Controlling the growth of particle size and size distribution of silica nanoparticles by the thin film structure

dc.contributor.authorUysal, Bengü Özuğur
dc.contributor.authorTepehan, Fatma Zehra
dc.date.accessioned2019-06-27T08:04:04Z
dc.date.available2019-06-27T08:04:04Z
dc.date.issued2012
dc.departmentFakülteler, Mühendislik ve Doğa Bilimleri Fakültesi, Biyoinformatik ve Genetik Bölümüen_US
dc.description.abstractNanostructured silicondioxide thin films were prepared by sol-gel spin coating technique. The SiO2 films were made using a conventional mixture of tetraethoxysilane (TEOS) deionized water and ethanol with various NH3/TEOS ratios. The nanostructured silica films were made using a mixture of the SiO2 sol and regular SiO2 sol to control the enlargement of the particles inside the films. The structural morphological and optical characterizations of the as-deposited and annealed films were carried out using X-ray diffraction (XRD) atomic force microscopy scanning electron microscopy NKD spectrophotometer and ultraviolet-visible (UV-vis) spectroscopy. The transmittance data of the infrared spectra of the films were recorded using an FT-IR Spectrometer. The XRD studies showed that as-deposited films were amorphous and the formation of the alfa-cristobalite phase of the silica film was investigated at annealing temperature close to 1100 A degrees C. Optical properties of the transmittance spectra in the s and p-polarization modes were collected. Refractive indices and extinction coefficients were determined with respect to the NH3/TEOS ratios in the compositions of the films. Optical cut-off wavelength values were investigated from the extrapolation of the absorbance spectra which was estimated from the UV-vis spectroscopy measurements. A red shift in the absorption threshold indicated that the size of silica nanoparticles was increased by an increase in the NH3/TEOS volume ratio from 1:64 to 1:8.en_US]
dc.identifier.citation7
dc.identifier.doi10.1007/s10971-012-2783-xen_US
dc.identifier.endpage186
dc.identifier.issn0928-0707en_US
dc.identifier.issn1573-4846en_US
dc.identifier.issn0928-0707
dc.identifier.issn1573-4846
dc.identifier.issue1
dc.identifier.scopus2-s2.0-84863328704en_US
dc.identifier.scopusqualityQ2
dc.identifier.startpage177en_US
dc.identifier.urihttps://hdl.handle.net/20.500.12469/887
dc.identifier.urihttps://doi.org/10.1007/s10971-012-2783-x
dc.identifier.volume63en_US
dc.identifier.wosWOS:000305684000023en_US
dc.identifier.wosqualityN/A
dc.institutionauthorUysal, Bengü Özuğuren_US
dc.language.isoenen_US
dc.publisherSpringeren_US
dc.relation.journalJournal of Sol-Gel Science and Technologyen_US
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanıen_US
dc.rightsinfo:eu-repo/semantics/openAccessen_US
dc.subjectMetaloxidesen_US
dc.subjectNanoparticlesen_US
dc.subjectSol-gel methoden_US
dc.subjectParticle sizeen_US
dc.titleControlling the growth of particle size and size distribution of silica nanoparticles by the thin film structureen_US
dc.typeArticleen_US
dspace.entity.typePublication

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