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Chinese Optics Letters

Chinese Optics Letters

| PUBLISHED MONTHLY BY CHINESE LASER PRESS AND DISTRIBUTED BY OSA

  • Vol. 7, Iss. 10 — Oct. 1, 2009
  • pp: 956–959

Photocatalytic degradation of methyl orange by nano-TiO2 thin films prepared by RF magnetron sputtering

Fanming Meng, Ling Cao, Xueping Song, and Zhaoqi Sun  »View Author Affiliations


Chinese Optics Letters, Vol. 7, Issue 10, pp. 956-959 (2009)


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Abstract

Nano-TiO2 thin films are deposited by radio frequency (RF) magnetron sputtering using TiO2 ceramic target and characterized by X-ray diffractometer, atomic force microscope, and ultraviolet-visible spectrophotometer. The photocatalytic activity is evaluated by light-induced degradation of methyl orange solutions (5, 10, and 20 ppm) using a high pressure mercury lamp as the light source. The film is amorphous, and its energy gap is 3.02 eV. The photocatalytic degradation of methyl orange solution is the first-order reaction and the apparent reaction rate constants are 0.00369, 0.0024, and 0.00151 for the methyl orange solution concentrations of 5, 10, and 20 ppm, respectively.

© 2009 Chinese Optics Letters

OCIS Codes
(240.6670) Optics at surfaces : Surface photochemistry
(310.6860) Thin films : Thin films, optical properties

Citation
Fanming Meng, Ling Cao, Xueping Song, and Zhaoqi Sun, "Photocatalytic degradation of methyl orange by nano-TiO2 thin films prepared by RF magnetron sputtering," Chin. Opt. Lett. 7, 956-959 (2009)
http://www.opticsinfobase.org/col/abstract.cfm?URI=col-7-10-956

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