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Issue 32, 2015
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[Au5Mes5]: improved gram-scale synthesis and its use as a convenient precursor for halide-free supported gold nanoparticles

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Abstract

A simple one-step and gram-scale synthesis of [Au5Mes5] from AuCl3 was developed, and this molecular precursor was used to generate Au nanoparticles on SiO2 and Al2O3. While [Au5Mes5] does not react with surface silanols and is only physisorbed, its incipient wetness impregnation followed by H2 treatment leads to a narrow size distribution of 1.4 nm Au nanoparticles. In contrast, [Au5Mes5] reacts with partially dehydroxylated Al2O3 to directly yield 1 nm Au nanoparticles along with adsorbed species. A subsequent treatment under hydrogen leads to a narrow size distribution of smaller 0.8 nm Au particles.

Graphical abstract: [Au5Mes5]: improved gram-scale synthesis and its use as a convenient precursor for halide-free supported gold nanoparticles

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Publication details

The article was received on 15 Apr 2015, accepted on 30 Jun 2015 and first published on 06 Jul 2015


Article type: Paper
DOI: 10.1039/C5DT01432H
Author version available: Download Author version (PDF)
Citation: Dalton Trans., 2015,44, 14349-14353
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    [Au5Mes5]: improved gram-scale synthesis and its use as a convenient precursor for halide-free supported gold nanoparticles

    G. Siddiqi, V. Mougel and C. Copéret, Dalton Trans., 2015, 44, 14349
    DOI: 10.1039/C5DT01432H

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