Ni-Doped LaFeO₃ Microspheres Composed of Nanoparticles for the Photocatalytic Degradation of Organic Dye

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ABSTRACT

Ni-doped LaFeO₃ (LFO) microsphere consisting of nanoparticles are synthesized by the hydrothermal route and used for the degradation of Rhodamine B (RhB) organic dye. The structural, morphological, and optical analysis is confirmed by the various characterization techniques, i.e., X-ray diffraction (XRD), field emission scanning electron microscopy (FESEM), and UV-Visible spectroscopy. The all Ni-doped LFO catalyst shows excellent efficiency towards the photocatalytic degradation of RhB dye. LFNO-0.2 catalyst shows the highest degradation efficiency of 89.44% with rate constant (k) and correlation coefficient (R²) of 0.013304 min^-1 and 0.989, respectively. The radical scavenging suggests the active involvement of O₂^– and h⁺ participates in the efficient degradation. Moreover, the material possesses excellent cyclic stability for the continuous Xenon lamp exposure of 540 min. Overall, the Ni-doped LFO can serve as one of the finest materials for wastewater remediation by means of photocatalytic dye degradation.

Significance of the study:

The study highlights the effectiveness of Ni-doped LaFeO₃ microspheres in the photocatalytic degradation of organic dyes, presenting a cost-effective and efficient solution for wastewater remediation.

Summary of the study:

This research synthesizes Ni-doped LaFeO₃ microspheres for Rhodamine B dye degradation, demonstrating superior photocatalytic efficiency and cyclic stability, making them ideal for wastewater treatment.