研究目的
To fabricate LaFeO3 nanoparticles using a simple microwave plasma method combined with high temperature calcination and investigate the effect of the calcination temperature on the crystallinity, morphology, and band gap, as well as examine the photocatalytic activities of the as-synthesized LaFeO3 nanoparticles by photodegrading of rhodamine B (RhB) under visible light irradiation.
研究成果
LaFeO3 nanoparticles with an orthorhombic structure were successfully prepared by a microwave plasma method combined with 700–1000 °C calcination. The calcination temperature played an important role in the particle size, crystalline degree, impurity and the band gaps of the LaFeO3 products. The LaFeO3 sample calcined at 900 °C exhibited the highest photocatalytic activity for the degradation of RhB under visible light because of the narrowed band gap, the higher crystallinity and the higher oxygen adsorption.
研究不足
The study focuses on the synthesis and characterization of LaFeO3 nanoparticles and their photocatalytic activity under visible light. The limitations include the specific conditions of microwave plasma synthesis and calcination temperatures, which may not be universally applicable. The photocatalytic activity is evaluated only for RhB degradation, and the study does not explore other potential applications or pollutants.
