Research Progress in the Treatment of AZO Dye Wastewater by Modified TiO2 with Photoelectric Coordination
AZO dyes(AZO)are a kind of water-soluble organic compounds that are difficult to biodegrade.In recent years,AZO dyes have been widely used in printing and dyeing industries because of their good dyeing properties.However,once AZO wastewater is discharged into natural water bodies,it will cause significant environmental pollution.This paper mainly introduced the treatment effect of different types of modified TiO2 on AOZ wastewater and analyzed the action principle,compared and analyzed the advantages and disadvantages of single TiO2 and modified TiO2,actively explored the catalytic mechanism of modified TiO2 catalyst,and analyzed the specific role of metal and non-metal doping in it.It provides scientific basis and technical support for controlling the proportion of doped metal or non-metal more accurately and improving the efficiency of catalyst in the future.
photoelectrocatalysisAZO dyesprinting and dyeing wastewatermodified TiO2doping