Photocatalytic　CO2　reduction　technology　plays　a　significant　role　in　the　energy　and　environmental　sectors,　highlighting　the　necessity　for　developing　high-efficiency　and　stable　catalysts.　In　this　study,　a　novel　photocatalyst,　x　NiCo　2　O　4　/CN　(x　=　1,　3,　and　5　wt%),　was　synthesized　by　depositing　zeolitic　imidazolate　framework-67　(ZIF-67)derived　nickel　cobaltate　(NiCo2O4)　hollow　nanocages　onto　porous　graphitic　carbon　nitride　(g-C3N4,　CN)　nano　sheets　for　photocatalytic　CO2　reduction.　Under　visible　light　irradiation,　the　resulting　3NiCo2O4/CN　photocatalyst　demonstrated　exceptional　CO　yields　of　up　to　2879.5　mu　mol　g-　1　h-　1　,　surpassing　those　of　NiCo2O4　and　CN　alone　by　factors　of　3.3　and　11.6,　respectively.　The　introduction　of　hollow　NiCo2O4　nanocages　increased　the　specific　surface　area　of　the　material　and　enhanced　the　number　of　active　sites,　while　strengthening　visible　light　absorption.　The　creation　of　a　built-in　electric　field,　induced　by　the　Fermi　level　difference　between　the　two　materials,　was　confirmed　through　ultraviolet　photoelectron　spectroscopy　(UPS)　characterization.　This　resulted　in　the　formation　of　a　Z-scheme　heterojunction,　significantly　enhancing　the　separation　and　migration　of　photogenerated　charge　carriers.　Notably,　3NiCo2O4/CN　exhibits　excellent　stability　during　long-term　photocatalytic　reactions,　ensuring　reliable　performance　for　practical　applications.　This　study　offers　novel　insights　and　methodologies　for　developing　efficient　photocatalytic　CO2　reduction　catalysts.