| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 1617662 | Journal of Alloys and Compounds | 2011 | 6 Pages |
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.
Graphical abstractFigure optionsDownload full-size imageDownload as PowerPoint slideResearch highlights▶ The dispersibility of the metal oxide (CuO, NiO, or Co3O4) nanocrystals was enhanced using MS spheres as supports. ▶ The confined growth of the metal oxide (CuO, NiO, or Co3O4) nanocrystals in the mesopores of the mesoporous silica (MS) spheres was demonstrated. ▶ Coating polyelectrolyte (PE) multilayers can prevent the overgrowth of the metal oxide (CuO, NiO, or Co3O4) nanocrystals.
