Photocatalytic　H2O2　production　has　gained　significant　attention　as　an　environmentally　friendly　approach.　The　key　is　to　explore　efficient　photocatalysts　with　sufficient　active　sites　and　excellent　electron　transfer　capacity.　Herein,　we　propose　a　novel　approach　by　incorporating　carbon　dots　(CDs)　on　ethylenediamine　capped　Zn0.5Cd0.5S,　which　was　bridged　with　an　interfacial　amide　bond.　Smooth　transfer　of　photoinduced　electrons　from　Zn0.5Cd0.5S　to　carbon　dots　via　a　high-speed　electron　channel　is　afforded　by　interfacial　amide　bond.　A　remarkable　H2O2　yield　with　a　rate　of　252　μmol/h　and　an　apparent　quantum　yield　(AQY)　of　31　%　at　400　nm　is　achieved.　Photoelectrochemical　analysis　and　density　function　theory　(DFT)　calculation　reveal　CDs　with　abundant　oxygenous　functional　groups　as　active　sites,　boosting　activity　and　selectivity.　This　interfacial　engineering　strategy　with　the　acceleration　of　electrons　transfer　and　enhanced　2e-　selectivity　can　be　applied　to　advanced　photocatalytic　systems　for　the　achievement　of　valuable　organics,　environmental　purification　and　new　energy　carriers.　©　2024　Elsevier　B.V.