Details

Autor(en) / Beteiligte

• Demortière, Arnaud
• Losno, Rémi
• Petit, Christophe
• Quisefit, Jean-Paul

Titel

Composition study of CoPt bimetallic nanocrystals of 2 nm

Ist Teil von

• Analytical and bioanalytical chemistry, 2010-06, Vol.397 (4), p.1485-1491

Ort / Verlag

Berlin/Heidelberg: Berlin/Heidelberg : Springer-Verlag

Erscheinungsjahr

2010

Quelle

MEDLINE

Beschreibungen/Notizen

• The synthesis of bimetallic alloy nanocrystals with a well-controlled relative composition is a real challenge and requires chemical analysis techniques with high accuracy. A new chemical route has been used to synthesize cobalt-platinum nanocrystals of 2-nm diameter in a wide range of relative stoichiometry. A study of the elemental composition of the nanoalloy was carried out by X-ray fluorescence (XRF) spectroscopy and energy-dispersive X-ray analysis. We have developed a set-up for XRF analysis using a silicon wafer as a support to determine the elemental composition with only a small amount of sample. The calibration step and the measurement capabilities are described. In a composition range of 25-75% cobalt, the results of both analytical methods are discussed and compared in detail.