Abstract
Iron nanoparticles with dynamic light scattering median diameter around 10 nm have been prepared by thermal decomposition under a nitrogen atmosphere from diironnonacarbonyl (DINC) dissolved in n-butyl-3-methylimidazolium tetrafluoroborate (BMIMBF). The effect of temperature changes in the range of 170°C - 200°C and changes in concentration of DINC in BMIMBF in the range of 0.1% - 0.9% on the properties of obtained iron nanoparticles has been investigated. The stable dispersion of iron nanoparticle in ethanol has been prepared after separation of nanoparticles from ionic liquid by centrifugation following by their re-dispersion in ethanol. The possibility of quantitative analysis of iron content in ethanol dispersion by deposition of ferromagnetic nanoparticles on the surface of plastic-protected neodymium magnet, dissolution of iron in hydrochloric acid and addition of ammonium thiocyanate solution following by spectrophotometric determination of iron cations at wavelength of 490 nm has been investigated. The feasibility of using the same approach in case of addition of ethanol dispersion of iron nanoparticles to the liquid animal feeds for evaluation of efficiency of their mixing has been discussed.
Highlights
In recent years, the ionic liquids (ILs) have been extensively evaluated as environmental-friendly or “green” alternatives to conventional organic solvents for synthesis of nanoparticles [1]
Iron nanoparticles with dynamic light scattering median diameter around 10 nm have been prepared by thermal decomposition under a nitrogen atmosphere from diironnonacarbonyl (DINC) dissolved in n-butyl-3-methylimidazolium tetrafluoroborate (BMIMBF)
The authors followed several narratives in this investigation: 1) influence of the temperature conditions on the size and properties of formed nanoparticles; 2) influence of concentration of DINC in BMIMBF on those parameters; 3) possibility to create a stable dispersion of iron nanoparticles in the liquid animal feeds; 4) feasibility of quantitative analysis of iron nanoparticles magnetically retrieved from the liquid feeds and its applicability for evaluation of the quality of mixing
Summary
The ionic liquids (ILs) have been extensively evaluated as environmental-friendly or “green” alternatives to conventional organic solvents for synthesis of nanoparticles [1]. Iron nanoparticles have been prepared by thermal decomposition under a nitrogen atmosphere from diironnonacarbonyl (DINC) dissolved in n-butyl-3-methylimidazolium tetrafluoroborate (BMIMBF) [8]. Fe2(CO) has been successfully used to dope carbon nanotubes with iron and to construct iron nanowires used for magneto-resistance and spintronic devices [9] [10]. The authors followed several narratives in this investigation: 1) influence of the temperature conditions on the size and properties of formed nanoparticles; 2) influence of concentration of DINC in BMIMBF on those parameters; 3) possibility to create a stable dispersion of iron nanoparticles in the liquid animal feeds; 4) feasibility of quantitative analysis of iron nanoparticles magnetically retrieved from the liquid feeds and its applicability for evaluation of the quality of mixing
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