Preparation and Property of Reduced Graphene for Hummers

Graphene material has ideal lattice structure and unique electrical, optical and other properties. In the electronics, composite materials, and other fields it has a broad application prospect. In this paper, using the Hummers method, to prepare oxidized graphite and graphene , to optimize the conditions of the preparation of graphite oxide. With two kinds of reductors, glucose and hydrazine hydrate, reduction graphite oxide, and dropped silver ions in the process of reduction. Using XRD, SEM and Raman spectra to character and analyze the products. The result showed that the graphite and silver ions in the oxidation reaction process were both restored by glucose, hydrazine hydrate. This structure that silver nanoparticles are uniformly distributed in the graphene sheet layers, can effectively prevent the reunion of graphene layers, and also upset the rules of the pile of the graphene layers.

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Study of Reduced Graphene Oxide Preparation by Hummers’ Method and Related Characterization

Journal of Nanomaterials ◽

10.1155/2015/168125 ◽

2015 ◽

Vol 2015 ◽

pp. 1-5 ◽

Cited By ~ 44

Author(s):

Ning Cao ◽

Yuan Zhang

Keyword(s):

Graphene Oxide ◽

Reduced Graphene Oxide ◽

Graphite Oxide ◽

Chemical Reduction ◽

Raw Material ◽

Flake Graphite ◽

X Ray Diffraction ◽

Hummers Method ◽

Reduced Graphene ◽

Potential Applications

As a novel two-dimensional carbon material, graphene has fine potential applications in the fields of electron transfer agent and supercapacitor material for its excellent electronic and optical property. However, the challenge is to synthesize graphene in a bulk quantity. In this paper, graphite oxide was prepared from natural flake graphite by Hummers’ method through liquid oxidization, and the reduced graphene oxide was obtained by chemical reduction of graphene oxide using NH3·H2O aqueous solution and hydrazine hydrate. The raw material graphite, graphite oxide, and reduced graphene oxide were characterized by X-ray diffraction (XRD), attenuated total reflectance-infrared spectroscopy (ATR-IR), and field emission scanning electron microscope (SEM). The results indicated that the distance spacing of graphite oxide was longer than that of graphite and the crystal structure of graphite was changed. The flake graphite was oxidized to graphite oxide and lots of oxygen-containing groups were found in the graphite oxide. In the morphologies of samples, fold structure was found on both the surface and the edge of reduced graphene oxide.

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One-Step Synthesis of Aqueous Graphene Dispersion Stabilized by Sodium Dodecylbenzene Sulfonate

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.924.46 ◽

2014 ◽

Vol 924 ◽

pp. 46-51 ◽

Cited By ~ 1

Author(s):

Kun Luo ◽

Xiao Gang Li ◽

Hai Ming Wang ◽

Peng Wang ◽

Chun Wei

Keyword(s):

Raman Spectroscopy ◽

Graphene Oxide ◽

Hydrazine Hydrate ◽

Graphite Oxide ◽

Graphene Sheets ◽

Sodium Dodecylbenzene Sulfonate ◽

Dodecylbenzene Sulfonate ◽

Reduced Graphene ◽

Graphene Dispersion ◽

One Step

Graphite oxide (GO), prepared by modified Hummer’s method from graphite, was reduced by hydrazine hydrate in the presence of sodium dodecylbenzene sulfonate (SDBS), leading to a concentrated aqueous graphene dispersion which was stable for more than one month. The analyses of XRD, UV-vis and Raman spectroscopy indicate that the reduced graphene oxide (RGO) was formed after chemical reaction, where single or multiple graphene sheets were observed by TEM and AFM, indicating that the RGO is well-dispersed in water through the operation.

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THE PREPARATION AND CHARACTERIZATION OF GRAPHENE BY LIQUID OXIDATION-REDUCTION METHOD

Modern Physics Letters B ◽

10.1142/s0217984913410054 ◽

2013 ◽

Vol 27 (19) ◽

pp. 1341005

Author(s):

YUHONG ZHANG ◽

BIAO YAN ◽

WEI LU

Keyword(s):

Hydrazine Hydrate ◽

Functional Groups ◽

Graphite Oxide ◽

Smooth Surface ◽

Reduction Method ◽

Oxidation Time ◽

High Quality ◽

Hummers Method ◽

Oxidation Reduction

Graphite oxide was prepared by Hummers method, then it was obtained by ultrasound. Finally, graphene was prepared by using hydrazine hydrate as reducing agent. We can get the influences of oxidation time on the graphene structure by different reacting times. Ultrasonication can reduce the aggregation of graphene efficiently. The morphology and size of graphene were characterized by SEM, TEM, XRD and FTIR. Through this method, we can get high quality graphene which has smooth surface and fewer defects. The longer the oxidation time, the more easier it is to peel and insert functional groups.

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Synthesis and Characterization of Reduced Graphene Oxide

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.678.56 ◽

2013 ◽

Vol 678 ◽

pp. 56-60 ◽

Cited By ~ 16

Author(s):

Cherukutty Ramakrishnan Minitha ◽

Ramasamy Thangavelu Rajendrakumar

Keyword(s):

Graphene Oxide ◽

Reduced Graphene Oxide ◽

Graphite Oxide ◽

High Performance ◽

Structural Changes ◽

Epoxy Group ◽

Xrd Analysis ◽

Si Substrates ◽

Reduced Graphene ◽

Reduced Graphite Oxide

Reduced graphene oxide is an excellent candidate for various electronic devices such as high performance gas sensors. In this work Graphene oxide was prepared by oxidizing graphite to form graphite oxide. From XRD analysis the peak around 11.5o confirmed that the oxygen was intercalated into graphite. By using hydrazine hydrate, the epoxy group in graphite oxide was reduced then the solution of reduced graphite oxide (rGO) is exfoliated. Raman spectrum of rGO contains both G band (1580 cm-1), D band (1350 cm-1). The remarkable structural changes reveals that reduction of graphene oxide from the values of ID/IG ratio that increase from 0.727 (GO) to 1.414 (rGO). The exfoliated reduced graphite oxide solution is spin coated on to the SiO2/Si substrates.

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Sulfur–hydrazine hydrate-based chemical synthesis of sulfur@graphene composite for lithium–sulfur batteries

Inorganic Chemistry Frontiers ◽

10.1039/c7qi00726d ◽

2018 ◽

Vol 5 (4) ◽

pp. 785-792 ◽

Cited By ~ 5

Author(s):

Jianmei Han ◽

Baojuan Xi ◽

Zhenyu Feng ◽

Xiaojian Ma ◽

Junhao Zhang ◽

...

Keyword(s):

Graphene Oxide ◽

Chemical Synthesis ◽

Hydrazine Hydrate ◽

Rate Capability ◽

Graphene Composite ◽

Reduced Graphene ◽

Lithium Sulfur Batteries ◽

Good Rate Capability ◽

Lithium Sulfur ◽

Excellent Stability

A sulfur–hydrazine hydrate chemistry-based method is reported here to integrate the sulfur and N-doped reduced graphene oxide to obtain S@N-rGO composite with 76% sulfur. The as-obtained S@N-rGO composite displays a good rate capability and excellent stability.

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Facile synthesis of silver-decorated reduced graphene oxide as a hybrid filler material for electrically conductive polymer composites

RSC Advances ◽

10.1039/c5ra00257e ◽

2015 ◽

Vol 5 (20) ◽

pp. 15070-15076 ◽

Cited By ~ 28

Author(s):

Linxiang He ◽

Sie Chin Tjong

Keyword(s):

Graphene Oxide ◽

Polymer Composites ◽

Reduced Graphene Oxide ◽

Graphite Oxide ◽

Conductive Polymer ◽

Facile Synthesis ◽

Hybrid Filler ◽

Electrically Conductive ◽

Conductive Polymer Composites ◽

Reduced Graphene

Nano silver-decorated reduced graphene oxide (Ag–RGO) sheets were synthesized by simply dissolving graphite oxide and silver nitrate inN,N-dimethylformamide and keeping the suspension at 90 °C for 12 h.

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Effect of carbonaceous support between graphite oxide and reduced graphene oxide with anchored Co3O4 microspheres as electrode-active materials in a solid-state electrochemical capacitor

Journal of Solid State Electrochemistry ◽

10.1007/s10008-016-3439-5 ◽

2016 ◽

Vol 21 (4) ◽

pp. 975-985 ◽

Cited By ~ 7

Author(s):

V. Parra-Elizondo ◽

B. Escobar-Morales ◽

E. Morales ◽

D. Pacheco-Catalán

Keyword(s):

Graphene Oxide ◽

Solid State ◽

Reduced Graphene Oxide ◽

Graphite Oxide ◽

Electrochemical Capacitor ◽

Active Materials ◽

Reduced Graphene ◽

Co3o4 Microspheres

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NANOFIBER PRODUCTION FROM LIQUEFIED HAZELNUT SHELL WITH THE ADDITION OF REDUCED GRAPHENE OXIDE AND POLYVINYL PYRROLIDONE

Cellulose Chemistry and Technology ◽

10.35812/cellulosechemtechnol.2020.54.92 ◽

2020 ◽

Vol 54 (9-10) ◽

pp. 953-965

Author(s):

ÖMER ÖNAL ◽

MUSTAFA YAZICI ◽

ISMAIL TIYEK ◽

KONUS OGUZHAN ◽

MEHMET HAKKI ALMA ◽

...

Keyword(s):

Graphene Oxide ◽

Reduced Graphene Oxide ◽

Lignocellulosic Biomass ◽

Polyvinyl Pyrrolidone ◽

Hummers Method ◽

Reduced Graphene ◽

Electrospinning Method ◽

Hazelnut Shell ◽

Hazelnut Shells

In this study, in order to produce nanofibers from waste hazelnut shells, a lignocellulosic biomass, firstly, liquefied hazelnut shell (LHS) was obtained by liquefaction of waste hazelnut shells using phenol and some chemicals. Then, reduced graphene oxide (RGO) was produced by Hummers’ method. RGO and polyvinyl pyrrolidone (PVP) were added to LHS, in certain proportions, to form seven different LHS-RGO-PVP solutions with ethanol/dimethylformamide (EtOH/DMF). From these solutions, nanofiber surfaces were obtained by a semi-industrial electrospinning device. The morphology of the nanofibers and the properties of the electrospinning solution were investigated, and it was observed that the optimum nanofibers were obtained from 7.5% LHS/10% PVP/5.6% RGO solution by the electrospinning method. It has been determined that the conductivity is slightly reduced by the addition of RGO to the solution, the viscosity is greatly reduced, the nanofiber diameters are reduced by approximately half, and thinner nanofibers are obtained

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