TY  - JOUR
AU  - Schütte, K.
AU  - Meyer, H.
AU  - Gemel, Chr.
AU  - Barthel, Juri
AU  - Fischer, R. A.
AU  - Janiak, Chr.
TI  - Synthesis of Cu, Zn and Cu/Zn brass alloy nanoparticles from metal amidinate precursors in ionic liquids or propylene carbonate with relevance to methanol synthesis
JO  - Nanoscale
VL  - 6
IS  - 6
SN  - 2040-3364
CY  - Cambridge
PB  - RSC Publ.
M1  - FZJ-2014-01649
SP  - 3116 - 3126
PY  - 2014
AB  - Microwave-induced decomposition of the transition metal amidinates {[Me(C(NiPr)2)]Cu}2 (1) and [Me(C(NiPr)2)]2Zn (2) in the ionic liquid 1-butyl-3-methylimidazolium tetrafluoroborate ([BMIm][BF4]) or in propylene carbonate (PC) gives copper and zinc nanoparticles which are stable in the absence of capping ligands (surfactants) for more than six weeks. Co-decomposition of 1 and 2 yields the intermetallic nano-brass phases β-CuZn and γ-Cu3Zn depending on the chosen molar ratios of the precursors. Nanoparticles were characterized by high-angle annular dark field-scanning transmission electron microscopy (HAADF-STEM), dynamic light scattering and powder X-ray diffractometry. Microstructure characterizations were complemented by STEM with spatially resolved energy-dispersive X-ray spectrometry and X-ray photoelectron spectroscopy. Synthesis in ILs yields significantly smaller nanoparticles than in PC. β-CuZn alloy nanoparticles are precursors to catalysts for methanol synthesis from the synthesis gas H2/CO/CO2 with a productivity of 10.7 mol(MeOH) (kg(Cu) h)−1.
LB  - PUB:(DE-HGF)16
UR  - <Go to ISI:>//WOS:000332604200016
DO  - DOI:10.1039/C3NR05780A
UR  - https://juser.fz-juelich.de/record/151760
ER  -