Kinetics of photoelectrocatalytic degradation of humic acid using B_2O_3˙TiO_2/Ti photoelectrode

Article type: Research Article

Authors: JIANG, Yan-li^; | LIU, Hui-ling | LU, Chun-mei

Affiliations: Department of Environmental Engineering, Harbin Institute of Technology, Harbin 150001, China | School of Life Science and Chemistry, Harbin College, Harbin 150001, China

Note: [] Corresponding author. E-mail: [email protected]

Abstract: An innovative photoelectrode, B_2O_3·TiO_2/Ti electrode, was prepared by galvanostaticanodisation. The morphology and crystalline examination results indicated that the anatase was the dominant component. The kinetics of photoelectrocatalytic (PEC) degradation of humic acid (HA) was investigated; the results demonstrated that effects from strongness to weakness on the photoelectrocatalytic degraded rate of humic acid: power of UV-lamp, area of TiO_2 film, bias, original concentration of humic acid solution. The optimum conditions were power of UV-lamp 125 W, area of TiO_2 film 42.0 cm^2, bias 1.4 V, original concentration of humic acid solution 5 mg/L in this PEC reaction system.

Keywords: TiO[TeX:] _2, photoelectrocatalytic degradation, humic acid, kinetics

Journal: Journal of Environmental Sciences, vol. 17, no. 2, pp. 208-211, 2005