PREPARATION, CHARACTERISATION AND PHOTOCATALYTICACTIVITY OF TERNARY GRAPHENE-Fe3O4:TiO2 NANOCOMPOSITES

摘要

Ternary graphene-Fe3O4:TiO2 nanocomposites (GF:TiO2) were successfully prepared by ahydrothermal method. Characteristics of the nanocomposites were investigated byscanning electron microscopy (SEM), transmission electron microscopy (TEM), X-raydiffraction (XRD) and UV-visible spectroscopy (UV-vis). Photocatalytic activityevaluated by degradation of methylene blue (MB) under UV and visible light determinedthe efficiency of GF:TiO2 at a ratio of 1:4, reaching 88.11% and 90.52% in 90 min underUV and visible light respectively. Enhanced visible light photocatalytic activity fordegradation of MB was mainly attributed to the two dimensional structure of graphene as agood electron acceptor and transporter.