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Silver Nanoparticles Embedded Copper Oxide as Efficient Core-Shell for Catalytic Reduction of 4-nitrophenol and Antibacterial Activity improvements

Abstract

A facile and eco-friendly method was developped to prepare microporous CuO@Ag0 core-shell with high catalytic and antibacterial activities. Scanning and transmission electron microscopy revealed a preponderance of nearly spherical 50 nm particles with slight structure compaction. Comparison of the hysteresis loops confimed the structure compaction after AgNP incorporation, and a significant decrease of the specific surface area from 55.31 m2/g for CuO to 8.03 m2/g for CuO@Ag0 was noticed. Kinetic study of 4-nitrophenol (4-NP) reduction into 4-aminophenol (4-AP) by sodium borohydride revealed a first order reaction that produces total conversion in less than 18 minutes. CuO@Ag0 also exhibited appreciable antibacterial activity against Staphylococcus aureus. The antibacterial effects were found to strongly depend on the size, contact surface, morphology and chemical composition of the catalyst particles. Addition of Ag0-NPs produced more reactive oxygen species in the bacteria medium. These results open promising prospects for potential applications as low cost catalyst in wastewater treatment and antibacterial agent in cosmetics.

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Publication details

The article was accepted on 10 Jun 2018 and first published on 11 Jun 2018


Article type: Paper
DOI: 10.1039/C8DT02154F
Citation: Dalton Trans., 2018, Accepted Manuscript
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    Silver Nanoparticles Embedded Copper Oxide as Efficient Core-Shell for Catalytic Reduction of 4-nitrophenol and Antibacterial Activity improvements

    N. Bouazizi, J. Vieillard, P. Thebault, F. Desirac, T. Clamens, R. Bargougui, N. Couvrat, O. Thoumire, N. Brun, G. Ladam, S. Morin, N. Mofaddel, O. Lesouhaitier, A. Azzouz and F. Le Derf, Dalton Trans., 2018, Accepted Manuscript , DOI: 10.1039/C8DT02154F

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