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

作　　者：JIANGYan-li LIUHui-ling LUChun-mei 

机构地区：[1]DepartmentofEnvironmentalEngineering,HarbinInstituteofTechnology,Harbin150001,China／／SchoolofLifeScienceandChemistry,HarbinCollege,Harbin150001,China [2]DepartmentofEnvironmentalEngineering,HarbinInstituteofTechnology,Harbin150001,China

出　　处：《Journal of Environmental Sciences》2005年第2期208-211,共4页环境科学学报（英文版）

基　　金：TheScientificResearchFoundationofHarbinInstituteofTechnology(No.HIT .2 0 0 1 56)

摘　　要：An innovative photoelectrode, B 2O 3·TiO 2/Ti electrode, was prepared by galvanostaticanodisation. The morphology and crystalline texture of the B 2O 3·TiO 2 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 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.An innovative photoelectrode, B 2O 3·TiO 2/Ti electrode, was prepared by galvanostaticanodisation. The morphology and crystalline texture of the B 2O 3·TiO 2 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 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.

关 键 词：TiO  2 photoelectrocatalytic degradation humic acid KINETICS 

分 类 号：X703[环境科学与工程—环境工程] R737[医药卫生—肿瘤]