Deposition of colloidal hematite onto mercury from water-ethanol mixtures

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The adherence of hematite (αFe2O3) particles onto mercury electrodes in water-ethanol mixtures has been studied by counting using optical microscope images. The number of attached particles, when the ethanol content is small, decreases as the ethanol concentration increases. At a mole fraction of et...

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Autores principales: Andrade, E.M., Molina, F.V., Posadas, D.
Formato: JOUR
Materias:
Hematite adhesion
Metal surface
Water-ethanol mixtures
Acceso en línea:http://hdl.handle.net/20.500.12110/paper_01035053_v8_n4_p371_Andrade
Aporte de:
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires
id todo:paper_01035053_v8_n4_p371_Andrade
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spelling todo:paper_01035053_v8_n4_p371_Andrade2023-10-03T14:57:31Z Deposition of colloidal hematite onto mercury from water-ethanol mixtures Andrade, E.M. Molina, F.V. Posadas, D. Hematite adhesion Metal surface Water-ethanol mixtures The adherence of hematite (αFe2O3) particles onto mercury electrodes in water-ethanol mixtures has been studied by counting using optical microscope images. The number of attached particles, when the ethanol content is small, decreases as the ethanol concentration increases. At a mole fraction of ethanol near to 0.2, the number of particles goes through a minimum and then it increases with ethanol concentration. When the electrode potential is modified, curves of the number of particles vs. ethanol mole fraction with the same shape are found, but which cross each other. The dependence on the ethanol concentration can be explained based on the dependence of particle/solution and metal/solution interaction energies with the solvent composition. Fil:Andrade, E.M. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Molina, F.V. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. JOUR info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/2.5/ar http://hdl.handle.net/20.500.12110/paper_01035053_v8_n4_p371_Andrade
institution Universidad de Buenos Aires
institution_str I-28
repository_str R-134
collection Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
topic Hematite adhesion
Metal surface
Water-ethanol mixtures
spellingShingle Hematite adhesion
Metal surface
Water-ethanol mixtures
Andrade, E.M.
Molina, F.V.
Posadas, D.
Deposition of colloidal hematite onto mercury from water-ethanol mixtures
topic_facet Hematite adhesion
Metal surface
Water-ethanol mixtures
description The adherence of hematite (αFe2O3) particles onto mercury electrodes in water-ethanol mixtures has been studied by counting using optical microscope images. The number of attached particles, when the ethanol content is small, decreases as the ethanol concentration increases. At a mole fraction of ethanol near to 0.2, the number of particles goes through a minimum and then it increases with ethanol concentration. When the electrode potential is modified, curves of the number of particles vs. ethanol mole fraction with the same shape are found, but which cross each other. The dependence on the ethanol concentration can be explained based on the dependence of particle/solution and metal/solution interaction energies with the solvent composition.
format JOUR
author Andrade, E.M.
Molina, F.V.
Posadas, D.
author_facet Andrade, E.M.
Molina, F.V.
Posadas, D.
author_sort Andrade, E.M.
title Deposition of colloidal hematite onto mercury from water-ethanol mixtures
title_short Deposition of colloidal hematite onto mercury from water-ethanol mixtures
title_full Deposition of colloidal hematite onto mercury from water-ethanol mixtures
title_fullStr Deposition of colloidal hematite onto mercury from water-ethanol mixtures
title_full_unstemmed Deposition of colloidal hematite onto mercury from water-ethanol mixtures
title_sort deposition of colloidal hematite onto mercury from water-ethanol mixtures
url http://hdl.handle.net/20.500.12110/paper_01035053_v8_n4_p371_Andrade
work_keys_str_mv AT andradeem depositionofcolloidalhematiteontomercuryfromwaterethanolmixtures
AT molinafv depositionofcolloidalhematiteontomercuryfromwaterethanolmixtures
AT posadasd depositionofcolloidalhematiteontomercuryfromwaterethanolmixtures
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