Complexes of Cu(II) with polyvinyl alcohol as precursors for the preparation of CuO/SiO2 nanocomposites

Cupric oxide (CuO) nanoparticles have been prepared in amorphous SiO 2 matrix using a novel variant of sol-gel technique. The method is based on the poly-condensation of a silica source (sodium silicate) in the presence of an aqueous solution containing complex of Cu(II) with polyvinyl alcohol (CuPV...

Full description

Saved in:
Bibliographic Details
Published in:Materials research innovations 2000-06, Vol.3 (5), p.308-312
Main Authors: Eliseev, Andrey A., Lukashin, Alexey V., Vertegel, Alexey A., Heifets, Lyudvig I., Zhirov, Alexandr I., Tretyakov, Yury D.
Format: Article
Language:English
Subjects:
CuO
Metal-polymer complexes
Nanocomposite materials
Polyvinylalcohol
Silica
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:Cupric oxide (CuO) nanoparticles have been prepared in amorphous SiO 2 matrix using a novel variant of sol-gel technique. The method is based on the poly-condensation of a silica source (sodium silicate) in the presence of an aqueous solution containing complex of Cu(II) with polyvinyl alcohol (CuPVA). After gelation, polymeric complexes containing several thousands Cu atoms each are incorporated into the silica network forming a precursor, which is then annealed in oxygen to get rid of organic components. The formation of CuO nano-particles was confirmed by electron diffraction studies. The size of nanoparticles can be controlled by varying [Cu 2+ ]/[PVA] ratio in the precursor. Thus prepared CuO/SiO 2 nanocomposites are characterized by high specific surface area as measured by capillary adsorption of nitrogen, suggesting their possible use in catalysis.
ISSN:1432-8917
1433-075X
DOI:10.1007/PL00010877