Characterization and Photocatalytic Activity of Composite La-TiO₂/ITO Thin-Film Electrodes

Abstract:

The different molar ratios of La/Ti (0.025, 0.050, 0.075 and 0.100) photocatalytic electrodes use in this study were synthesized by sol-gel method and dip-coating method. The XRD pattern of TiO2/ITO presents only anatase phases, [1] but for La-TiO2/ITO presents both anatase and rutile phases. The SEM image of the La-TiO2/ITO showed particles of regular shapes with smaller size (＜10nm) compared to the TiO2/ITO, which presented uniform particles of spherical structure and larger size （20nm）.The La-TiO2/ITO photocatalytic electrode with molar ratio 0.050 shows the best ability both on the absorbtion and photocatalytsis. Applied potential 2.0V would effectively increase the photoelectrocatlaytic activity under visible light irradiation.

• Periodical: Advanced Materials Research (Volumes 79-82)
• Pages: 899-902
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.79-82.899
• Online since: August 2009
• Authors: Ming Yi Chang, Wei Fu Wang, Yung Hsu Hsieh, Chen Yu Chang
• Keywords: Indium Tin Oxide (ITO), Lanthanum, Photocatalytic, Photoelectrocatalytic

References

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[4] 0 V Fig. 9. removal rate of photocatalyst for photocatalytic electrodes under visible light at varied pH Fig. 10. removal rate of photocatalyst for photocatalytic electrodes at varied potential.