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The Ethylhexanoate route to metal oxide nanocrystals : synthesis of CoO nanooctahedra from Co¹¹2-Ethylhexanoate
Epifani, Mauro (Istituto per la Microelettronica e i Microsistemi (Lecce, Itàlia))
Tang, PengYi (Institut Català de Nanociència i Nanotecnologia)
Genç, Aziz (Institut Català de Nanociència i Nanotecnologia)
Morante, Joan Ramon (Institut de Recerca en Energia de Catalunya)
Arbiol i Cobos, Jordi (Institut Català de Nanociència i Nanotecnologia)
Díaz, Raül (Instituto IMDEA Energía (Móstoles, Madrid))
Wicker, Susanne (Universität Tübingen. Institut für Physikalische und Theoretische Chemie)

Fecha: 2016
Resumen: CoO nanocrystals were prepared by solvothermal processing of Co 2-ethylhexanoate in oleylamine at 250 °C. The obtained products, identified as CoO by X-ray diffraction, had an octahedral shape, as seen by transmission electron microscopy, reflecting the cubic symmetry of the CoO crystallographic phase. The materials were converted into the CO₃0₄ phase after heat treatment at 400 °C. The nanocrystal evolution was investigated by FTIR spectroscopy. It was concluded that weak oleylamine bonding to the nanocrystal surface during the synthesis step favored the exchange with 2-ethylhexanoato ligands, and that the interplay between the two ligands favored the kinetic control of the growth, resulting in the finally observed octahedral morphology. The CO₃0₄ phase obtained from the heat treatment at 400 °C was used to process chemoresistive sensors, which were able to detect ethanol under dry and humid conditions (0 and 50 % r. h. HO at 25 °C) at low temperatures (100 °C).
Nota: Número d'acord de subvenció MINECO/MAT2014-59961-C2-2-R
Nota: Número d'acord de subvenció AGAUR/2014/SGR-1638
Derechos: Tots els drets reservats.
Lengua: Anglès.
Documento: article ; recerca ; acceptedVersion
Materia: Cobalt ; Nanoparticles ; Oxide nanocrystals ; Sensors ; Solvothermal processing
Publicado en: European journal of inorganic chemistry, Vol. 2016, issue 24 (Aug. 2016) , p. 3963-3968, ISSN 1099-0682

DOI: 10.1002/ejic.201600511


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Documentos de investigación > Documentos de los grupos de investigación de la UAB > Centros y grupos de investigación (producción científica) > Ciencias > Institut Català de Nanociència i Nanotecnologia (ICN2)
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 Registro creado el 2018-12-17, última modificación el 2019-08-27



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