A visible light activity was induced in ZnS nanocrystallites through carbon doping using environment friendly biodegradable starch as stabilizer for controlling particle size and as a source for carbon doping. Synthesized materials exhibits higher photocatalytic activity as compared to undoped bulk ZnS for the reductive dechlorination of chlorinated benzene derivatives to benzene in the presence of isopropyl alcohol as a sacrificial electron donor under visible light irradiation (λ ≥ 400 nm). The structure, morphology, chemical composition and photocatalytic activity of the nano particals have been investigated by XRD, TEM, EDAX and UV-Visible spectrophotometer. Nano size of synthesized C-doped ZnS has been confirmed by peak broadning in XRD and TEM, while visible light absorption is confirmed by UV-DRS.
Wurtzite ZnS, Nanocrystallite, Visible light, Photocatalyst, Dehalogenation