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Current Topics in Analytical Chemistry   Volumes    Volume 15 
Magnetic solid phase extraction of Co3O4@Fe3O4 nanoflowers for the enrichment of Cr6+ ions
Şeyma Korkmaz, Nurdan Kurnaz Yetim, Elvan Hasanoğlu Özkan, Cemile Özcan
Pages: 13 - 24
Number of pages: 12
Current Topics in Analytical Chemistry
Volume 15 

Copyright © 2023 Research Trends. All rights reserved

In this study, magnetic cobalt(II/III)oxide@iron (II/III)oxide (Co3O4@Fe3O4) nanoflowers were grown by hydrothermal synthesis technique to use them for the removal of Cr6+ ion in real samples. X-ray diffraction analysis (XRD) and scanning electron microscopy (SEM) were used to characterize the morphology and chemical composition of Co3O4@Fe3O4 nanoflowers. Flame atomic absorption spectrometry (FAAS) was used for Cr6+ analysis in the adsorption study. The optimum conditions (eluent concentration and type, pH of the solution, adsorbent material amount, solution volume and sonication period) were determined for the removal of metals. Co3O4@Fe3O4 nanoflower provided 53.3-fold enrichment of the plant samples. Co3O4@Fe3O4 nanoflowers managed to achieve 99.3% Cr6+ recovery rate in 10 mL eluent volume, for optimum condition. As a result, it is predicted that Co3O4@Fe3O4 nanoflowers have a high adsorption capacity and can be used as an efficient adsorbent material for waste removal.
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