Gamma-Irradiation Induced Functionalization of Graphene Oxide with Organosilanes

Gamma-ray radiation was used as a clean and easy method for turning the physicochemical properties of graphene oxide (GO) in this study. Silane functionalized-GO were synthesized by chemically grafting 3-aminopropyltriethoxysilane (APTES) and 3-glycidyloxypropyltrimethoxysilane (GPTES) onto GO surfa...

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Bibliographic Details
Published inInternational journal of molecular sciences Vol. 20; no. 8; p. 1910
Main Authors Aujara, Kabiru Musa, Chieng, Buong Woei, Ibrahim, Nor Azowa, Zainuddin, Norhazlin, Thevy Ratnam, Chantara
Format Journal Article
LanguageEnglish
Published Switzerland MDPI AG 18.04.2019
MDPI
Subjects
Carbon
Chemical sensors
Chemical vapor deposition
Electronic equipment
Epitaxial growth
Fourier transforms
functionalization
gamma-ray
Graphene
Graphite
Interfacial bonding
Mechanical properties
Methods
Morphology
Organic chemistry
Oxidation
Polymers
Scanning electron microscopy
silanes
Vapors
Vibration
functionalization
silanes
gamma-ray
graphene
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Summary:Gamma-ray radiation was used as a clean and easy method for turning the physicochemical properties of graphene oxide (GO) in this study. Silane functionalized-GO were synthesized by chemically grafting 3-aminopropyltriethoxysilane (APTES) and 3-glycidyloxypropyltrimethoxysilane (GPTES) onto GO surface using gamma-ray irradiation. This established non-contact process is used to create a reductive medium which is deemed simpler, purer and less harmful compared conventional chemical reduction. The resulting functionalized-GO were characterized by Fourier transform infrared spectroscopy (FT-IR), X-ray diffraction (XRD), field emission scanning electron microscopy (FE-SEM), thermogravimetric analysis (TGA), and Raman spectroscopy. The chemical interaction of silane with the GO surface was confirmed by FT-IR. X-ray diffraction reveals the change in the crystalline phases was due to surface functionalization. Surface defects of the GO due to the introduction of silane mioties was revealed by Raman spectroscopy. Thermogravimetric analysis of the functionalized-GO exhibits a multiple peaks in the temperature range of 200-650 °C which corresponds to the degradation of chemically grafted silane on the GO surface.
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ISSN:1422-0067
1661-6596
1422-0067
DOI:10.3390/ijms20081910