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Insights into the chemistry of bismuth nanoparticles

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Abstract

Enhancement of the thermoelectric properties of bismuth due to size reduction has prompted a large body of studies and recent interest in the nanochemistry of this material. The size control at the nanometer scale is complicated because of bismuth's low melting point and little known surface chemistry. We report herein an efficient synthetic method producing bismuth nanoparticles (Bi NPs) of sizes below 10 nm, and of rhombohedral structure based on transmission electron microscopy (TEM) and wide angle X-ray scattering (WAXS) analysis. The nature and dynamics of the ligands at their surface have been investigated by infrared spectroscopy (IR) and nuclear magnetic resonance (NMR) spectroscopy. We demonstrate that alkynyl ligands, seldom used in nanochemistry, efficiently coordinate at the surface and afford stable Bi NPs that can be easily purified, leading to powders with high bismuth payload which can be redispersed into stable colloidal solutions.

Graphical abstract: Insights into the chemistry of bismuth nanoparticles

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Publication details

The article was received on 19 Apr 2017, accepted on 24 May 2017 and first published on 24 May 2017


Article type: Paper
DOI: 10.1039/C7NJ01308F
Citation: New J. Chem., 2017, Advance Article
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    Insights into the chemistry of bismuth nanoparticles

    M. Branca, K. Corp, D. Ciuculescu-Pradines, Y. Coppel, P. Lecante and C. Amiens, New J. Chem., 2017, Advance Article , DOI: 10.1039/C7NJ01308F

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