Dye-sensitized　photocatalysis　has　been　extensively　studied　for　photocatalytic　solar　energy　conversion　due　to　the　advantage　in　capturing　long-wavelength　photons　with　a　high　absorption　coefficient.　The　rational　integration　of　photosensitizer　with　semiconductor　and　cocatalyst　to　collaboratively　operate　in　one　system　is　highly　desired.　Here,　we　fabricate　a　Ni(OH)2-loaded　titanate　nanosheet　(Ni(OH)2/H2Ti6O13)　composite　for　high-performance　dye-sensitized　photocatalytic　CO2　reduction.　The　ultrathin　H2Ti6O13　nanosheets　with　negative　surface　charge　provide　an　excellent　support　to　anchor　the　dye　photosensitizer,　while　the　loaded　Ni(OH)2　serves　as　an　adsorbent　of　CO2　and　electron　sink　of　photoelectrons.　As　such,　the　photoelectrons　derived　from　the　[Ru(bpy)3]Cl2　sensitizer　can　be　targeted　transfer　to　the　Ni(OH)2　active　sites　via　the　H2Ti6O13　nanosheets　linker.　A　high　CO　production　rate　of　1801　μmol　g-1　h-1　is　obtained　over　the　optimal　Ni(OH)2/H2Ti6O13,　while　the　pure　H2Ti6O13　shows　significantly　lower　CO2　reduction　performance.　The　work　is　anticipated　to　trigger　more　research　attention　on　the　rational　design　and　synthesis　of　earth-abundant　transition　metal-based　cocatalysts　decorated　on　ultrathin　2D　platforms　for　artificially　photocatalytic　CO2　reduction.　©　2021　Institute　of　Process　Engineering,　Chinese　Academy　of　Sciences.