Porous NiO/ZnO flower-like heterostructures consisting of interlaced nanosheet/particle framework for enhanced photodegradation of tetracycline

•Porous NiO/ZnO flower-like microstructures were obtained by a facile method.•The structure feature is focused on the interlaced nanosheet/particle framework.•Morphological evolution mainly depends on the adding proportion of Ni/Zn.•Unique p-n heterojunction of NiO/ZnO leads to superior photocatalytic properties.•The method can be used for obtaining other composites with interlaced morphology.