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Influence of La3+ Ions on the Photo-Catalytic Activity of TiO2 Films Prepared by Micro-Plasma Oxidation Method

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Abstract:

Micro-porous TiO2 ceramic films have been grown on titanium plates by the micro-plasma oxidation method with the electrolyte of H2SO4. The influence of La3+ ion addition in the electrolyte on the photo-catalytic activities was investigated. The results showed that titanium dioxide thin films produced with La3+ addition electrolyte exhibit higher photo-activity than pure electrolyte for the oxidation of rhodamine B. The removal of rhodamine B reaches 90% for 30 min when La3+ addition concentrate is 0.05 g/L. Experimental results of X-ray diffraction and atom force microscopy show that the increase in activity is related to change in the lattice parameters and cell volume.

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Periodical:

Key Engineering Materials (Volumes 336-338)

Pages:

1949-1952

DOI:

https://doi.org/10.4028/www.scientific.net/KEM.336-338.1949

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Online since:

April 2007

Authors:

Xiao Hong Wu, Wei Qin, Xian Bo Ding, Zhao Hua Jiang

Keywords:

La3+ Dopant, Micro-Plasma Oxidation, Photocatalytic Activity, TiO2 Film

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© 2007 Trans Tech Publications Ltd. All Rights Reserved

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