Journal
COLLOIDS AND SURFACES B-BIOINTERFACES
Volume 151, Issue -, Pages 249-254Publisher
ELSEVIER
DOI: 10.1016/j.colsurfb.2016.12.017
Keywords
Halloysite clay; Wet chemistry; Immobilization; Metal nanoparticles; Plasmonic; Bactericidal effect
Funding
- Department of Science and Technology (DST), New Delhi [IFA12-CH-60, SR/NM/NS-18/2014]
- Russian Science Foundation [15-12-20021]
- Government of the Russian Federation [02.A03.21.0006]
- Russian Science Foundation [15-12-20021] Funding Source: Russian Science Foundation
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Halloysite nanotubes (HNTs) with immobilized silver (Ag) nanoparticles (NPs) were prepared by methods of wet chemistry and were characterized by using the transmission electron microscopy, x-ray diffraction, optical spectroscopy and experiments with E. coil bacteria in-vitro. It was found that Ag NPs with almost perfect crystalline structure and sizes from 9 nm were mainly attached over the external surface of HNTs. The optical absorption measurement revealed a broad plasmonic resonance in the region of 400-600 nm for HNTs with Ag NPs. The later samples exhibit bactericidal effect, which is more pronounced under illumination. A role of the plasmonic excitation of Ag NPs for their bioactive properties is discussed. The obtained results show that Ag NPs-decorated HNTs are promising agents for the antibacterial treatment. (C) 2016 Elsevier B.V. All rights reserved.
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