SYNTHESIS OF IRON AND IRON-MANGANESE COLLOIDS AND NANOPARTICLES USING ORGANIC SOLVENTS

dc.creatorCARDENAS T,GALO
dc.creatorDELGADO G,VIVIANA
dc.creatorACUÑA E,JOSE
dc.creatorLIMA,CARLOS A.S.
dc.date2005-06-01
dc.date.accessioned2017-03-07T15:25:24Z
dc.date.available2017-03-07T15:25:24Z
dc.identifierhttp://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-97072005000200003
dc.identifier.urihttp://repositorioslatinoamericanos.uchile.cl/handle/2250/384721
dc.descriptionManganese, iron colloids and iron-manganese bicolloids were prepared by cocondensation of the metal at 77K with ethanol, 2-propanol, 1,2-dimethoxyethane, 2-methoxyethanol and acetone. The distribution of particle sizes was determined by transmission electron microscopy of the most stable dispersions. Electrophoretic measurements such as colloid charge and zeta potential were achieved. lt was found that the colloids possess electrical charge, therefore it is postulated that their stability is by simple solvatation. The colloids showed instability at room temperature. In some colloids absorption bands in the UV region were observed. In the visible region no plasma absorption was found. Active solids obtained by evaporation of the solvent contain certain amount of the solvent incorporated, and due to their reactivity they produce a mixture with manganese oxide and iron oxide. The X-ray of the powders of Fe-Mn-2-methoxyethanol does not allow to conclude about the alloyed composition. The presence of solvents can be observed by FT-IR incorporation in the finely divided solids. Characteristic bands for each solvent were measured. By means of thermogravimetric analysis and DSC the thermal stability of the solids and the transition heat give us the carbonaceous residues in the films. The elemental analysis of the powders was carried out
dc.formattext/html
dc.languageen
dc.publisherSociedad Chilena de Química
dc.sourceJournal of the Chilean Chemical Society v.50 n.2 2005
dc.subjectA. Nanostructures
dc.subjectA. colloids
dc.subjectmicroscopy
dc.subjectC. infrared microscopy
dc.subjectB. vapor deposition
dc.subjectC . electron microscopy
dc.subjectD. infrared microscopy
dc.titleSYNTHESIS OF IRON AND IRON-MANGANESE COLLOIDS AND NANOPARTICLES USING ORGANIC SOLVENTS
dc.typeArtículos de revistas


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