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Synthesis of Metal and Metal Oxide Nanowire and Nanotube Arrays within a Mesoporous Silica Template (CROSBI ID 197956)

Prilog u časopisu | izvorni znanstveni rad | međunarodna recenzija

Crowley, Timothy A. ; Ziegler, Kirk J. ; Lyons, Daniel Mark ; Erts, Donats ; Olin, Hakan ; Morris, Michael A. ; Holmes, Justin D. Synthesis of Metal and Metal Oxide Nanowire and Nanotube Arrays within a Mesoporous Silica Template // Chemistry of materials, 15 (2003), 18; 3518-3522. doi: 10.1021/cm034139v

Podaci o odgovornosti

Crowley, Timothy A. ; Ziegler, Kirk J. ; Lyons, Daniel Mark ; Erts, Donats ; Olin, Hakan ; Morris, Michael A. ; Holmes, Justin D.

engleski

Synthesis of Metal and Metal Oxide Nanowire and Nanotube Arrays within a Mesoporous Silica Template

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.

nanowire; nanotube; cobalt; mesoporous

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Podaci o izdanju

15 (18)

2003.

3518-3522

objavljeno

0897-4756

10.1021/cm034139v

Povezanost rada

Kemija

Poveznice
Indeksiranost