Confined growth of CuO, NiO, and Co3O4 nanocrystals in mesoporous silica (MS) spheres |
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Authors: | Jie ZongYihua Zhu Xiaoling YangChunzhong Li |
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Affiliation: | Key Laboratory for Ultrafine Materials of Ministry of Education, School of Materials Science and Engineering, East China University of Science and Technology, 130 Meilong Road, Shanghai 200237, China |
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Abstract: | 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. |
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Keywords: | Nanocrystals Mesoporous silica (MS) spheres Confined growth Composite microspheres Cyclic voltammograms |
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