XAS/EXAFS studies of Ge nanoparticles produced by reaction between Mg{sub 2}Ge and GeCl{sub 4}

Journal Article · Thu Sep 15 00:00:00 EDT 2011 · Journal of Solid State Chemistry

DOI:https://doi.org/10.1016/j.jssc.2011.06.020· OSTI ID:21580233

Pugsley, Andrew J ^[1]; Bull, Craig L ^[2]; Sella, Andrea; Sankar, Gopinathan ^[1]

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1. Department of Chemistry and Materials Chemistry Centre, University College London, 20 Gordon Street, London WC1H 0AJ (United Kingdom)
2. SUPA, School of Physics and Astronomy and Centre for Science at Extreme Conditions, University of Edinburgh, Mayfield Road, EH9 3JZ (United Kingdom)

We present results of an XAS and EXAFS study of the synthesis of Ge nanoparticles formed by a metathesis reaction between Mg{sub 2}Ge and GeCl{sub 4} in diglyme (diethylene glycol dimethyl ether). The progress of the formation reaction and the products formed at various stages in the processing was characterised by TEM and optical spectroscopy as well as in situ XAS/EXAFS studies using specially designed reaction cells. - Graphical abstract: Nano-Ge particles 2-10 nm in diameter were prepared by reaction between Mg{sub 2}Ge Zintl phase and GeCl{sub 4} in diglyme followed by capping with BuLi and extraction into hexane. We used synchrotron X-ray absorption spectroscopy (XAS) at the Ge K edge with analysis of the EXAFS region combined with room temperature photoluminescence and TEM to characterise the nature of the nanoparticles and model compounds and to follow the course of the reaction. A TEM image of the germanium nanoparticles is shown. Highlights: > In situ characteristaion of germanium nanoparticles. > X-ray spectroscopic technique development. > Improving quality of nanoparticles grown by metathesis route.

• OSTI ID: 21580233
• Journal Information: Journal of Solid State Chemistry, Vol. 184, Issue 9; Other Information: DOI: 10.1016/j.jssc.2011.06.020; PII: S0022-4596(11)00346-X; Copyright (c) 2011 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved.; ISSN 0022-4596
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC
ORGANIC
PHYSICAL AND ANALYTICAL CHEMISTRY
ABSORPTION SPECTROSCOPY
FINE STRUCTURE
GERMANIUM
GERMANIUM CHLORIDES
METHYL ETHER
NANOSTRUCTURES
PARTICLES
PHOTOLUMINESCENCE
SYNTHESIS
TRANSMISSION ELECTRON MICROSCOPY
X RADIATION
X-RAY SPECTROSCOPY
CHLORIDES
CHLORINE COMPOUNDS
ELECTROMAGNETIC RADIATION
ELECTRON MICROSCOPY
ELEMENTS
EMISSION
ETHERS
GERMANIUM COMPOUNDS
HALIDES
HALOGEN COMPOUNDS
IONIZING RADIATIONS
LUMINESCENCE
METALS
MICROSCOPY
ORGANIC COMPOUNDS
ORGANIC OXYGEN COMPOUNDS
PHOTON EMISSION
RADIATIONS
SPECTROSCOPY