The Synthesis of Graphene Oxide via Electrochemical Exfoliation Method

Disa, Nurhafizah; Bakar, Suriani Abu; Alfarisa, Suhufa; Mohamed, Azmi; Isa, Illyas Md; Kamari, Azlan; Hashim, Norhayati; Aziz, Azlan Abdul; Mahmood, Mohamad Rusop

doi:10.4028/www.scientific.net/amr.1109.55

Cited by 17 publications

(4 citation statements)

References 11 publications

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“…Electrochemical exfoliation was used to synthesize graphene oxide (GO) [15]. Extra oxygen functional groups in GO were chemically reduced by using hydrazine hydrate (Merck, 80% soluble in water) at a ratio of 100:1 as a reducing agent to remove them (GO: hydrazine hydrate).…”

Section: Reduced Graphene Oxide Preparation and Coating Methodsmentioning

confidence: 99%

The Effect of rGO On Optical Properties of Neodymium Nanoparticles Doped Tellurite Glass System

Noorazlan

2022

JMechE

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Nanomaterials based on graphene have outstanding properties, particularly in terms of optical performance. Using melt-quenching and low-cost spray coating procedures, we effectively generated a series of reduced graphene oxide-coated tellurite glasses doped with neodymium nanoparticles, denoted as rGO-ZBTNd (NPs) glasses. An X-ray diffraction study of glass samples validated the glass system's amorphous structure. FESEM morphological analysis was used to evaluate the appearance of rGO on the glass substrate and revealed the dispersion of rGO. UV-Vis spectroscopy was used to determine different absorption bands. The refractive index value calculated using the Dimitrov and Sakka equation was found to be more than n > 2.000 and in the range of 2.339 to 2.657 when compared to uncoated samples. On the basis of these findings, a new method involving rGO deposited on tellurite glass has been developed to improve the tellurite glass currently utilised in laser applications.

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Section: Reduced Graphene Oxide Preparation and Coating Methodsmentioning

confidence: 99%

The Effect of rGO On Optical Properties of Neodymium Nanoparticles Doped Tellurite Glass System

Noorazlan

2022

JMechE

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“…GO was initially synthesized via an electrochemical exfoliation method as similarly reported in [19,20]. A custom-made surfactant, 1,4-bis (neopentyloxy)-3-(neopentyloxycarbonyl)-1,4-dioxobutane-2-sulfonate (TC14) with concentration of 0.1 M was used to assist the GO dispersion in deionized (DI) water.…”

Section: Methodsmentioning

confidence: 99%

Magnetic properties of graphene oxide via a simple mixing with waste engine oil-based carbon nanotubes

Nurhafizah

2020

SN Appl. Sci.

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Graphene oxide (GO) was synthesized via a simple electrochemical exfoliation of graphite in a surfactant-containing aqueous solution. A novel custom-made surfactant, 1,4-bis (neopentyloxy)-3-(neopentyloxycarbonyl)-1,4-dioxobutane-2-sulfonate (TC14) was used to assist the exfoliation process. The structural and magnetic properties of prepared GO were examined using electron microscopies, micro-Raman, and Fourier transform infrared spectroscopies, and vibrating sample magnetometer (VSM). Room temperature VSM measurement showed a diamagnetic response of pristine GO under a high magnetic field. This indicated the low defect and the absence of any impurities in the synthesized GO. Simple mixing of GO and carbon nanotubes (CNTs) was also done to study their magnetic properties. CNTs were initially synthesized from waste engine oil using thermal chemical vapour deposition. It was found that the addition of magnetic CNTs has successfully induced the ferromagnetism in the GO sample. The saturation magnetization and average coercivity of GO/CNTs were observed to be 6.13 memu and 345.12 G, respectively. This study offers a low cost and simple method to induced magnetism in GO as compared to the common chemical modifications of GO.

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“…Thick aggregation and uniformity of GO were seen at a certain area of the glass surface. Inhomogeneous of the GO distribution is due to the the fast exfoliation process and the type of surfactant in electrolyte during GO synthesis [16]. A different concentration of surfactant affected the agglomeration of GO on the glass samples [12].…”

Section: Scanning Electron Microscopy (Sem) Analysismentioning

confidence: 99%

Oxide ion polarizability, optical basicity, and metallization criterion of GO-coated Nd2O3 (NPs) - TeO2 glass for linear optical fibre

Shaari¹,

Azlan²,

Azlina³

et al. 2022

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The versatility of graphene oxide (GO) as coating materials on the glass surface is a new revolution in the advanced glass era. In this work, GO liquid solution was prepared by using electrochemical exfoliation in an electrolyte solution assisted by different surfactants. Meanwhile, a glass series was prepared by using the conventional meltquenched technique. A low-cost and simple spray deposition technique was used to deposit the GO on the glass sample. The obtained glass series was denoted as GO coated TNd (NPs), meanwhile, the uncoated glass was labelled as uncoated TNd (NPs). The linear optical properties of GO coated TNd (NPs) glass series was determined using UVVis spectrophotometer and utilizing the Lorentz-Lorentz equation to determine the value of polarizability. X-ray diffraction spectra revealed the amorphous structural characteristics of the glass series. The SEM morphological image revealed the variation of GO distribution on the glass surface due to the agglomeration and inhomogeneity of GO distribution on the glass surface. The homogeneity of GO distribution on the glass surface is negligible in this work as we focus solely on the effect of GO on glass properties. According to the observations, the value of GO-coated TNd (NPs) is in the range 3.4531- 3.8549 Å and uncoated TNd (NPs) is in the range 2.709- 2.774 Å. Meanwhile, the optical basicity value ranges from 1.220 to 1.262. These results demonstrate that the polarizability of oxide ions and optical basicity values of the GO coated TNd (NPs) glass series was higher than the uncoated TNd (NPs) glass. The metallization criterion for the GO-coated TNd (NPs) glass system is in the range of 0.3 < M < 0.4. Based on these results, the obtained glasses are promising in linear optical glass fibre.

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The Synthesis of Graphene Oxide via Electrochemical Exfoliation Method

Cited by 17 publications

References 11 publications

The Effect of rGO On Optical Properties of Neodymium Nanoparticles Doped Tellurite Glass System

The Effect of rGO On Optical Properties of Neodymium Nanoparticles Doped Tellurite Glass System

Magnetic properties of graphene oxide via a simple mixing with waste engine oil-based carbon nanotubes

Oxide ion polarizability, optical basicity, and metallization criterion of GO-coated Nd2O3 (NPs) - TeO2 glass for linear optical fibre

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