ZnO was doped with a mixture of C, N and S nonmetals.
cns-ZnO had smaller particle size than ZnO.
cns-ZnO was efficiently activated using UVA/LEDs for oxidation of diazinon pesticide.
cns-ZnO had much greater photocatalytic activity than plain ZnO.
Diazinon toxicity considerably decreased after treatment in cns-ZnO/LED process.