Kinetics of photoelectrocatalytic degradation of humic acid using B2O3.TiO2/Ti photoelectrode.
An innovative photoelectrode, B2O3.TiO2/Ti electrode, was prepared by galvanostaticanodisation. The morphology and crystalline texture of the B2O3.TiO2 film on electrode were examined by atomic force microscopy (AFM) and X-ray diffraction respectively. The 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 TiO2 film, bias, original concentration of humic acid solution. The optimum conditions were power of UV-lamp 125 W, area of TiO2 film 42.0 cm2, bias 1.4 V, original concentration of humic acid solution 5 mg/L in this PEC reaction system.
Yan-li
Jiang
J
Department of Environmental Engineering, Harbin Institute of Technology, Harbin 150001, China.
Hui-ling
Liu
L
Chun-mei
Lu
L
D001896:Boron Compounds / Q000737:chemistry; D004563:Electrochemistry / Q000379:methods*; D004566:Electrodes; D006812:Humic Substances / Q000032:analysis*; D006863:Hydrogen-Ion Concentration; D007700:Kinetics; D008956:Models, Chemical; D010084:Oxidation-Reduction; D010777:Photochemistry / Q000379:methods*; D014025:Titanium / Q000737:chemistry; D014874:Water Pollutants, Chemical / Q000032:analysis*; D018508:Water Purification / Q000379:methods*
D001896:Boron Compounds; D006812:Humic Substances; D014874:Water Pollutants, Chemical; C009495:titanium dioxide; C042168:boron oxide; D014025:Titanium