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01.07.2012 | Research Paper

Aerogel–copper nanocomposites prepared using the adsorption of a polyfluorinated complex from supercritical CO₂

verfasst von: Selmi Erim Bozbag, Svetlana O. Kostenko, Michael A. Kurykin, Victor N. Khrustalev, Alexei R. Khokhlov, Lichun Zhang, Mark Aindow, Can Erkey

Erschienen in: Journal of Nanoparticle Research | Ausgabe 7/2012

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Abstract

A supercritical deposition method has been used to synthesize aerogel–copper nanocomposites. Carbon, resorcinol–formaldehyde, and silica aerogels (CAs, RFAs, and SAs) were impregnated with a new polyfluorinated copper precursor (CuDI6), which has a high solubility in supercritical carbon dioxide (scCO₂). Adsorption isotherms of CuDI6 onto various aerogels from scCO₂ were determined at 35 °C and 10.6 MPa using a batch method which is based on the measurement of the fluid phase concentration. The relative affinity between CuDI6 and different aerogels changed in the following order: CA > RFA > SA. The effect of temperature on the adsorption isotherms for the CuDI6–CO₂–CA system was also studied at 35 and 55 °C and at a CO₂ density of 736.1 kg/m³. The CuDI6 uptake at a particular CuDI6 concentration increased with increasing temperature. Adsorbed CuDI6 was found to convert into Cu and Cu/Cu₂O nanoparticles on the aerogel supports after chemical or thermal treatments at ambient pressure and at temperatures ranging from 200 to 400 °C.

Vorheriger Artikel Gram-scale synthesis of highly crystalline, 0-D and 1-D SnO2 nanostructures through surfactant-free hydrothermal process

Nächster Artikel Theoretical evaluations of magnetic nanoparticle-enhanced heating on tumor embedded with large blood vessels during hyperthermia

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Titel: Aerogel–copper nanocomposites prepared using the adsorption of a polyfluorinated complex from supercritical CO2
verfasst von: Selmi Erim Bozbag
Svetlana O. Kostenko
Michael A. Kurykin
Victor N. Khrustalev
Alexei R. Khokhlov
Lichun Zhang
Mark Aindow
Can Erkey
Publikationsdatum: 01.07.2012
Verlag: Springer Netherlands
Erschienen in: Journal of Nanoparticle Research / Ausgabe 7/2012
Print ISSN: 1388-0764
Elektronische ISSN: 1572-896X
DOI: https://doi.org/10.1007/s11051-012-0973-7

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