra show
that Eu3+/Gd3+ codoping can enhance the visible light response of the TiO2. The photocatalyst activity of Eu2+/Gd3+ codoped TiO2 is evaluated by photodegradation of methyl orange in an aqueous solution under natural light irradiation, A synergetic effect is observed due to Eu2+/Gd3+ codoping, and the optimal doping concentration for Gd3+ and Eu2+ are in the range from 0.1% to 1.0% and 0.5% to 1.5% respectively. The relationship and function between Eu2+, Gd3+ and TiO2 are also discussed.

Key words： rare earth; codoping; synergetic effect; photocatalysis

Cite this article

ZHOU Yi , HUANG Ke-Long , ZHU Zhi-Ping , YANG Bo , XIA Chang-Bin , XIAO Han-Ning . Preparation and Photocatalysis Activity of Eu2+/Gd3+ codoped Nano-TiO2 Multiplex Photocatalyst from Sol-Gel Process Catalyzed with Acid[J]. Journal of Inorganic Materials, 2008 , 23(5) : 1085 -1088 . DOI: 10.3724/SP.J.1077.2008.01085

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