Kinetics of photoelectrocatalytic degradation of endocrine disrupting chemicals using sulfur-doped TiO₂ /Ti photoelectrodes

SUN Hai-jian^1,2, JIN Yu-ping³, WANG Bin⁴, LIU Hui-ling¹, CHEN Chao¹, HAN Lei¹

1.School of Municipal and Environmental Engineering,Harbin Institute of Technology,Harbin 150090,China;2.Mudanjiang Planning Bureau,Mudanjiang 157000,China;3.Mudanjiang Normal University,Mudanjiang 157000,China;4.School of Architecture,Harbin Institute of Technology,Harbin 150090,China



Abstract:

In this study,sulfur-doped TiO2 /Ti photoelectrodes were prepared by anodization. The morphology, crystalline structure,composition of sulfur-doped TiO2 /Ti film and light absorption property were examined by SEM,XRD,XRF,XPS and UV/VIS respectively. Dimethyl phthalate( DMP) ,one kind of environmental disrupting chemicals( EDCs) ,was degraded by the optimized photoelectrodes. Power of xenon light,initial concentration of DMP,photoelectrocatalytic( PEC) area of photoelectrode and bias were investigated in the study on kinetics of PEC degradation of DMP. Hence,this study concluded that the optimum conditions were power of xenon light 150 W,initial concentration of DMP 1 mg/L,PEC area of sulfur-doped TiO2 /Ti photoelectrode 10 cm2,bias 1. 3 V in the PEC reaction system.

Key words:  sulfur-doped TiO2 /Ti photoelectrodes  anodization  photoelectrocatalytic ( PEC) degradation  dimethyl phthalate( DMP)  kinetics

DOI：10.11916/j.issn.1005-9113.2010.04.015

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