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A Comparative Study of ZnS and CoS-ZnS (1 : 2) in Photocatalytic Degradation of Azure B
Neelam Gandhi, Vijaya Sharma, Ankur Khant and R. C. Khandelwal
A mixed semiconductor CoS-ZnS (in 1 : 2 mole ratios ) was prepared through coprecipitation and used as photocatalyst in the photodegradation of az ure B. 1 : 2 CoS-ZnS was found superior in degradat ion of azure B under visible light irradiation as compa red to ZnS. Various parameters like amount of semiconductor, pH, light intensity, dye concentrati on etc. were varied and their effect on rate of degradation was observed. A tentative mechanism has been proposed
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