Fluorographite to hydroxy graphene to graphene: a simple wet chemical approach for good quality graphene

Rajeena, Uruniyengal; Akbar, Mohammed Ali; Raveendran, Poovathinthodiyil; Ramakrishnan, Resmi M.

doi:10.1039/c8nj01392f

Cited by 18 publications

(10 citation statements)

References 42 publications

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“…A simple, high-yielding, one-step strategy for the preparation of graphol consists of reacting fluorographite 78 or iodographene 79 with sodium hydroxide under solvothermal conditions. Since the hydroxyl substituents are sufficiently hydrophilic, the solvent water molecules can easily enter into the layers, resulting in the complete exfoliation of the materials.…”

Section: Oxygen Groupsmentioning

confidence: 99%

Harvesting graphene oxide – years 1859 to 2019: a review of its structure, synthesis, properties and exfoliation

2020

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Section: Oxygen Groupsmentioning

confidence: 99%

Harvesting graphene oxide – years 1859 to 2019: a review of its structure, synthesis, properties and exfoliation

2020

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“…More specifically, the bands located between 1635–1678 cm −1 corresponding to skeletal vibrations of graphitic regions suggest a reductive defluorination of FG and establishment of C sp 2 network . The bands between 1032–1100 cm −1 can be attributed to C−O stretching vibrations, while ‐OH stretching and bending vibrations appear in the 3300–3500 cm −1 and 1330–1420 cm −1 regions, respectively . These vibrational fingerprints testify the successful functionalization of FG with hydroxyl groups, resulting from the nucleophilic substitution.…”

Section: Resultsmentioning

confidence: 71%

“…In addition, the specific composition (F/OH ratio) and pattern of F and OH groups on the graphene lattice can trigger magnetic ordering, which is sustainable at room temperature . Hydroxylated graphene derivatives, in which FG acts as a precursor, have revealed their potential for the production of high quality graphene or for fluorescent applications, spintronics and magnetically separable nanocarriers …”

Section: Introductionmentioning

confidence: 99%

One‐Step Synthesis of Janus Fluorographene Derivatives

Kouloumpis

Chronopoulos

Potsi

et al. 2020

Chemistry A European J

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Fluorographene, at wo-dimensional derivativeo f graphene, is an excellent starting materialf or the synthesis of graphene derivatives. In this work, ao ne-step, substratefree method for the asymmetricf unctionalization of fluorographene layers with hydroxyl groups by af acile nucleophilic substitution reactioni sr eported. Such ac hemical modification occurs in ab iphasic aqueous-organic system under mild conditions, leading to Janus graphene nanosheets functionalized by hydroxyl groups on one side and retaining fluorine atoms on the other.T he reported experimental route paves the way for two-dimensional bifacial graphene templates, thus broadening the application potential of graphene materials.

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“…Oxalic acid assisted exfoliation of graphite reported edge functionalization with carbonyl moieties too. Aromatic C=C stretching in graphene is observed at 1587 cm -1 [19]. The band centred around 3300 cm -1 indicates O-H stretching bands of graphene, surface hydroxyl groups of ZnO and adsorbed water [16].…”

Section: Materials Characterizationmentioning

confidence: 97%

Ball-Mill Assisted Green One-Pot Synthesis of ZnO/Graphene Nanocomposite for Selective Electrochemical Sensing of aquatic pollutant 4-nitrophenol

Kavya

Narayanan

2021

Teknomekanik

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ZnO, having good transparency, high electron mobility and lower electrical noise, is an excellent material for electrochemical studies. Due to its high surface area and electrical conductivity, graphene is well suitable for the good dispersion of metal oxides for electronic/electrochemical applications. Graphene prevents particle agglomeration, whereas the addition of metal oxide prevents layer restacking in graphene. The bulk preparation of graphene via cost-effective and green methods are preferred. The aromatic conjugated π-network along the whole surface is not attained in large scale graphite oxide assisted production due to the defects and functional groups introduced during the hazardous synthetic procedure. Here, less defective graphene is synthesised via ball milling of graphite using metal oxalate as an exfoliating agent for the first time. Calcination of metal oxalate inserted graphite leads to the enormous evolution of gases thereby sliding the graphitic layers, leading to the formation of graphene sheets decorated with ZnO spherical nanoparticles’ bunches. The layer exfoliation and metal oxide incorporation are achieved here via a one-pot synthesis strategy. The use of ZnO/graphene in the selective sensing of 4-nitrophenol is investigated using cyclic voltammetric measurements in the presence of interfering compounds such as glucose, uric acid, ascorbic acid and H2O2.

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Fluorographite to hydroxy graphene to graphene: a simple wet chemical approach for good quality graphene

Abstract: Good quality graphene is prepared in a scalable manner from fluorographite by nucleophilic substitution of F with OH− ions.

Cited by 18 publications

References 42 publications

Harvesting graphene oxide – years 1859 to 2019: a review of its structure, synthesis, properties and exfoliation

Harvesting graphene oxide – years 1859 to 2019: a review of its structure, synthesis, properties and exfoliation

One‐Step Synthesis of Janus Fluorographene Derivatives

Ball-Mill Assisted Green One-Pot Synthesis of ZnO/Graphene Nanocomposite for Selective Electrochemical Sensing of aquatic pollutant 4-nitrophenol

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