The introduction of BiFeO3 (BFO) as one of the few materials exhibiting multiferroic properties at room temperature generated much interest in this semiconductor, and the discovery of the photocatalytic activity of BFO offers new opportunities for the application of BFO in water purification. As band gap values are size dependent, the band gap energy of BFO has been reported to be in the range of 2.5–2.8 eV by Ihlefeld et al. [16] as well as Hauser et al. [17]; however, value of 2.2 eV has also been stated in the literature for nanostructured BFO particles [18]. These reports show that BFO has a smaller band gap compared to the band gap energy of 3.2 eV for TiO2. Xu et al. reported the degradation of CR by applying BFO thin film under visible light irradiation, which proved to be economic as well as reproducible. Their results indicated an approximate 16% decrease in the contaminant concentration in roughly 240 min systems require external energy input, such as irradiation with ultraviolet light [7–9]. Therefore, it is still challenging to develop a highly efficient and low leaching heterogeneous catalytic system without any external energy input [10,11].