Figure 4
From: A novel approach to prepare Bi2Fe4O9 flower-like spheres with enhanced photocatalytic performance

Schematic illustration of forming process of three-dimensional porous Bi2Fe4O9 spheres.
From: A novel approach to prepare Bi2Fe4O9 flower-like spheres with enhanced photocatalytic performance
Schematic illustration of forming process of three-dimensional porous Bi2Fe4O9 spheres.