Employing　photocatalytic　technology　to　transform　CO2　into　valuable　fuels　is　considered　a　promising　solution　for　addressing　the　exacerbated　greenhouse　effect　and　energy　crisis.　The　development　of　photocatalysts　featuring　superior　charge　separation　efficiency　is　pivotal　for　the　widespread　implementation　of　photocatalytic　CO2　reduction　technologies.　Herein,　zero-dimensional　(0D)　NixP　nanoparticles　are　anchored　onto　two-dimensional　(2D)　LaTiO2N　nanosheets　by　a　photo-deposition　method,　and　a　NixP/LaTiO2N　Schottky　junction　composite　with　excellent　photocatalytic　CO2　reduction　performance　is　constructed.　The　optimal　NixP/LaTiO2N　composite　achieves　CO　and　CH4　yields　of　9.39　and　4.15　μmol　g−1　h−1,　respectively,　with　the　utilized　photoelectron　number　(UPN)　reaching　51.98　μmol　g−1,　which　is　approximately　9.7　times　higher　than　that　of　LaTiO2N　alone.　The　improved　photocatalytic　performance　of　the　composites　can　be　attributed　to　the　formation　of　Schottky　junctions,　which　effectively　suppress　the　recombination　of　photogenerated　carriers.　This　study　provides　a　new　idea　for　the　development　of　0D/2D　Schottky　junction　photocatalysts.　©　2025　The　Royal　Society　of　Chemistry.