UCL Discovery
UCL home » Library Services » Electronic resources » UCL Discovery

Characterisation of the Chemical Composition and Structural Features of Novel Antimicrobial Nanoparticles

Cheong, Y-K; Calvo-Castro, J; Ciric, L; Edirisinghe, M; Cloutman-Green, E; Illangakoon, UE; Kang, Q; ... Ren, G; + view all (2017) Characterisation of the Chemical Composition and Structural Features of Novel Antimicrobial Nanoparticles. Nanomaterials , 7 (7) , Article 152. 10.3390/nano7070152. Green open access

[img]
Preview
Text
Ciric_nanomaterials-07-00152-v2.pdf - Published version

Download (6MB) | Preview

Abstract

Three antimicrobial nanoparticle types (AMNP0, AMNP1, and AMNP2) produced using the Tesima(TM) thermal plasma technology were investigated and their compositions were determined using a combination of analytical methods. Scanning electron micrographs provided the morphology of these particles with observed sizes ranging from 10 to 50 nm, whilst FTIR spectra confirmed the absence of polar bonds and organic impurities, and strong Raman active vibrational bands at ca. 1604 and 1311 cm(-1) ascribed to C-C vibrational motions were observed. Carbon signals that resonated at δC 126 ppm in the solid state NMR spectra confirmed that sp² hybridised carbons were present in high concentration in two of the nanoparticle types (AMNP1 and AMNP2). X-ray powder diffraction suggested that AMNP0 contains single phase Tungsten carbide (WC) in a high state of purity and multiple phases of WC/WC1-x were identified in both AMNP1 and AMNP2. Finally, X-ray photoelectron spectral (XPS) analyses revealed and quantified the elemental ratios in these composite formulations.

Type: Article
Title: Characterisation of the Chemical Composition and Structural Features of Novel Antimicrobial Nanoparticles
Location: Switzerland
Open access status: An open access version is available from UCL Discovery
DOI: 10.3390/nano7070152
Publisher version: http://doi.org/10.3390/nano7070152
Language: English
Additional information: Copyright © 2017 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/).
Keywords: Raman, SS-NMR, XPS, XRD, antibacterial, antimicrobial, antiviral, carbide, nanoparticles, tungsten
UCL classification: UCL > Provost and Vice Provost Offices
UCL > Provost and Vice Provost Offices > UCL BEAMS
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science > Dept of Civil, Environ and Geomatic Eng
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science > Dept of Mechanical Engineering
URI: https://discovery.ucl.ac.uk/id/eprint/1561063
Downloads since deposit
73Downloads
Download activity - last month
Download activity - last 12 months
Downloads by country - last 12 months

Archive Staff Only

View Item View Item