Abstract.
In the present analysis, we study the assembly of a low-cost and visible light active ZnFe2-xGdxO4 (x = 0 , 0.3, 0.5 and 0.7) nanoparticles (NPs) photocatalyst. The synthesized samples were characterized by several physicochemical techniques, such as X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FTIR), UV-Visible absorption spectroscopy (UV-Vis), scanning electron microscopy (SEM) and high-resolution transmission electron microscopy (HRTEM). The phase transition from cubic to orthorhombic was confirmed by XRD patterns. The increase in the concentration of Gd3+ substitution in ZnFe2O4 NPs enhances the redshift of absorption in the visible region of UV-Vis absorption spectra and reduces the band gap. In the photo-Fenton-type reaction, the gadolinium-substituted zinc ferrite (ZGF) NPs exhibit a significant catalytic activity for the degradation of methylene blue (99% in 90 minutes) under visible light (500W xenon lamp) with respect to bare samples (95% in 240 minutes) and they also show an excellent reusability nature. These materials were also screened for antibacterial activity against Gram-negative bacteria strains (Pseudomonas aeruginosa and Escherichia coli).
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Patil, S.B., Bhojya Naik, H.S., Nagaraju, G. et al. Synthesis of visible light active Gd3+-substituted ZnFe2O4 nanoparticles for photocatalytic and antibacterial activities. Eur. Phys. J. Plus 132, 328 (2017). https://doi.org/10.1140/epjp/i2017-11602-x
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DOI: https://doi.org/10.1140/epjp/i2017-11602-x