Structural characterization of graphene nanostructures produced via arc discharge method

Basit Öğe Kaydı
dc.authorid0000-0003-4345-9199
dc.contributor.authorBorand, Gökce
dc.contributor.authorAkçamlı, Nazlı
dc.contributor.authorUzunsoy, Deniz
dc.date.accessioned2021-03-20T20:09:10Z
dc.date.available2021-03-20T20:09:10Z
dc.date.issued2021
dc.departmentBTÜ, Mühendislik ve Doğa Bilimleri Fakültesi, Metalurji ve Malzeme Mühendisliği Bölümüen_US
dc.description.abstractFew-layered graphene (FLG) was produced via substrate-free direct current arc discharge between pure graphite electrodes in an originally designed reactor chamber. Previously, parameters influencing the synthesis condition and properties of graphene-like discharge density, precursor composition, electrode diameter/length, reactor design and type and pressure of buffer gases were optimized. In this study, it was observed that carbon structures with different properties deposited in the different regions of the DC arc reactor. The mechanism of graphene formation by the arc discharge method was investigated in terms of the collection side and distance to the arc region. Variations in the distance to arc region result in dissimilar temperature gradients in the reactor chamber, thereby the deposition mechanism of carbon clusters differs with regard to reactor zones. The products collected from the different regions of the reactor were characterized via Raman Spectroscopy and integrated intensity ratio (I-D/I-G and I-G/I-2D), full width half at maximum (FWHM), crystallite size (L-a), defect density (eta(D)) values were examined. The crystallite size (L-002) and average number of graphene layers (N) were determined by X-Ray diffraction (XRD) analyses. In addition, their morphological properties were investigated with scanning electron microscopy (SEM) and transmission electron microscope (TEM). As a result, the carbon nanostructures with high purity and few-layered morphology collected on the anode region of the reactor. While, the purity of few-layered graphene decreased as moving away from the anode region of the chamber. Therefore, it was determined that the properties of graphene were influenced greatly by the temperature distribution and its gradient around the arc plasma.en_US
dc.description.sponsorshipBursa Technical UniversityBursa Technical University [190D002]; Scientific and Technological Research Council of Turkey (TUBITAK)Turkiye Bilimsel ve Teknolojik Arastirma Kurumu (TUBITAK) [118M185, 119M011]en_US
dc.description.sponsorshipThis study was financially supported by "Bursa Technical University Scientific Research Projects" with the project number of 190D002 and "The Scientific and Technological Research Council of Turkey (TUBITAK)" with the project numbers of 118M185 and 119M011.en_US
dc.identifier.doi10.1016/j.ceramint.2020.11.158en_US
dc.identifier.endpage8052en_US
dc.identifier.issn0272-8842
dc.identifier.issn1873-3956
dc.identifier.issue6en_US
dc.identifier.scopusqualityQ1en_US
dc.identifier.startpage8044en_US
dc.identifier.urihttp://doi.org/10.1016/j.ceramint.2020.11.158
dc.identifier.urihttps://hdl.handle.net/20.500.12885/281
dc.identifier.volume47en_US
dc.identifier.wosWOS:000621510200003en_US
dc.identifier.wosqualityQ1en_US
dc.indekslendigikaynakWeb of Scienceen_US
dc.indekslendigikaynakScopusen_US
dc.institutionauthorBorand, Gökçe
dc.language.isoenen_US
dc.publisherElsevier Sci Ltden_US
dc.relation.ispartofCeramics Internationalen_US
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanıen_US
dc.rightsinfo:eu-repo/semantics/closedAccessen_US
dc.subjectCarbon nanomaterialsen_US
dc.subjectDC arc dischargeen_US
dc.subjectMicrostructureen_US
dc.subjectRaman spectroscopyen_US
dc.titleStructural characterization of graphene nanostructures produced via arc discharge methoden_US
dc.typeArticleen_US

Dosyalar

Koleksiyon

WoS İndeksli Yayınlar Koleksiyonu
Metalurji ve Malzeme Mühendisliği Bölümü Yayın Koleksiyonu
Scopus İndeksli Yayınlar Koleksiyonu