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

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