Herein,　a　series　of　Pt　nanoparticles　modificatory　Mn　doped　Bi4Ti3O12　ultrathin　nanosheets　(Pt/MnNS)　are　constructed　as　a　surface　functionalized　photocatalyst　for　the　visible-light-driven　selective　benzyl　alcohol　(BA)　oxidation.　Especially,　Pt/5MnNS　shows　the　best　performance　with　a　benzaldehyde　(BD)　yield　rate　of　1180　μmol·g−1·h−1　and　a　selectivity　of　99.9　%.　More　importantly,　experimental　results　reveal　that　Mn　doping　not　only　extends　the　optical　absorption　range　of　the　photocatalyst　to　the　visible　region,　but　also　induces　the　formation　of　more　surface　Ti4+δ　atoms.　Those　Ti4+δ　atoms　as　stronger　Lewis　acid　centers　achieve　more　conspicuous　adsorption　and　activation　of　BA　via　the　C–OTi　coordination.　It　makes　the　deprotonation　of　BA　by　photogenerated　holes　be　easier.　Meanwhile,　Pt　nanoparticles　significantly　promote　the　separation　and　transfer　of　the　photogenerated　carriers　for　supporting　the　formation　of　superoxide　and　carbon-centered　radicals.　Thus,　the　photocatalytic　BA　oxidation　efficiency　is　markedly　improved　by　surface　multicomponent　synergistic　effect.　©　2023　Elsevier　Inc.