Affiliations: Department of Environmental Engineering, Harbin Institute of Technology, Harbin 150001, China | Department of Civil and Structural Engineering, The Hong Kong Polytechnic University, Hung Hom, Komloon, Hong Kong
Abstract: An innovative photoelectrode, TiO2/Ti mesh electrode, was prepared by anodisation. In anodisation, 0.5 mol/L H2SO4 was used as electrolytic solution, the current had been constantly 1A from the beginning of the oxidation until reaching a designed voltage. Results showed that the photocatalytic activity of electrode was better when the designed voltage was 160V. The morphology and the crystalline texture of the TiO2 film on mesh electrode were examined by scanning electronic microscopy and Raman spectroscopy respectively. The examination results indicated that the structure and properties of the film depended on anodisation rate, and the anatase was the dominant component under the controlled experimental conditions. Degradation of Rhodamine B in photocatalytic (PC) and photoelectrocatalytic (PEC) reaction was investigated.
Keywords: mesh photoelectrode, anodisation, TiO2, photoelectrocatalytic oxidation, rhodamine B