期刊
JOURNAL OF ALLOYS AND COMPOUNDS
卷 509, 期 6, 页码 2970-2975出版社
ELSEVIER SCIENCE SA
DOI: 10.1016/j.jallcom.2010.11.175
关键词
Nanocrystals; Mesoporous silica (MS) spheres; Confined growth; Composite microspheres; Cyclic voltammograms
资金
- National Natural Science Foundation of China [20925621, 20976054]
- Ministry of Education [107045]
- Shanghai Municipal Education Commission [09ZZ58]
- Program of Shanghai Subject Chief Scientist [08XD1401500]
- Program for Changjiang Scholars and Innovative Research Team in University [IRT0825]
The confined growth of CuO, NiO, and Co3O4 nanocrystals in the mesopores of the MS spheres with the help of polyelectrolyte (PE) multilayers by calcination method has been investigated. Measurements and analyses of SEM, XRD, TEM, and TGA showed that the metal oxide (CuO, NiO, or Co3O4) nanoparticles were almost confined in the mesopores of the MS spheres and had good crystallinity. And the resulting composite microspheres with good dispersion are still mesoporous. This approach can be used to prepare composite materials involving metal oxide nanaoparticles, which have potential application in catalytic field. And the results showed that cyclic voltammograms (CV) were valuable for the investigation of catalytic performances of CuO/MS, NiO/MS, and Co3O4/MS composite microspheres. (C) 2010 Elsevier B.V. All rights reserved.
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