Abstract
The recently synthesized mono- and bimetallic Fe and Mn oxides supported zeolite of clinoptilolite type, characterized with FT-IR, XRD, SEM–EDS and XPS spectroscopy, confirmed the occurrence of a new MnO2 phase (pyrolusite, birnessite) including mostly amorphous iron oxi(hydr)oxide FeO(OH) species on the surface. The product validated a much higher adsorption capacity toward Zn-65 pollutant compared to the natural clinoptilolite. The following order, beginning with a decreasing maximum adsorption capacity a(max) toward Zn-65 was found: MnOx-zeolite (35.1 mg/g) > FeO(OH)-MnOx-zeolite (23.5 mg/g) > FeO(OH)-zeolite (12.9 mg/g) > natural zeolite (8 mg/g).
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Acknowledgements
XPS analyses were financed by a statutory grant allocation from the Polish Ministry of Science and Higher Education to the Faculty of Chemistry of Wrocław University of Science and Technology. The authors express a great thank for the support.
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Chmielewská, E., Tylus, W. A potential refinement of water endangered with Zn-65 onto modified zeolite. J Radioanal Nucl Chem 327, 31–37 (2021). https://doi.org/10.1007/s10967-020-07504-y
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DOI: https://doi.org/10.1007/s10967-020-07504-y