The　reasonable　employment　of　cocatalyst　in　photocatalysis　can　effectively　promote　the　photocatalytic　H-2　production　activity.　In　this　study,　carbon　hollow　spheres　(C),　as　a　good　conductive　nonmetallic　material,　have　been　utilized　as　a　novel　cocatalyst　and　a　matrix　for　loading　the　Cu-doped-TiO2　nanoparticles　by　a　successive　hydrothermal　method　and　metal　molten　salt　method.　The　Cu-doped-TiO2　nanoparticles　were　tightly　anchored　on　the　surface　of　carbon　hollow　sphere　to　form　a　zero-dimensional/three　dimensional　(0D/3D)　Cu-doped-TiO2/C　heterojunction.　The　optimal　Cu-doped-TiO2/C　heterojunction　demonstrated　greatly　enhanced　photocatalytic　H-2　generation　activity　(14.4　mmol.g(-1).　h(-1))　compared　with　TiO2　(0.33　mmol.g(-1).h(-1))　and　TiO2/C　(0.7　mmol.g(-1).h(-1)).　The　performance　improvement　was　mainly　due　to　the　synergistic　effect　of　carbon　hollow　sphere　cocatalyst　and　Cu-doping,　the　Cu-doping　in　TiO2　nanoparticles　can　minimize　charge　recombination　and　enhance　the　available　photoex-cited　electrons,　while　the　3D　carbon　hollow　spheres　can　act　as　electron　traps　to　accelerate　the　charge　separation　and　offer　abundant　active　sites　for　solar　water　splitting　reaction.