Enhancement of photocatalytic by Mn3O4 spinel ferrite decorated graphene oxide nanocomposites

Abstract The hydrothermal process was used to prepare Mn 3 O 4 /x%GO nanocomposites (NC’s) having different ratios of the nanoparticles (NP’s) on surface graphene oxide (GO) sheet. SEM image showed that NP’s were distributed over GO HRTEM images exhibited lattice fringe arising from (101) plane interplanar d-spacing 0.49 nm decorating GO. electronic absorption spectra NC’s also show broad bands 250 550 nm. These arise d–d crystal field transitions tetrahedral 3+ species and indicate a distortion in structure. Photo-catalytic activity spinel ferrite by themselves low but photo-catalytic is enhanced when are Moreover, /10%GO best activity. This result comes formation Mn–O–C bond confirm FT-IR. would facilitate transfer photoelectrons surfaces sheets. PL emission which violet–red luminescent region shows creation defects fabricated nanostructures. create defect states electrons VB can be excited CB. degradation efficiency achieved they decorate sheets solution. Highlights Lattice Mn3O4 with an for plane. Photocatalytic itself low. Number created depends number given area bonding sheet though junction. processes accelerated Mn3O4/10%GO Graphic abstract