Abstract
CeO2 nanoparticle-loaded chitosan-bocglycine zinc complex was synthesized and characterized by UV–Visible, FT-IR, Powder XRD, and SEM–EDX analysis. From the XRD analysis, the crystal structure was studied and the approximate nanoparticle size of the CeO2 was calculated to be 22 nm. The UV–Visible spectrum has detected the presence of CeO2 nanoparticles by appearing corresponding intense peaks. The stretching frequency of the Ce-O bond was detected by the FT-IR peak at 720 cm−1. The SEM graph showed spherical morphology and uniform distribution of nanoparticles of both pure CeO2 and CeO2 nanocomposites. The photocatalytic degradation of picric acid (PA) with a nanocomposite as photocatalyst combined with Fenton’s process was studied under UV light (254/365/395 nm), visible, and sunlight at different pH values (2.5, 7, and 10.5). It is observed that the degradation of PA (pH2.5) under sunlight was very high and reached 100% within 35 min. The experiment was also repeated with pure photocatalyst (CeO2-loaded chitosan-bocglycine zinc complex), Fenton’s reagent (Fe2+/H2O2), and combined with both under sunlight at a pH value of 2.5, a time interval of 40 min. The experimental results confirmed that under sunlight the degradation of picric acid (pH2.5) with pure photocatalyst is reached up to 20%, with Fenton’s reagent, it is reached up to 45% but when photocatalyst and Fenton’s reagent both are combined, it is reached up to 100%. It is concluded that the degradation of PA was more efficient under sunlight with a combination of both our prepared photocatalyst and Fenton’s reagent.
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Mahender Rao, A., Suresh, D., Sribalan, R. et al. Nano-CeO2-loaded chitosan-bocglycine zinc complex for the photocatalytic degradation of picric acid by the combination of Fenton’s reagent. Appl. Phys. A 128, 742 (2022). https://doi.org/10.1007/s00339-022-05841-1
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DOI: https://doi.org/10.1007/s00339-022-05841-1