Low-cost route for top-down synthesis of over- and low-oxidized graphene oxide

Trikkaliotis, Dimitrios G.; Mitropoulos, Athanasios C.; Kyzas, George Z.

doi:10.1016/j.colsurfa.2020.124928

Cited by 40 publications

(23 citation statements)

References 74 publications

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“…Typically, the interlayer spacing of GOs is larger than that of pure graphite (0.335 nm) [54] due to the functional groups extending the distance between pyrolytic layers. This has been observed in GOs in previous reports [55] , [56] . The ionisation of carboxylate groups incorporated during ball milling and the carbon-, hydrogen- and oxygen-containing functional groups inherited from biomass and bio-char tend to be negatively charged and lead to mutual repulsions thus increasing the interlayer distance.…”

Section: Resultssupporting

confidence: 85%

Synthesis of graphene oxide and graphene quantum dots from miscanthus via ultrasound-assisted mechano-chemical cracking method

Yan

Manickam

Lester

et al. 2021

Ultrasonics Sonochemistry

106

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Section: Resultssupporting

confidence: 85%

Synthesis of graphene oxide and graphene quantum dots from miscanthus via ultrasound-assisted mechano-chemical cracking method

Yan

Manickam

Lester

et al. 2021

Ultrasonics Sonochemistry

106

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“…The dominant peak of graphite is located at 2θ ≈ 26 • while that of GO at 2θ ≈ 10 • . Occasionally, depending on the synthesis route, a secondary peak at 2θ ≈ 43 • is visible [87][88][89][90][91].…”

Section: X-ray Diffraction (Xrd)mentioning

confidence: 99%

“…These atoms travel and coat the substrate, allowing a detailed visualization. The typical graphite flakes have shiny squamous structure while GO presents wrinkles due to the oxidation process [87,90,94].…”

Section: Scanning Electron Microscopy-energy Dispersive X-ray Spectroscopy (Sem-eds)mentioning

confidence: 99%

“…The characteristic peak of graphite is located at~1557 cm −1 (C=C). GO hydroxyls (O-H) appear~3400 cm −1 , the carbonyl groups (C=O) are located at~1730 cm −1 , the carboxyl groups (C-OH of O=C-OH) are presented at~1400 cm −1 , and the band at 1044 cm −1 corresponds to the alkoxy groups (C-O) [34,56,87,92].…”

Section: Fourier Transform Infrared Spectroscopy (Ftir)mentioning

confidence: 99%

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Graphene Oxide Synthesis, Properties and Characterization Techniques: A Comprehensive Review

et al. 2021

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The unique properties of graphene oxide (GO) have attracted the attention of the research community and cost-effective routes for its production are studied. The type and percentage of the oxygen groups that decorate a GO sheet are dependent on the synthesis path, and this path specifies the carbon content of the sheet. The chemical reduction of GO results in reduced graphene oxide (rGO) while the removal of the oxygen groups is also achievable with thermal processes (tpGO). This review article introduces the reader to the carbon allotropes, provides information about graphene which is the backbone of GO and focuses on GO synthesis and properties. The last part covers some characterization techniques of GO (XRD, FTIR, AFM, SEM-EDS, N2 porosimetry and UV-Vis) with a view to the fundamental principles of each technique. Some critical aspects arise for GO synthesized and characterized from our group.

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“…Comparing with the top-down approach, bottomup methodologies are accomplished with the fabrication of ultrathin 2D materials with a larger area, epitaxial growth, and chemical vapor deposition. [36,37] Recent advances have resulted in a substantial-quality increase in TMDCs layers produced through chemical vapor deposition (CVD), the other potential approaches for production of wafer-scale and premiumquality TMDCs films are metal-organic CVD and deposition of atomic layers. [19,[38][39][40][41][42] TMDCs are grown with such technique can be compared to atomic layers formed by standard exfoliation method are not only be uniform over entire substrate.…”

Section: Introductionmentioning

confidence: 99%

Advances in Liquid‐Phase and Intercalation Exfoliations of Transition Metal Dichalcogenides to Produce 2D Framework

Raza

Hassan

Ikram

et al. 2021

Adv Materials Inter

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(5 of 46)www.advmatinterfaces.de Figure 3. a) Electronic band structure of various 2D materials. Reproduced under the terms of the CC-BY 4.0 license. [95] Copyright 2016, The Authors, published by MDPI. b) Energy level diagrams of various TMDCs. Reproduced with permission. [19] Copyright 2017, Elsevier B.V. c) Archetypal coordination of TMDCs, octahedral coordination forms 1T structures, while triangular prismatic coordination establishes 2H/3R structures. Reproduced with permission. [82] Copyright 2019, Elsevier. d) Structural top view of various polytypes; in 2H, two layers per repeat, the unit shows trigonal prismatic coordination and in 1T, one layer per repeat unit formed octahedral coordination of TMDCs. Reproduced with permission. [89] Copyright 2012, Springer Nature. e) 3D illustration of typical MX 2 structure having chalcogen (yellow atom) and metal (gray atom). Reproduced with permission. [104] Copyright 2011, Springer Nature. f) Schematic demonstration of phonon active modes and their symmetries of bulks and monolayer in MX 2 structures. Reproduced under the terms of the CC-BY 3.0 license. [105]

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Low-cost route for top-down synthesis of over- and low-oxidized graphene oxide

Cited by 40 publications

References 74 publications

Synthesis of graphene oxide and graphene quantum dots from miscanthus via ultrasound-assisted mechano-chemical cracking method

Synthesis of graphene oxide and graphene quantum dots from miscanthus via ultrasound-assisted mechano-chemical cracking method

Graphene Oxide Synthesis, Properties and Characterization Techniques: A Comprehensive Review

Advances in Liquid‐Phase and Intercalation Exfoliations of Transition Metal Dichalcogenides to Produce 2D Framework

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