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- W2976720291 abstract "Abstract Magnetic nanomaterials have been widely studied as adsorbents in the removal of contaminants from effluents. In this context, lanthanum-doped cobalt ferrites (CoLaxFe2-xO4) were successfully synthesized via sol-gel method at 300 °C. XRD, TEM and BET analyses showed that minute particle size was achieved, with decreases along increasing La3+ content. XRD patterns confirm single cubic spinel CoFe2O4 nanoparticles. The average crystallite size confirmed via TEM images ranges between 5 nm and 12 nm. Surface area increased from 74.3 to 109.3 m2 g−1 with the addition of La3+. Raman spectra indicate a tendency towards inversion of the spinel induced by the addition of the lanthanide. The optical band gap of the samples doped with La showed a progressive decrease from 1.35 to 1.1 eV, which was not expected. Hysteresis loops indicate a transition from hard to soft magnetism. A significant decrease in coercivity from 740 to 158 Oe was observed with increase in La3+ (CoFe2O4 to CoLa0.025Fe1.975O4). Total magnetization (M* defined for maximum available field H = 20 kOe) decayed from 44.6 to 29.0 emu.g−1. These results show that the produced nanoparticles are ideally suited as magnetic adsorbents in separation of pollutants from wastewater." @default.
- W2976720291 created "2019-10-03" @default.
- W2976720291 creator A5045588913 @default.
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- W2976720291 date "2020-02-01" @default.
- W2976720291 modified "2023-10-01" @default.
- W2976720291 title "Lanthanum-doped spinel cobalt ferrite (CoFe2O4) nanoparticles for environmental applications" @default.
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- W2976720291 doi "https://doi.org/10.1016/j.ceramint.2019.09.266" @default.
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