Nanocrystal arrested precipitation in supercritical carbon dioxide

Article Abstract:

Flurocarbon-coated silver, iridium, and platinum nanocrystals ranging in size from 20 to 120 A in diameter are synthesized in supercritical (sc)-CO2 by arrested perception from soluble organometallic precursors. The synthesis is performed in a single CO2 phase by reduction with H2 at elevated temperatures ranging from 60 degree to 100 degree Celsius.

Platinum, Silver, Iridium

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CO2 adsorption on alpha-Cr(sub 2)O(sub 3) (1012) surfaces

Article Abstract:

CO2 adsorption is studied on the well-defined Cr(sub 2)O(sub 3) (1012) single-crystal surface to examine the validity of the using CO2 as a probe of surface basicity. The differences ion the coordination makes the heats of adsorption a poor measure of the basicity of surface oxide ions.

Chromium, Ions

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Solvent density-dependent steric stabilization of perfluoropolyether-coated nanocrystals in supercritical carbon dioxide

Article Abstract:

Gold nanocrystals are synthesized with coatings of thiolated perfluoropolyether ligands. These nanocrystals are dispersed in supercritical carbon dioxide.

Gold, Ligands, Ligands (Chemistry)

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