Abstract
Multiferroic quantum dots of Bi1−xLaxFeO3; 0.05 ≤ x ≤ 0.35 (La:BiFeO3) prepared by double sintering ceramic technique were examined by X-ray diffraction (XRD), fluorescence, micro-Raman, and Fourier transform infrared (FT-IR) spectroscopy. La:BiFeO 3 were crystallized in a single-phase rhombohedral–hexagonal structure with space group R3c. The quantum dot size appeared as a broadening in the XRD diffraction peaks and assured from TEM micrograph. The fluorescence studies show the possible existence of an energy level above valence band maxima. The molecular signature of the samples was confirmed by FT-IR studies. Raman spectroscopy was used as a complementary spectroscopic technique hand-in-hand with FT-IR. Raman analysis reveals that lanthanum ions substitute bismuth in the rhombohedraly distorted hexagonal lattice. The results of Raman spectroscopy show good agreement with XRD and FT-IR results. This article offers such quantum dots (QDs) for photocatalytic degradation and opens a new platform in the field of photocatalysis.
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