The　exploitation　of　efficient,　robust,　and　easily　recyclable　catalysts　is　highly　desirable　for　photochemical　CO2　reduction　to　produce　fuels　and　chemicals.　Herein,　we　demonstrate　the　preparation　of　Ni@GC　magnetic　hollow　spheres　composed　of　metallic　Ni　nanoparticles　surrounded　by　few-layered　graphitic　carbon　(GC)　for　photocatalytic　CO2　reduction　with　high　efficiency.　The　Ni@GC　hollow　spheres　were　prepared　by　thermal　annealing　a　Ni-containing　metal-organic　framework　(Ni-MOF)　under　N2　atmosphere.　A　series　of　physiochemical　characterizations　reveal　that　the　Ni@GC　hollow　spheres　are　successfully　synthesized　with　large　surface　area　and　highly　porous　structure.　In　the　presence　of　Ni-C　bonding,　the　porous　Ni@GC　material　can　efficiently　accelerate　the　separation　and　transportation　of　photoexcited　charges,　as　well　as　improve　CO2　adsorption.　With　the　cooperation　of　a　ruthenium　photosensitizer　under　visible　light　irradiation,　the　Ni@GC　catalyst　exhibits　a　high　CO2-to-CO　conversion　activity,　giving　a　superior　CO-production　rate　of　27　μmol　h-1　(e.g.,　9.0　mmol　h-1　g-1).　Moreover,　the　Ni@GC　photocatalyst　is　highly　stable　and　can　be　separated　easily　by　a　magnetic　field　for　reuse.　The　possible　photosensitized　CO2　conversion　mechanism　is　also　proposed　based　on　the　relative　energy　levels　of　the　Ni@GC　catalyst　and　the　ruthenium　photosensitizer.　©　2019　American　Chemical　Society.