Kinetic and photo-electro cooperation effect on degrading dimethy phthalate in TiO2 /Ni PECO system
- Received Date: 25/07/2008
- Accepted Date: 12/06/2008
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Key words:
- TiO2/Ni photoelectrode /
- PECO /
- DMP /
- kinetics /
- photo-electro cooperation
Abstract: A TiO2 /Ni photoelectrocatalytic oxdition (PECO) system was established with TiO2/Ni photoelectrode prepared by microwaveassisted method as anode, graphite felt(GF) as cathode and saturated calomel electrode (SCE)as reference electrode. DMP (dimethy phthalate) was used as target compound to investigate the photoelectrocatalytic degradation kinetics and photoelectro cooperation effect. The result shows that degradation of DMP accords with pseudo firstorder kinetics law. When initial concentration of DMP was kept constant, factors influencing the photoelectrocatalytic degradation rate were obtained, which were, from strong to weak, effective area of TiO2/Ni photoelectrode, UV light intensity, oxygenation rate and external deflection voltage. Photoelectric had a synergistic effect on the degradation of DMP.