Polymeric　carbon　nitride　(PCN)　photocatalysts　have　the　potential　to　remove　NO　from　ambient　air.　However,　the　catalytic　performance　of　PCN　is　limited　by　the　lack　of　sufficient　active　sites　to　effectively　activate　molecular　oxygen.　Herein,　we　report　the　construction　of　photocatalysts　consisting　of　defective-activated-carbon　and　PCN　via　amide　bond　formation.　This　photocatalyst　not　only　significantly　enhances　the　chemisorption　of　O-2,　but　also　accelerates　the　activation　of　molecular　oxygen　and　oxidation　of　NO　by　creating　a　new　electron　transport　pathway.　This　work　provides　a　new　strategy　for　polymer　photocatalysts　to　promote　molecular　oxygen　activation　by　constructing　close-contact　interfaces　through　amide　bonding.