bismuth ferrite/reduced graphene oxide thin film as a visible-light photocatalyst

Bismuth ferrite/reduced graphene oxide (bgo) thin film was grown on a glass substrate via a simple sol-gel dip coating technique for photocatalytic dye degradation. the as-prepared bgo thin film was characterized by x-ray diffraction (xrd) and scanning electron microscopy (sem). xrd patterns indicate that the bgo thin film is mainly composed of a rhombohedral perovskite bfo phase with all peaks indexed to the r3c space group. sem result exhibit hierarchical porosity and spherical morphology with a uniform particle size of 25 nm. it also reveals that the matrix is uniform without any segregation of impurity phase. the photocatalytic experiment shows that bgo with 5 cm2 size can degrade methylene blue dye up to 90% in 300 min. the improvement in photocatalytic activity of the bfo by adding rgo could be ascribed to the enhanced separation efficiency of visible light-generated electron-hole pairs. the possible photocatalytic mechanism with •oh radical species as the main active species in photocatalysis was proposed.

Bismuth ferrite/reduced graphene oxide thin film as a Visible-light photocatalyst

Bismuth ferrite/Reduced graphene oxide (BGO) thin film was grown on a glass substrate via a simple sol-gel dip coating technique for photocatalytic dye degradation. The as-prepared BGO thin film was characterized by X-ray diffraction (XRD) and scanning electron microscopy (SEM). XRD patterns indicate that the BGO thin film is mainly composed of a rhombohedral perovskite BFO phase with all peaks indexed to the R3C space group. SEM result exhibit hierarchical porosity and spherical morphology with a uniform particle size of 25 nm. It also reveals that the matrix is uniform without any segregation of impurity phase. The photocatalytic experiment shows that BGO with 5 cm2 size can degrade methylene blue dye up to 90% in 300 min. The improvement in photocatalytic activity of the BFO by adding rGO could be ascribed to the enhanced separation efficiency of visible light-generated electron-hole pairs. The possible photocatalytic mechanism with •OH radical species as the main active species in photocatalysis was proposed.