Plasmonic Au nanoparticles embedded in glass: Study of TOF-SIMS, XPS and its enhanced antimicrobial activities

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dc.contributor.authorKumar, Promod
dc.contributor.authorMathpal, Mohan Chandra
dc.contributor.authorGhosh, Soumya
dc.contributor.authorInwati, Gajendra Kumar
dc.contributor.authorMaze, Jero R.
dc.contributor.authorDuvenhage, Mart-Mari
dc.contributor.authorRoos, W. D.
dc.contributor.authorSwart, H. C.
dc.date.accessioned2025-01-20T21:05:49Z
dc.date.available2025-01-20T21:05:49Z
dc.date.issued2022
dc.description.abstractThe Au nanoparticles (NPs) were formed near the surfaces of pre-synthesized sodium zinc -borate glass by an ion exchange process obtained by thermal heat treatment in an open air environment at various temperatures. The pre-heated Au doped glass samples were extensively tested by the different techniques such as optical absorption spectroscopy, Scanning Electron Microscope (SEM), X-ray photoelectron spectroscopy (XPS), Time of Flight Secondary Ion Mass Spectroscopy (TOF-SIMS), and these Au NPs were used for the antimicrobial applications. SEM confirmed the spherical shaped Au NPs with increasing thermal treatment up to 550 degrees C. The optical absorption findings showed that the as -synthesized Au NPs showed Localized Surface Plasmon Resonance behaviour, giving clear evidence of an Au NPs band formed in the glass matrix. The formation mechanism of the Au doped glass samples was studied theoretically from a thermodynamic point of view during heat treatment. XPS and TOF-SIMS were used to study the chemical state and the thermal stability of the pre-heated Au NPs doped glasses in an ultra-high vacuum. The effect of concentration changes in the line-shape and in binding energy as a function of thermal heat treatment suggests that the Au NPs formed near the glass surfaces and changes in the chemical composition as well as chemical structures of the Au doped glass samples occurred. Antimicrobial activity such as antibacterial as well as antifungal activity of pre-heated Au doped glass samples was tested against different strains by the disk diffusion method. The Au doped glass samples exhibited enhanced antibacterial as well as antifungal activities by the influence of thermal treatment at different temperatures. Thus, the Au doped glass sample could be efficiently explored as a medical tool in pharmaceutical industries, biotechnology industries and chemical laboratories based upon its antibacterial findings.
dc.fuente.origenWOS
dc.identifier.doi10.1016/j.jallcom.2022.164789
dc.identifier.eissn1873-4669
dc.identifier.issn0925-8388
dc.identifier.urihttps://doi.org/10.1016/j.jallcom.2022.164789
dc.identifier.urihttps://repositorio.uc.cl/handle/11534/93324
dc.identifier.wosidWOS:000807342300003
dc.language.isoen
dc.revistaJournal of alloys and compounds
dc.rightsacceso restringido
dc.subjectAntibacterial
dc.subjectAantifungal
dc.subjectSurface technique
dc.subjectLocalized Surface Plasmon Resonance (LSPR)
dc.subjectIon exchange technique
dc.subjectmelt quenching technique
dc.subjectXPS
dc.subjectTOF-SIMS
dc.subject.ods03 Good Health and Well-being
dc.subject.odspa03 Salud y bienestar
dc.titlePlasmonic Au nanoparticles embedded in glass: Study of TOF-SIMS, XPS and its enhanced antimicrobial activities
dc.typeartículo
dc.volumen909
sipa.indexWOS
sipa.trazabilidadWOS;2025-01-12
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