Spinel ZnCo2O4 nanosheets were fabricated by a facile template-free wet chemical method.
ZnCo2O4 nanosheet supported Au catalyst exhibited a good stability for oxidizing CO.
Visible light could promote the adsorption and activation of CO and O2 on Au/ZnCo2O4.
A efficient charge transfer occurred on the interface of Au and ZnCo2O4.