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        Characterisation of chemical composition and structural features of novel antimicrobial nanoparticles

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        nanomaterials_07_00152_v2.pdf (PDF, 6Mb)
        Author
        Ren, Guogang
        Calvo-Castro, Jesus
        Ciric, Lena
        Edirisinghe, Mohan
        Cloutman-Green, Elaine
        Illangakoon, Upulitha Eranka
        Kang, Qiang
        Mahalingam, Suntharavathanan
        Matharu, Rupy Kaur
        Wilson, Rory M
        Cheong, Yuen Ki
        Attention
        2299/18936
        Abstract
        Three antimicrobial nanoparticle types (AMNP0, AMNP1 and AMNP2) produced using the TesimaTM thermal plasma technology were investigated and their compositions determined using a combination of analytical methods. Scanning electron micrograph provided the morphology of these particles with observed sizes ranging from 10 – 50 nm. Whilst FTIR spectra confirmed the absence of polar bonds and organic impurities, strong Raman active vibrational bands at ca. 1604 and 1311 cm-1 ascribed to C-C vibrational motions were observed. Carbon signals resonated at δC126 ppm in solid state NMR spectra confirmed sp2 hybridised carbons were present in high concentration in two of the nanoparticle types (AMNP1 and AMNP2). X-ray powder diffraction suggested AMNP0 contains single phase WC in a high state of purity and multiple phases of WC/WC1-x were identified in both AMNP1 and AMNP2. Finally, XPS surface analyses revealed and quantified the elemental ratios in these composite formulations.
        Publication date
        2017-06-23
        Published in
        Nanomaterials
        Published version
        https://doi.org/10.3390/nano7070152
        Other links
        http://hdl.handle.net/2299/18936
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