Journal
APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING
Volume 128, Issue 12, Pages -Publisher
SPRINGER HEIDELBERG
DOI: 10.1007/s00339-022-06244-y
Keywords
BaCo2Fe16O27; Hexaferrite; Nanoparticles; The removal efficiency
Funding
- Science, Technology & Innovation Funding Authority (STDF)
- Egyptian Knowledge Bank (EKB)
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W-hexaferrite BaCo2Fe16O27 with excellent magnetic and adsorption properties was successfully synthesized using the citrate nitrate combustion method. It showed ferrimagnetic behavior and high removal efficiency for heavy metal Pb2+ in water.
W-hexaferrite BaCo2Fe16O27 was prepared using the citrate nitrate combustion method. The sample was characterized using XRD, SEM, EDX and elemental mapping. XRD confirmed that the sample was synthesized in a single phase hexagonal structure with an average crystallite size 37.39 nm. SEM images of the sample show a spongy morphology with the agglomerated grain owing to dipole interaction between the crystallites. The magnetic properties of BaCo2Fe16O27 were studied using H-M hysteresis loop and the DC magnetic susceptibility. The sample has a ferrimagnetic behavior with saturation magnetization 64.133 emu/g. The magnetic properties of BaCo2Fe16O27 are originated from the Fe3+-O-Fe3+ superexchange. The synthesized sample is used as an adsorbent to remove the heavy metal Pb2+ from water. BaCo2Fe16O27 has Pb2+ removal efficiency 99% and 28% at pH 8 and 7 respectively. The Langmuir and Freundlich isotherms were used to analyze the experimental data. The Freundlich adsorption isotherm fitted the experimental data well.
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