Over　the　past　decades,　with　the　fast　development　of　global　industrial　development,　various　organic　pollutants　discharged　in　water　have　become　a　major　source　of　environmental　pollution　in　waste　fields.　Photocatalysis,　as　green　and　environmentally　friendly　technology,　has　attracted　much　attention　in　pollutants　degradation　due　to　its　efficient　degradation　rate.　However,　the　practical　application　of　traditional　semiconductor　photocatalysts,　e.g.　TiO2,　ZnO,　is　limited　by　their　weak　visible　light　adsorption　due　to　their　wide　band　gaps.　Nowadays,　the　study　in　photocatalysts　focuses　on　new　and　narrow　band　gap　semiconductors.　Among　them,　Ag-based　semiconductors　as　promising　visible　light-driven　photocatalysts　have　aroused　much　interesting　due　to　their　strong　visible　light　responsibility.　Most　of　Ag-based　semiconductors　could　exhibit　high　initial　photocatalytic　activity.　But　they　easy　suffer　from　poor　stability　because　of　photochemical　corrosion.　Design　heterojunction,　increasing　specific　surface　area,　enriching　pore　structure,　regulating　morphology,　controlling　crystal　facets,　and　producing　plasmonic　effects　were　considered　as　the　effective　strategies　to　improve　the　photocatalytic　performance　of　Ag-based　photocatalyts.　Moreover,　combining　the　superior　properties　of　carbon　materials　(e.g.　carbon　quantum　dots,　carbon　nano-tube,　carbon　nanofibers,　graphene)　with　Ag-based　semiconductor　could　produce　high　efficient　composite　photocatalyts.　(C)　2015　Elsevier　B.V.　All　rights　reserved.