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Synthesis of metal and metal oxide nanowires and nanotube arrays within a mesoporous silica template
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2003 (English)In: Chemistry of Materials, ISSN 0897-4756, Vol. 15, no 18, 3518-3522 p.Article in journal (Refereed) Published
Abstract [en]

Metallic nanowires of cobalt, copper, and iron oxide magnetite (Fe3O4) have been synthesized within the pores of mesoporous silica using a supercritical fluid inclusion technique. The mesoporous matrix provides a means of producing a high density of stable, hexagonally ordered arrays of highly crystalline nanowires. The formation of the metal and metal oxide nanowires within the silica mesopores was confirmed by transmission electron microscopy (TEM), N2 adsorption experiments, and powder X-ray diffraction (PXRD). The mechanism of nanowire formation within the mesopores appears to occur through the initial binding and coating of the pore walls with the metal atoms to form tubelike structures within the mesoporous template. The thickness of these tubes subsequently increases with further metal deposition until nanowires are formed. Additionally, the crystal structure of the cobalt nanowires formed within the mesoporous template can be readily changed by manipulating the density of the supercritical fluid phase.

 

Place, publisher, year, edition, pages
2003. Vol. 15, no 18, 3518-3522 p.
Keyword [en]
nanotechnology nanoscience nanowires
National Category
Natural Sciences
Identifiers
URN: urn:nbn:se:miun:diva-2235DOI: 10.1021/cm034139vLocal ID: 1385OAI: oai:DiVA.org:miun-2235DiVA: diva2:27267
Available from: 2008-09-30 Created: 2008-09-30 Last updated: 2013-08-23Bibliographically approved

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Olin, Håkan
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