Abstract
Background
Photodegradation of organic pollutants is considered to be the most suitable and cheaper technique to counter the decontamination issues. Metal nanoparticles are considered to be the most effective heterogeneous photocatalysts for photodegradation of organic pollutants. Besides, iron oxide nanoparticles are well-known photocatalysts for degrading organic pollutants.
Methods
We reported the synthesis of neat iron oxide nanoparticles (Fe3O4 NPs) and zirconia supported iron oxide nanoparticles (Fe3O4/ZrO2 NPs) by facile chemical reduction technique for photodegradation ofa toxic azo dye namely methyl red.
Results
The XRD and FTIR analysis has demonstrated a crystalline phase Fe3O4 NPs. The morphological features via scanning electronic microscopy (FESEM) suggested agglomerated morphology of neat Fe3O4 NPs with 803.54 ± 5.11 nm average particle size and revealed the uniform morphology and homogenous dispersion of Fe3O4 NPs over ZrO2 surface in Fe3O4/ZrO2 nanocomposite. A polydispersity index (PDI) of 0.47 showed sufficient variations in the particle size of neat Fe3O4 NPs, which is also supported by the results obtained from atomic force microscopy (AFM), FESEM and Transmission Electron Microscopy (TEM). Fe3O4/ZrO2 NPs demonstrated efficient methyl red degradation over a short period of time under simulated light and degraded about ~ 91.0 ± 1.0% and 87.0 ± 1.0% dye in 40 min, under UV and visible light, respectively.
Conclusion
The excellent photodegradation efficacy and sustainability of Fe3O4/ZrO2 NPs can be attributed to the homogenous distribution of Fe3O4 NPs over ZrO2, which facilitates the generation of photoexcitons (electrons and holes), enhanced charge transfer and minimize the charge recombination.
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The authors acknowledge the department of Chemistry, Bacha Khan University Charsadda Pakistan, for providing research facilities and characterization tools.
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Khan, I., Zada, N., Khan, I. et al. Enhancement of photocatalytic potential and recoverability of Fe3O4 nanoparticles by decorating over monoclinic zirconia. J Environ Health Sci Engineer 18, 1473–1489 (2020). https://doi.org/10.1007/s40201-020-00563-z
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DOI: https://doi.org/10.1007/s40201-020-00563-z