Preparation and Characterization of Reduced Graphene Oxide Sheets via Water-Based Exfoliation and Reduction Methods
Vorrada Loryuenyong,Krit Totepvimarn,Passakorn Eimburanapravat,Wanchai Boonchompoo,Achanai Buasri +4 more
TLDR
In this article, the authors studied the synthesis of graphene oxide and graphene via a low-cost manufacturing method, which started with the chemical oxidation of commercial graphite powder into graphite oxide by modified Hummer's method, followed by the exfoliation of graphite oxides in distilled water using the ultrasound frequency from a laboratory ultrasonic bath.Abstract:
This research studied the synthesis of graphene oxide and graphene via a low-cost manufacturing method. The process started with the chemical oxidation of commercial graphite powder into graphite oxide by modified Hummer’s method, followed by the exfoliation of graphite oxide in distilled water using the ultrasound frequency from a laboratory ultrasonic bath. Finally, the oxygen functional groups on exfoliated graphite oxide or graphene oxide were eliminated by stirring in hot distilled water at 95°C, as a replacement for highly toxic and dangerously unstable hydrazine. The results assured that stirring in hot distilled water could give the product of graphene or reduced graphene oxide. The samples were characterized by FTIR, XRD, TGA, Raman spectroscopy, SEM, and TEM methods.read more
Citations
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Synthesis of Graphene Oxide using Modified Hummers Method: Solvent Influence
TL;DR: In this paper, the influence of different solvents on the structure and electrical properties of graphene oxide was studied by using modified hummers method in which different from conventional hummer's method.
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Thermally Conductive Graphene-Polymer Composites: Size, Percolation, and Synergy Effects
TL;DR: In this paper, the authors report a facile and scalable dispersion of commercially available graphene nanoplatelets (GnPs) in a polymer matrix, which formed composite with an ultrahigh thermal conductivity of 12.4 W/m K (vs 0.2 W/k for neat polymer).
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Synthesis of metal-organic framework hybrid nanocomposites based on GO and CNT with high adsorption capacity for dye removal
TL;DR: In this article, the performance of the hybrid nanomaterials applied as adsorbents to remove malachite green (MG) as a cationic dye from colored wastewater was investigated.
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Chemical reduction of graphene oxide using green reductants
TL;DR: In this article, the authors have studied the synthesis methods, characterization and the possible mechanism for green reduction, especially by ascorbic acid, which could possibly motivate the researcher worldwide to innovate new green methods for mass scale production of graphene based materials.
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A Simple Approach to Stepwise Synthesis of Graphene OxideNanomaterial
Paulchamy B,Arthi G,Lignesh Bd +2 more
TL;DR: In this paper, the synthesis of Graphene oxide (GO) by both Hummer's and Modified Hummer’s method and its characterization by XRD, FT-IR spectroscopy and SEM are described.
References
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Synthesis of graphene-based nanosheets via chemical reduction of exfoliated graphite oxide
Sasha Stankovich,Dmitriy A. Dikin,Richard D. Piner,Kevin A. Kohlhaas,Alfred Kleinhammes,Yuanyuan Jia,Yue Wu,SonBinh T. Nguyen,Rodney S. Ruoff +8 more
TL;DR: In this paper, a colloidal suspension of exfoliated graphene oxide sheets in water with hydrazine hydrate results in their aggregation and subsequent formation of a high surface area carbon material which consists of thin graphene-based sheets.
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Chemical methods for the production of graphenes.
Sungjin Park,Rodney S. Ruoff +1 more
TL;DR: The use of colloidal suspensions to produce new materials composed of graphene and chemically modified graphene is reviewed, which is both versatile and scalable, and is adaptable to a wide variety of applications.
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The reduction of graphene oxide
Songfeng Pei,Hui-Ming Cheng +1 more
TL;DR: In this paper, the state-of-the-art status of the reduction of GO on both techniques and mechanisms is reviewed, where the reduction process can partially restore the structure and properties of graphene.
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Raman Spectra of Graphite Oxide and Functionalized Graphene Sheets
Konstantin N. Kudin,Bulent Ozbas,Hannes C. Schniepp,Robert K. Prud'homme,Ilhan A. Aksay,Roberto Car +5 more
TL;DR: Only the alternating pattern of single-double carbon bonds within the sp2 carbon ribbons provides a satisfactory explanation for the experimentally observed blue shift of the G band of the Raman spectra relative to graphite.
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Graphene based materials: Past, present and future
TL;DR: Graphene and its derivatives are being studied in nearly every field of science and engineering as mentioned in this paper, and recent progress has shown that the graphene-based materials can have a profound impact on electronic and optoelectronic devices, chemical sensors, nanocomposites and energy storage.