Article Abstract:
A report is presented on the synthesis of hollow Pt nanospheres by using bis(p-sulfonatophenyl)phenylphosphine (BSSP) to selectively remove the Ag cores of Ag-Pt core-shell nanoparticles. The measure higher specific activity of the Pt hollow nanospheres could be attributed unambiguously to the larger specific area prevalent in the porous hollow structure.
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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.
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Article Abstract:
The rapid progress made in the use of supercritical fluid (SCF) solvents for nanocrystal and nanowire synthesis, stabilization, and processing is presented. The current understanding of the potential applications and future limitations of SCF solvents is discussed.
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