Superparamagnetic NiFe2O4 Nanoparticles to Remove Arsenic From Drinking Water

Superparamagnetic NiFe2O4 Nanoparticles to Remove Arsenic From Drinking Water

Köseoğlu, Yüksel

Superparamagnetic nanoparticles of nickel ferrite (NiFe2O4) were produced by PEG assisted hydrothermal method. XRD, FT-IR, TEM and VSM were used for the structural, morphological, and magnetic investigation of the product, respectively. Average particle size of the nanoparticles was estimated by the Scherrer equation using the full-width at half maximum (FWHM) of the most intense XRD peak and found as 14 nm. While the nanoparticles indicate a superparamagnetic behavior above the blocking temperature of 72 K, they have ferromagnetic behavior at temperatures lower than the blocking temperature. These nanoparticles were dispersed into drinking water contaminated with arsenic (As), and once they bind to arsenic, they have been removed from the water solution using a strong magnet. The results were measured by Atomic Mass Spectrometry and found that these nanoparticles had removed 90 % of the arsenic. The measurements were repeated several times with the same sample and get almost the same results.

Conference or Workshop Item
PeerReviewed

2010-06

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