期刊
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
卷 14, 期 22, 页码 8170-8178出版社
ROYAL SOC CHEMISTRY
DOI: 10.1039/c2cp40482f
关键词
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资金
- Research Center on Metal-Support Interaction in Heterogeneous Catalysis [SFB-558, TP B10]
- Research Department Interfacial Systems Chemistry (IFSC) at Ruhr University Bochum
- Egypt Government
- Fund for Scientific Research Flanders (FWO)
- Hercules foundation
- ERC
Stearate@Cu/ZnO nanocomposite particles with molar ratios of ZnO : Cu = 2 and 5 are synthesized by reduction of the metal-organic Cu precursor [Cu{(OCH(CH3)CH2N(CH3)(2))}(2)] in the presence of stearate@ZnO nanoparticles. In the case of ZnO : Cu = 5, high-angle annular dark field-scanning transmission electron microscopy (HAADF-STEM) combined with electron-energy-loss-spectroscopy (EELS) as well as attenuated total reflection Fourier transform infrared (ATR-IR) spectroscopy are used to localize the small amount of Cu deposited on the surface of 3-5 nm sized stearate@ZnO particles. For ZnO : Cu = 2, the microstructure of the nanocomposites after catalytic activity testing is characterized by HAADF-STEM techniques. This reveals the construction of large Cu nanoparticles (20-50 nm) decorated by small ZnO nanoparticles (3-5 nm). The catalytic activity of both composites for the synthesis of methanol from syn gas is evaluated.
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