Metal/semiconductor　systems　are　one　type　of　promising　heterogeneous　photocatalyst　for　solar　conversion.　The　injection　of　hot　electrons　from　photoactivated　metals　to　semiconductors　is　the　rate-determining　step　owing　to　the　Schottky　barrier　created　at　the　interface.　It　is　highly　desirable　to　develop　new　approaches　for　promoting　hot　electron　transfer.　Herein,　we　present　one　type　of　new　Mott-Schottky-type　photocatalytic　material　consisting　of　TiO　2　nanosheets　and　Ru　nanoparticles　(NPs)　coated　with　nitrogen-doped　carbon　(TiO　2　@NC-Ru-T).　They　are　readily　available　through　the　conformal　coating　of　TiO　2　with　a　main-chain　imidazolium-based　ionic　polymer　(ImIP),　followed　by　anion　exchange　with　perruthenate　and　subsequent　pyrolysis;　the　sintering　of　Ru　NPs　is　effectively　inhibited　by　ImIP,　generating　small-sized　and　well-dispersed　Ru　NPs.　The　nitrogen-doped　carbon　in　TiO　2　@NC-Ru-T　both　strengthens　the　performance　of　Ru　NPs　and　facilitates　photoelectron　transfer　from　photoactivated　Ru　NPs　to　TiO　2　through　a　Mott-Schottky　contact.　The　dyadic　effects　greatly　promote　selective　aerobic　oxidation　of　alcohols　with　air　as　an　oxidant　under　visible　light　irradiation.　This　work　provides　a　feasible　protocol　for　improving　visible　light　absorption　and　charge/electron　transfer　in　photocatalytic　reactions,　and　holds　great　promise　for　developing　a　new　type　of　solar-to-chemical　energy　conversion　reaction.　©　2019　The　Royal　Society　of　Chemistry.