For Graphene Oxide Synthesis Obtained by Modified Hummers Method: Part 3, Fourier Transform Infrared Spectroscopy Analysis

Öz

In this study, the conversion of graphene to oxide and the change of its structural properties as a result of syntheses obtained with varying sodium nitrate concentrations by Fourier Transform Infrared Spectroscopy analysis were investigated. No significant peaks related to any functional group were observed in the graphite spectrum. In the spectra after chemical oxidation, it was observed that the graphite undergoes a structural changes and new bands appear in which oxygen-containing functional groups are seen. The 1723 cm-1 and 1619 cm-1 bands, which are a must-see in the graphene oxide spectra, appeared ~1717 cm-1 and ~1615 cm-1, respectively. It was observed that the results obtained from this analysis were in good agreement with the results from the X-ray photoelectron spectroscopy analysis. In the light of all the results, it can be said that the syntheses obtained under these conditions are graphene oxide samples with different properties and are in agreement with the literature.

Anahtar Kelimeler

• Graphite
• Graphene oxide
• Hummers Method
• Nanomaterial
• Fourier Transform Infrared Spectroscopy

Modifiye Hummers Yöntemi ile Elde Edilen Grafen Oksit Sentezleri İçin: Kısım3, Fourier Dönüşümlü Kızılötesi Spektroskopisi Analizi

Öz

Bu çalışmada, Fourier Dönüşümlü Kızılötesi Spektroskopisi analizi ile değişen sodyum nitrat konsantrasyonlarıyla elde edilen sentezler sonucunda grafen okside dönüşümü ve yapısal özelliklerinin değişimi incelenmiştir. Grafit spektrumunda, herhangi bir fonksiyonel grupla ilgili anlamlı pikler gözlenmemiştir. Kimyasal oksidasyondan sonra spektrumlardan grafitin yapısal değişime uğradığı ve oksijen içeren fonksiyonel gruplara atfedilen yeni bantlar ortaya çıktığı görülmüştür. Grafen oksit spektrumlarında mutlaka görülmesi gereken 1723 cm-1 ve 1619 cm-1 bantları sırasıyla ~1717 cm-1 ve ~1615 cm-1 ortaya çıkmıştır. Bu analizden elde edilen sonuçların, X ışını fotoelektron spektroskopisi analizindeki sonuçlarla karşılaştırıldığında uyum içerisinde olduğu gözlenmiştir. Bütün sonuçlar ışığında, bu şartlarda elde edilen sentezlerin, farklı özelliklere sahip grafen oksit örnekleri oldukları ve literatür ile uyum içerisinde oldukları söylenebilir.

Anahtar Kelimeler

• Grafit
• Grafen oksit
• Hummers Yöntemi
• Nanomalzeme
• Fourier Dönüşümlü Kızılötesi Spektroskopi

Kaynakça

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