Photocatalytic degradation of methyl orange and Congo red using C,N,S-tridoped SnO2 nanoparticles

Abstract

In this study, the photocatalytic degradation of methyl orange and Congo red dye was investigated in<br />aqueous solution using C,N,S-tridoped SnO2 nanoparticles as a nano photocatalyst. The degradation<br />was carried out under different conditions including the photocatalyst amount, initial concentration<br />and pH of the solution. The results indicated that the degradation of methyl orange and Congo red<br />was strongly influenced by these parameters. The best conditions for the degradation of methyl<br />orange and Congo red were obtained. The optimum value of photocatalyst amount used was 0.4 g/L.<br />It was found that the photodegradation efficiency increase with increasing the initial concentration of<br />methyl orange and Congo red. The optimum pH of the system used is 6.5.