Fig. 6From: Effect of Zinc Acetate Concentration on Optimization of Photocatalytic Activity of p-Co3O4/n-ZnO HeterostructuresSEM images of p-Co3O4/n-ZnO heterostructures grown on the surface of Ni substrate: a Co3O4/ZnO-5, b Co3O4/ZnO-15, c Co3O4/ZnO-25, d Co3O4/ZnO-35, e Co3O4/ZnO-45, and f Co3O4/ZnO-55, respectivelyBack to article page