Au　and　Pt　have　been　considered　as　the　active　co-catalysts　for　the　enhanced　photocatalytic　activity　of　carbon　nitride.　However,　the　effects　of　Au　and　Pt　co-loading　on　the　surface　chemical　states　and　activity　of　carbon　nitride　were　rarely　discussed.　In　this　work,　a　series　of　carbon　nitride　samples　with　Au　and　Pt　loading　have　been　successfully　prepared　by　a　traditional　photodeposition　method.　The　as-prepared　samples　have　been　characterized　in　detail.　The　activities　of　the　samples　were　evaluated　by　water　splitting　into　hydrogen　under　visible　light　irradiation.　Results　show　that　the　integrity　of　characteristic　structure　of　carbon　nitride　is　retained　before　and　after　deposited　Au　and　Pt.　Interestingly,　when　Pt　is　firstly　loaded　on　the　surface　of　carbon　nitride,　Pt　species　are　in　the　form　of　PtO　with　small　particle　size.　While　if　Pt　is　loaded　on　the　surface　of　Au/carbon　nitride,　the　Pt　nanoparticles　(NPs)　are　metallic　Pt　NPs　with　relatively　large　particle　size.　For　Au,　it　is　insensitive　to　the　loading　order.　Among　all　Au　deposited　samples,　Au　species　are　in　the　form　of　metallic　Au.　Furthermore,　the　activities　of　the　Au　and　Pt　co-loaded　samples　exhibited　much　higher　than　those　of　single　co-catalyst　deposited　samples　and　pure　carbon　nitride.　The　dual　co-catalysts　in　the　form　of　metallic　state　are　more　active　to　increase　the　performance　of　water　splitting　over　carbon　nitride.　The　enhanced　activity　of　carbon　nitride　by　co-deposited　Au　and　Pt　could　be　well　explained　by　the　photoabsorption　performance　and　the　separation　of　photogenerated　electron　and　holes.　(C)　2015　Elsevier　B.V.　All　rights　reserved.