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      Effects of the synthetic method on the particle size and purity of magnetite Translated title: Efecto del método de síntesis en el tamaño de partícula y pureza de la magnetita

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          Abstract

          The characterization of magnetites synthesized by methods reported with some modifications is presented. The influence on purity and particle size of the obtained oxides is discussed. The samples were characterized by Mössbauer Spectroscopy at room temperature, particle size analysis by light scattering and by transmission electron microscopy of naked particles. The results showed that depending on the method of synthesis there are variations on stoichiometry and composition of magnetites, being this difference more important when the rate of addition of the alkaline solution to the combined ferrous and dispersant solution is changed. Moreover, it has been found strong agglomeration evidenced by TEM, however the sizes of the individual crystallites are in the nanometer scale.

          Translated abstract

          Se presenta la evaluación de magnetitas sintetizadas bajo diferentes condiciones reportadas en la literatura y con algunas modificaciones, su influencia en la pureza y en el tamaño de partícula de los óxidos obtenidos. Las muestras se caracterizaron mediante espectroscopía Mössbauer a temperatura ambiente, análisis por dispersión de luz y microscopía electrónica de transmisión. Los resultados Mössbauer mostraron variaciones estequiométricas y de composición, que fueron más notables cuando una combinación de solución ferrosa y dispersante se agregó rápidamente a una solución alcalina. Además, se encontró que el tamaño de partícula también cambia dependiendo del método de síntesis.

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          Most cited references27

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          Effect of initial pH and temperature of iron salt solutions on formation of magnetite nanoparticles

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            Magnetic and conductive Fe3O4–polyaniline nanoparticles with core–shell structure

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              Magnetic field synthesis of Fe3O4 nanoparticles used as a precursor of ferrofluids

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                Author and article information

                Contributors
                Role: ND
                Role: ND
                Role: ND
                Journal
                rfiua
                Revista Facultad de Ingeniería Universidad de Antioquia
                Rev.fac.ing.univ. Antioquia
                Facultad de Ingeniería, Universidad de Antioquia (Medellín )
                0120-6230
                December 2009
                : 0
                : 50
                : 9-16
                Affiliations
                [1 ] Universidad de Antioquia Colombia
                Article
                S0120-62302009000400001
                348fb64b-3fd7-4dea-bfee-fc871fa7f5e4

                http://creativecommons.org/licenses/by/4.0/

                History
                Product

                SciELO Colombia

                Self URI (journal page): http://www.scielo.org.co/scielo.php?script=sci_serial&pid=0120-6230&lng=en
                Categories
                ENGINEERING, MULTIDISCIPLINARY

                General engineering
                Magnetite synthesis,magnetite characterization,nanometric magnetite,magnetita nanoparticulada,Síntesis de magnetita,espectroscopía Mössbauer,tamaño de partícula

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