期刊
JOURNAL OF NANOPARTICLE RESEARCH
卷 10, 期 8, 页码 1279-1285出版社
SPRINGER
DOI: 10.1007/s11051-008-9371-6
关键词
amphiphilic molecular precursor; cerium dioxide; nanoparticle; microstructure; photoabsorption
资金
- Science Fund of Shanghai University for Excellent Youth Scientists
- National Natural Science Foundation of China [20671072]
Maleic anhydride was grafted by long-chain alcohols (1-hexadecanol, 1-octadecanol) to amphiphilic mono-L cis-butene dicarboxylates (L = hexadecyl, octadecyl), i.e., MAH, MAO, respectively. Subsequently, corresponding amphiphilic cerium complexes with these two mono-L cis-butene dicarboxylate ligands (Ce(L')(3), L'= MAH, MAO) were synthesized and behaved as the precursors to prepare CeO(2) nanoparticles for both of which can form nanosized micelle-like aggregates by special self-assembly in the wet chemical process. The nanoparticles were further characterized by Fourier transform-infrared spectroscopy (FTIR), Diffuse reflectance ultraviolet-visible spectra (DRUVS), scanning electron microscope (SEM), transmission electron microscope (TEM), and x-ray diffraction (XRD). Both the CeO(2) nanoparticles are in a cubic fluorite structure and present regular and well-dispersion club-like morphology with average particle size in the range of 40-70 nm. Besides, the strong ultraviolet-visible absorption for these CeO(2) nanoparticles can be found at the long-wavelength ultraviolet to visible region of 200-500 nm.
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