One-pot synthesis of cobalt-rhenium nanoparticles taking the unusual β-Mn type structure

Eirini Zacharaki; G Marien Bremmer; Ponniah Vajeeston; Maria Kalyva; Helmer Fjellvåg; Patricia J Kooyman; Anja O Sjåstad

doi:10.1039/d0na00097c

One-pot synthesis of cobalt-rhenium nanoparticles taking the unusual β-Mn type structure

Nanoscale Adv. 2020 Apr 7;2(5):1850-1853. doi: 10.1039/d0na00097c. eCollection 2020 May 19.

Authors

Eirini Zacharaki¹, G Marien Bremmer², Ponniah Vajeeston¹, Maria Kalyva¹, Helmer Fjellvåg¹, Patricia J Kooyman³, Anja O Sjåstad¹

Affiliations

¹ Centre for Materials Science and Nanotechnology, Department of Chemistry, University of Oslo P. O. Box 1033 N-0315 Oslo Norway a.o.sjastad@kjemi.uio.no.
² Leiden Institute of Physics, Leiden University P. O. Box 9502 2300 RA Leiden The Netherlands.
³ Department of Chemical Engineering, University of Cape Town Private Bag X3 7701 Rondebosch South Africa.

Abstract

Using a facile one-pot colloidal method, it is now possible to obtain monodisperse Co_1-x Re _x nanoparticles (NPs), with excellent control of Re stoichiometry for x < 0.15. Re-incorporation in terms of a solid solution stabilizes the β-Mn polymorph relative to the hcp/ccp variants of cobalt. The NPs are thermally stable up to 300 °C, which may make them attractive as model catalysts.