“…The shift of the absorbance of the material from the UV region to the Vis region along with the reduction of band gap energy gives the La, Pr and Sm-doped NdFeO 3 materials great potential in the application as photocatalysts under sunlight [17,18]. Doped NdFeO 3 orthoferrite materials have been synthesized by several methods, such as solid state reaction [13,14,16,19], microwave assisted [21], hydrothermal [2,22,23], co-precipitation using surfactants [24], and sol-gel or gel combustion with the addition of various polymers [15,25,26]. In previous studies [27][28][29][30][31], the authors successfully synthesized LnFeO 3 nanoparticles (Ln = Y, Nd, Pr, Ho) with several doping elements, such as Sr, Co, Ca and Ni by simple co-precipitation via the hydrolysis of cations in hot water (≥ 95 °C) and precipitation at room temperature (without any surfactant).…”