Application of TiO2-RuO2/Ti electrodes modified with transition metal oxides in photoelectrochemical degradation of H-acid - synergetic effect

作者：Chrzescijanska Ewa^*; Kusmierek Elzbieta

来源：Journal of Photochemistry and Photobiology A: Chemistry , 2013, 257: 5-10.

DOI：10.1016/j.jphotochem.2013.02.011

• Semiconductor electrodes
• Photoelectrochemistry
• Synergetic effect
• H-acid

Results of investigation of H-acid degradation in photoelectrochemical process with the application of TiO2-RuO2/Ti electrodes modified with transition metals oxides like: Nb2O5, ZrO2 and Y2O3, are described. Comparison of H-acid conversion calculated as a change in COD and TOC in photocatalytic, electrochemical and photoelectrochemical process shows that the highest conversion was achieved in the photoelectrochemical process due to a significant synergetic effect. The synergetic effect in the photodegradation of H-acid was estimated as a parameter - synergetic factor (SF). It appeared that SF depended on current intensity applied in the photoelectrochemical degradation of H-acid and on modification of titanium electrodes. The highest synergetic effect was obtained in the case of TiO2-RuO2/Ti electrodes modified with Nb2O5 in the atmosphere of nitrogen and applied in the processes carried out at the current intensity of 0.3 A.

• 出版日期2013-4-1