Phot ocatalytic activity o f Cu-doped ZnS pr epared by ultrasonic method

Many industries are widely using dyes and pigments for various purposes and their effluents can cause environmental pollutio n. Tradition al techniqu es such as a dsorption and coagulatio n are non-destructive and simply transfer the contaminant from water to anoth er phase [۱ ]. Photocatalysis, an advanced oxidation technology employing semico nductors as photocatalysts, is a promising method for the treatm ent of conta minated w ater [۲]. This method is clean, lo w temperature and n on-energy intensive approach for treatment of pollutants. Most of photocatalysts are not highly efficie nt under visible light i rradiation [۳ ], therefore, there is a n eed to look for other photocatalysts that absorb in the visible range [۴]. In the present paper, ultrasonic method was applied for preparation nanopar ticles of Cu-doped Z nS in water and influen ce of ultraso nic irradiation time, catalyst weight, calcinatio ns temperature, concentration of methylene blu e (MB) and pH of solution on photodegradatio n reaction of MB has b een studied to achieve maximum de gradation efficiency.

کلیدواژه ها:

Photocatalysis ، Reaction kinetics ، Degradation ، Nanopar ticles.