A　simple　and　efficient　molecular/solid-state　hybrid　photocatalyst　consisting　of　noble　metal　(i.e.,　Au-III,　Pt-IV,　and　Pd-II)　chlorides-functionalized-mesoporous　graphitic　carbon　nitride　(mpg-CN)　was　developed　to　improve　the　photocatalytic　performance　of　mpg-CN　toward　NO　removal.　Compared　with　the　parent　mpg-CN,　the　optimal　1%　PdCl2　modified　mpg-CN　increased　the　conversion　efficiency　by　approximately　33%,　improved　the　inhibiting　efficiency　of　NO2　release　by　approximately　three　times,　and　promoted　the　long　term　stability　of　photocatalysts　for　NO　removal　in　a　continuous　flow　model　reaction　system.　The　prepared　samples　were　characterized　by　X-ray　diffraction,　transmission　electron　microscopy　with　energy-dispersive　X-ray　spectroscopy　elemental　mapping,　ultraviolet-visible　light　absorbance　spectroscopy,　X-ray　photoelectron　spectroscopy,　photoluminescence　emission　spectroscopy　and　electron　paramagnetic　resonance　spectroscopy.　The　ultrafast　charge　separation　and　efficient　generation　of　O-2-oxygen　species　were　achieved　by　the　charge　transfer　model　of　PdCl2/mpg-CN　similar　to　the　solid-state　Z-scheme　system.　This　charge　transfer　model　contributed　to　the　high　photocatalytic　performance　of　the　prepared　PdCl2/mpg-CN　molecular/solid-state　hybrid　photocatalyst.　(C)　2015　Elsevier　B.V.　All　rights　reserved.