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Título

Impregnation of carbon black for the examination of colloids using TEM

Autor Gontard, Lionel C. ; Knappett, Benjamin R.; Wheatley, Andrew E.H.; Chang, Shery L.-Y; Fernández-Camacho, A.
Fecha de publicación 2014
EditorElsevier
Citación Carbon, 76 :464-468 (2014)
ResumenNanoparticles are frequently synthesised as colloids, dispersed in solvents such as water, hexane or ethanol. For their characterisation by transmission electron microscopy (TEM), a drop of colloid is typically deposited on a carbon support and the solvent allowed to evaporate. However, this method of supporting the nanoparticles reduces the visibility of fine atomic details, particularly for carbonaceous species, due to interference from the 2-dimensional carbon support at most viewing angles. We propose here the impregnation of a 3 dimensional carbon black matrix that has been previously deposited on a carbon film as an alternative means of supporting colloidal nanoparticles, and show examples of the application of this method to advanced TEM techniques in the analysis of monometallic, core@shell and hybrid nanoparticles with carbon-based shells
Versión del editorhttp://dx.doi.org/10.1016/j.carbon.2014.05.006
URI http://hdl.handle.net/10261/103894
DOI10.1016/j.carbon.2014.05.006
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