This　study　has　invented　a　novel　composite　photocatalytic　material　of　TiO2/graphene　(TiO2/G)　via　the　hydrothermal　method.　The　prepared　TiO2/graphene　(TiO2/G)　composite　catalysts　were　investigated　in　detail　using　various　characterisation　experiments.　The　characterisation　experiments　indicated　that　the　TiO2/graphene　(TiO2/G)　nanocomposites　were　successfully　prepared.　It　can　be　observed　that　the　TiO2　nanoparticles　were　observed　uniformly　distributing　on　the　graphene　oxide　(GO)　and　the　prepared　TiO2/graphene　(TiO2/G)　nanocomposites　possess　huge　specific　surface　area,　small　pore　size,　and　low　electron-hole　pair　complexation　rate　to　degrade　the　pollutants.　For　the　first　time,　TiO2/G　is　used　as　a　photocatalytic　material　to　treat　mineral　processing　wastewater.　Compared　to　GO　and　TiO2,　under　simulated　light　irradiation,　the　photodegradation　efficiency　of　18%　TiO2/G　samples　reached　97.03%　after　100　min.　By　successfully　anchoring　TiO2　on　GO,　the　photoresponse　range　of　TiO2/G　was　broadened　(from　200–380　nm　to　200–800　nm).　The　activity　was　also　further　improved　(after　100　min　of　simulated　light,　the　photocatalytic　efficiency　of　pure　TiO2　was　only　17.88%,　and　the　photocatalytic　efficiency　of　18%　TiO2/G　was　5.43　times　higher　than　that　of　pure　TiO2).　This　work　advances　the　development　of　a　potential　photo-,　photoelectro-systems　for　the　treatment　of　real　mineral　processing　wastewater.　©　2021　Elsevier　B.V.