| Autor: |
Kadam, K. V., Phalake, S. S., Lad, M. S., Parale, V. G., Gunjakar, J. L., Khot, V. M. |
| Zdroj: |
Emergent Materials; 20240101, Issue: Preprints p1-13, 13p |
| Abstrakt: |
In this study, we present the efficient degradation of methylene blue (MB) under visible light using nanostructured zinc ferrite (ZnFe2O4) photocatalysts. The ratio of glycine and nitrate as a fuel and oxidant, respectively employed for the preparation of ZnFe2O4nanoparticles by using the combustion method. The ratio variation of glycine and nitrate shows an effect on crystal structure, texture, and pores formation which is supported for photodegradation. The X-ray diffraction and scanning electron microscopy study exhibited cubic spinel structure and highly porous morphology respectively. X-ray photoelectron spectroscopy, and ultra-violet diffuse reflectance spectroscopy techniques utilized for the confirmation of ZnFe2O4material and band gap energy measurement. Furthermore, the adiabatic flame temperature (Tad) and the properties of the resulting product were studied in various combinations of nitrates and glycine. Thermodynamic analyses reveal that both the number of gases produced, and adiabatic flame temperature increase with a rising fuel-to-oxidant ratio. The synthesized photocatalysts are evaluated for their efficacy in the MB dye degradation under visible light (λ ≥ 400 nm). The ZnFe2O4nanoparticles (GN−1ratio of 0.48 (Z1)) showed efficient photocatalytic activity up to 90.65% degradation of MB dye in 5 h (h). These results played a crucial role due to the formation of hydroxyl radicals (•OH) reactive species, leading to the efficient degradation of MB under visible light irradiation. ZnFe2O4(Z1) nanoparticles demonstrated excellent recyclability and stability study. The highly porous morphology as well as the reduced band gap enabled the photodegradation of MB dye. Also, this work highlights the influence of the fuel-to-oxidizer ratio for MB dye degradation under visible light. |
| Databáze: |
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