A facile synthesis of hydroxyl functionalized graphene oxide as an electrode material for energy storage devices

Ramesh, P.; Sambathkumar, S.; Jagatheesan, R.; Kumar, Sourav

doi:10.1016/j.matlet.2019.126639

Cited by 14 publications

(9 citation statements)

References 13 publications

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“…The underlying mechanism involves the formation of a diazonium salt or a diazo compound through the diazotization of an aromatic amine-containing material with a reactive functional group, leading to the generation of a free radical during deaeration [65]. The benzene derivative linked through sigma bond with the reactive functional group undergoes an addition reaction with a carbon double bond (C=C) to form a new single C-C bond.…”

Section: Carbon-carbon Skeleton Functionalizationmentioning

confidence: 99%

Surface Functionalization Reactions of Graphene-Based Nanostructure and Their Practical Application

Kumari,

Bhandari

2024

Nanotechnology and Nanomaterials

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Graphene (G) has captured the attention of scientists and researchers due to its remarkable electronic, structural, optical, and mechanical properties. While pristine G has been used for various desirable applications requiring high electrical conductivity, there is also a demand for altered or functionalized versions of G, such as G oxide, reduced G, and other functionalized variants, in numerous other applications. The structural alteration of G through chemical functionalization unveils a multitude of possibilities for adjusting its configuration, and various chemical and physical functionalization techniques have been explored to enhance G’s stability and adaptability. Functionalization allows the customization of graphene’s properties, such as electronic, chemical, and mechanical characteristics, to suit specific applications. This chapter highlights the functionalization of graphene-based nanostructure, encompassing both covalent and non-covalent approaches, for a wide range of applications as well as for addressing current challenges and for outlining potential future research directions concerning surface functional modification for G and graphene oxide (GO).

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Section: Carbon-carbon Skeleton Functionalizationmentioning

confidence: 99%

Surface Functionalization Reactions of Graphene-Based Nanostructure and Their Practical Application

Kumari,

Bhandari

2024

Nanotechnology and Nanomaterials

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Section: Epoxy Functionalizationmentioning

confidence: 99%

“…Ramesh et al [34] demonstrated that by utilizing the biocompatible tris buffer (TB) for epoxy functionalization of GO, the degree of oxidation was improved, leading to an enhanced capacitance range of GO. Ramesh et al [34] applied TB as the alcohol moiety to react with GO at ambient temperature based on the nucleophilic attack by amine. Consequently, amine groups of TB induced the ring opening of epoxy groups, then the hydroxyl groups of TB were successfully linked with GO to facilitate grafting of more alcohol moieties on the sheets.…”

Section: Epoxy Functionalizationmentioning

confidence: 99%

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Covalent functionalization of graphene oxide

Cao,

Quintano,

Joshi

2023

Carbon Rep.

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Over the past decade, graphene oxide (GO), an oxidized derivative of graphene, has been extensively used in various fields such as water treatment, ion sieving, gas separation, drug delivery, sensing, and energy storage due to the presence of oxygencontaining functional groups, which provide GO with intrinsic hydrophilicity, dispersibility, superpermeability, and insulating properties. Furthermore, depending on the requirements of different applications, these groups can be modified by bonding with various organic functional groups to improve these characteristics. This chemical modification approach is known as functionalization, and can be divided into covalent and non-covalent depending on the bonding between the GO and the additive. Although both covalent functionalization and non-covalent functionalization can be used with GO, covalent functionalization has greater versatility in terms of the modification mechanisms and long-term stability. In this review, we focus on the covalent functionalization of GO and discuss four effective covalent functionalization methods, which are determined by the specific oxygen-containing functional groups. We explain their respective functionalization mechanisms and finally summarize the impact of covalent functionalization on GO and explore its future potential.

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“…Where t is the crystallites size, d is the lattice spacing and the number of layers for i-GO and i-RGO has been found to be B7 and B mono-layer, respectively. 23,24 Transmission electron microscopy (TEM) and highresolution TEM (HR-TEM) analyses were performed to examine the structural morphologies of the synthesized i-GO and i-RGO. The TEM images of i-GO and i-RGO in Fig.…”

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confidence: 99%

Green approach for the synthesis of monolayer reduced graphene oxide: one-step protocol with simultaneous iodination and reduction

Ramesh

Kalicharan²,

Pitchaimani³

et al. 2023

New J. Chem.

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A facile synthesis of hydroxyl functionalized graphene oxide as an electrode material for energy storage devices

Cited by 14 publications

References 13 publications

Surface Functionalization Reactions of Graphene-Based Nanostructure and Their Practical Application

Surface Functionalization Reactions of Graphene-Based Nanostructure and Their Practical Application

Covalent functionalization of graphene oxide

Green approach for the synthesis of monolayer reduced graphene oxide: one-step protocol with simultaneous iodination and reduction

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