Enhancing visible‐light photocatalytic activity by strongly binding flake BiFeO3 nanoparticles on graphene sheets.

To investigate the influence of graphene on the photocatalytic activity of bismuth ferrite (BiFeO3), BiFeO3 and flaky BiFeO3@graphene were prepared through the hydrothermal‐synthesis process. The as‐prepared particles were characterised by XRD, TGA, SEM, X‐ray photoelectron spectroscopy, and PL measurements. The results show that the BiFeO3 nanoparticles have a microstructure and homogeneously attached to graphene sheets. Moreover, the flaky BiFeO3@graphene composites exhibited higher photocatalytic efficiency than pure BiFeO3, especially under visible light irradiation. The synergistic effects of graphene and BiFeO3 of composites were proposed to guide the further improvement of their photocatalytic activity. [ABSTRACT FROM AUTHOR]