| Abstrakt: |
Via a simple sol-gel approach, the high photocatalytic efficiency of Bi1-xSmxFeO3 nanoparticles were realized when x was 0, 0.05, 0.10, 0.15 and 0.20. Microstructural characterizations including X-ray diffraction (XRD) spectroscopy, Raman spectroscopy, field emission scanning electron microscope (FESEM), x-ray photoelectron spectroscopy (XPS) and ultraviolet-visible (UV-Vis) spectrophotometer, demonstrated a transformation from the rhombohedral structure of BiFeO3 to the orthorhombic structure of Bi0.80Sm0.20FeO3. Moreover, the experimental findings discovered that the photocatalytic efficiency of Bi0.80Sm0.20FeO3 was the highest, reaching 98.5% within 2 h based on visible light degradation. The underlying mechanisms, involved to phase transition, size effect, band energy and Fenton reaction, were discussed. The research presented in the paper is crucial in offering a fundamental strategy for utilizing BiFeO3 to address the issue of water pollutants. Highlights: Bi1-xSmxFeO3 nanoparticles with varying Sm doping levels (x = 0, 0.05, 0.10, 0.15, and 0.20) were successfully synthesized in this study. X-ray diffraction and Raman spectroscopy demonstrated that the transformation of the rhombohedral crystal structure (R3c space group) to the orthorhombic structure (Pnma space group) in Bi0.80Sm0.20FeO3. Experimental results indicated that the photocatalytic efficiency of Bi0.80Sm0.20FeO3 reach to 98.5%, with superior chemical stability. These findings offer a fundamental strategy for utilizing BiFeO3 in addressing water pollutant issues. [ABSTRACT FROM AUTHOR] |
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