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Alkoxide structure effect on size and size distribution of Ag, Au and Ag@Au nanoparticles, prepared via alkoxide mild reduction in water

dc.contributor.authorOrtiz P.D.
dc.contributor.authorCastillo-Rodriguez J.
dc.contributor.authorDíaz-García A.M.
dc.contributor.authorMartin-Trasanco R.
dc.contributor.authorZarate X.
dc.contributor.authorBenito M.
dc.contributor.authorMolins E.
dc.contributor.authorSchott E.
dc.date.accessioned2020-09-02T22:25:19Z
dc.date.available2020-09-02T22:25:19Z
dc.date.issued2020
dc.identifier10.1016/j.mseb.2020.114573
dc.identifier.citation258, , -
dc.identifier.issn09215107
dc.identifier.urihttps://hdl.handle.net/20.500.12728/5737
dc.descriptionGold and silver nanoparticles were synthesized via mild alkoxide reduction of Ag+ and AuCl4 - in water, under alkaline conditions. Three non-toxic polyols (glycerin, β-cyclodextrin (βCD), and a polymer (of β-cyclodextrin)) were employed in each case as reducing and capping agent. TEM analysis revealed larger nanoparticles when glycerin was used, followed by β-cyclodextrin, and finally by the polymer. Different numbers of population maxima in nanoparticles size distribution from one alkoxide to another were observed and such variation was dependent on alkoxide's structure complexity. In UV–Vis spectra the typical bands for gold and silver nanoparticles were detected. ζ-potential measurements showed more electrostatically stable capping layer for glycerin and βCD. For the polymer, the stability of the layer should be a result of bulk effects. On the other hand, Ag-Au bi-metallic nanoparticles with core–shell structure were obtained using glycerin and β-cyclodextrin, whereas a mixture of gold and silver nanoparticles was the result with the polymer. The latter was corroborated via TEM images, EDX, UV–Vis, ζ-potential, and DLS measurements. A systematic study was carried out to elucidate the influence of the different alkoxide molecules on the properties of the resulting nanoparticles. © 2020 Elsevier B.V.
dc.language.isoen
dc.publisherElsevier Ltd
dc.subjectCore-shell nanoparticles
dc.subjectInfluence of stabilizing agent structure
dc.subjectMild reduction
dc.subjectPlasmonic nanoparticles
dc.subjectBinary alloys
dc.subjectCyclodextrins
dc.subjectGlycerol
dc.subjectGold alloys
dc.subjectMetal nanoparticles
dc.subjectSilver alloys
dc.subjectSilver nanoparticles
dc.subjectSize distribution
dc.subjectSynthesis (chemical)
dc.subjectZeta potential
dc.subjectAg-Au nanoparticles
dc.subjectAlkaline conditions
dc.subjectBimetallic nanoparticles
dc.subjectGold and silver nanoparticles
dc.subjectNanoparticles sizes
dc.subjectSize and size distributions
dc.subjectStructure complexity
dc.subjectZeta potential measurements
dc.subjectGold nanoparticles
dc.titleAlkoxide structure effect on size and size distribution of Ag, Au and Ag@Au nanoparticles, prepared via alkoxide mild reduction in water
dc.typeArticle


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