A New Approach to Synthesis of Highly Dispersed Gold Nanoparticles via Glucose Oxidase-Immobilized Hydrogel and Usage in The Reduction of 4-Nitrophenol

Basit Öğe Kaydı
dc.authoridOzay, Hava/0000-0002-4184-7801
dc.contributor.authorOzay, Hava
dc.contributor.authorTarimeri, Nur
dc.contributor.authorGungor, Zeynep
dc.contributor.authorDemirbakan, Burcak
dc.contributor.authorOzcan, Burcu
dc.contributor.authorSezgintürk, Mustafa Kemal
dc.contributor.authorÖzay, Özgür
dc.date.accessioned2025-01-27T20:54:26Z
dc.date.available2025-01-27T20:54:26Z
dc.date.issued2020
dc.departmentÇanakkale Onsekiz Mart Üniversitesi
dc.description.abstractIn this study, for the first time in the literature, synthesis of Au(0) nanoparticles supported by a crosslinked gel structure was performed via enzyme-mediated reduction of Au(III) ions without using any chemical reductant. In our newly-developed method, glucose oxidase enzymes immobilized in the crosslinked gelatine structure ensured simultaneous reduction of the Au(III) ions diffused within the gel to Au(0). The Au@Gel obtained was structurally characterised with TEM (Transmission electron microscopy), EDX (Energy dispersive X-ray analysis) elemental mapping, XPS (X-Ray photoelectron spectroscopy) and XRD (X-Ray Diffraction) analyses. The catalytic activity of Au(0) particles with nearly 8 nm size in the Au@Gel was investigated for the reduction of 4-nitrophenol (4-NP) as a model compound in the presence of NaBH(4)as reducing agent. The activation parameters for the reduction reaction of 4-nitrophenol in the presence of Au@Gel catalyst were determined as E-a= 30.16 kJmol(-), Delta H= 27.52 kJmol(-)and Delta S= -197.45 Jmol(-)K(-). The Au@Gel catalyst system, with good catalytic activity, simultaneously has nearly perfect reusability.
dc.description.sponsorshipCanakkale Onsekiz Mart University Scientific Research Coordination Unit [FBA-2018-2508]
dc.description.sponsorshipThe authors thank Canakkale Onsekiz Mart University Scientific Research Coordination Unit (Project number: FBA-2018-2508) for financial support.
dc.identifier.doi10.1002/slct.202002327
dc.identifier.endpage9152
dc.identifier.issn2365-6549
dc.identifier.issue29
dc.identifier.scopus2-s2.0-85089185254
dc.identifier.scopusqualityQ3
dc.identifier.startpage9143
dc.identifier.urihttps://doi.org/10.1002/slct.202002327
dc.identifier.urihttps://hdl.handle.net/20.500.12428/26075
dc.identifier.volume5
dc.identifier.wosWOS:000557666500029
dc.identifier.wosqualityQ3
dc.indekslendigikaynakWeb of Science
dc.indekslendigikaynakScopus
dc.language.isoen
dc.publisherWiley-V C H Verlag Gmbh
dc.relation.ispartofChemistryselect
dc.relation.publicationcategoryinfo:eu-repo/semantics/openAccess
dc.rightsinfo:eu-repo/semantics/closedAccess
dc.snmzKA_WoS_20250125
dc.subjectCatalytic reduction
dc.subjectEnzyme
dc.subjectGlucose Oxidase
dc.subjectGold
dc.subjectHydrogel
dc.subject4-Nitrophenol
dc.titleA New Approach to Synthesis of Highly Dispersed Gold Nanoparticles via Glucose Oxidase-Immobilized Hydrogel and Usage in The Reduction of 4-Nitrophenol
dc.typeArticle

Dosyalar

Koleksiyon

WoS İndeksli Yayınlar Koleksiyonu
Scopus İndeksli Yayınlar Koleksiyonu