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Open Access Photocatalytic and antimicrobial activities of functionalized silicate sol–gel embedded ZnO–TiO2 nanocomposite materials

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In this study, zinc oxide–titanium dioxide nanocomposite materials (ZnO–TiO2)NCM have been synthesized through a simple chemical route which are dispersed into various amine functionalized silicate sol–gel matrices (FSG) and are characterized by DRS, PL, XRD, TEM, SEM and EDAX techniques. The photocatalytic performance of the obtained Silicate/(ZnO–TiO2)NCM towards the decomposition of 4-nitrophenol (4-NP) and their antimicrobial activity for the inhibition of Escherichia coli (gram negative bacteria), Bacillus cereus (gram positive bacteria) and Trichoderma longibrachiatum (fungi) have been evaluated and the results are compared with controlled samples. In particular, the dispersion of (ZnO–TiO2)NCM into the silicate matrices has induced more beneficial effect on the photodegradation and antimicrobial activities. The Silicate/(ZnO–TiO2)NCM has exhibited maximum photodegradation and antimicrobial inhibition zone when compared to controlled samples.
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Keywords: 4-NITROPHENOL; ANTIMICROBIAL ACTIVITY; PHOTOCATALYST; SILICATE SOL–GEL; SOL–GEL FILM; ZNO–TIO2

Document Type: Research Article

Publication date: December 1, 2013

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  • Materials Express is a peer-reviewed multidisciplinary journal reporting emerging researches on materials science, engineering, technology and biology. Cutting-edge researches on the synthesis, characterization, properties, and applications of a very wide range of materials are covered for broad readership; from physical sciences to life sciences. In particular, the journal aims to report advanced materials with interesting electronic, magnetic, optical, mechanical and catalytic properties for industrial applications.
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