Reducing emission of carcinogenic by-products in the production of thermally reduced graphene oxide

Graphene oxide thermal reduction is accompanied by formation of broad spectra of hydrocarbons including benzene and toluene. Optimization of exfoliation procedure can significantly reduce its amount.

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Thermal reduction to control the spacing in graphene oxide membranes: effect on ion diffusion and electrical conduction

RSC Advances ◽

10.1039/c6ra16400e ◽

2016 ◽

Vol 6 (74) ◽

pp. 70012-70017 ◽

Cited By ~ 13

Author(s):

A. Alhadhrami ◽

S. Salgado ◽

V. Maheshwari

Keyword(s):

Graphene Oxide ◽

Reduced Graphene Oxide ◽

Electrical Conduction ◽

Thermal Reduction ◽

Electrochemical Characteristics ◽

Ion Diffusion ◽

Layer Spacing ◽

Reduced Graphene ◽

Oxide Membranes ◽

Graphene Oxide Membranes

Inter-layer spacing in reduced graphene-oxide membranes which modulates their ion-diffusion electrical and electrochemical characteristics is controlled by temperature of thermal reduction.

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Reduced Graphene Oxide Paper: Fabrication by a Green Thermal Reduction Method and Preliminary Study of its In Vitro Cytotoxicity

Journal of Nano Research ◽

10.4028/www.scientific.net/jnanor.45.199 ◽

2017 ◽

Vol 45 ◽

pp. 199-207 ◽

Cited By ~ 2

Author(s):

Xin Wang ◽

Peng Li ◽

Claudia Luedecke ◽

Qiang Zhang ◽

Zan Wang ◽

...

Keyword(s):

Tissue Engineering ◽

Graphene Oxide ◽

Reduced Graphene Oxide ◽

Mammalian Cells ◽

Reduction Method ◽

Heating Temperature ◽

Synthesis Method ◽

Thermal Reduction ◽

Graphene Films ◽

Reduced Graphene

Graphene films have been intensively explored because of their unique mechanical and physicochemical properties for potential applications in field of tissue engineering and implants. However, for biomedical applications, it is necessary to fully understand the toxicity and biocompatibility of the prepared graphene films since different synthesis method might lead to different biological properties. Here we report a step-by-step thermal reduction method of preparing reduced graphene oxide (rGO) film directly on various substrates at low heating temperature (below about 200 °C) without requiring any chemical reduction agent like hydrazine or other reductants (therefore we call it green method). Slowly heating GO hydrosol that was coated on the surface of a glass cell-culture dish or inside of a polypropylene tube from room temperature to 60, 100, and 160 °C for 12 h, respectively, a shiny and flat surface without crumpled structure or tiny pores was formed. We peeled it off from the substrate to explore its cytotoxicity. The results exhibited that the rGO film was biocompatible with Cal-72 cell but against Escherichia coli bacteria. Our work confirmed that rGO film produced by the green reduction method is cytocompatible with mammalian cells, which makes this rGO film a promising material for tissue engineering scaffold or as a surface-modification coating of an implant.

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Synthesis and characterization of sulfophenyl-functionalized reduced graphene oxide sheets

RSC Advances ◽

10.1039/c6ra28311j ◽

2017 ◽

Vol 7 (44) ◽

pp. 27224-27234 ◽

Cited By ~ 118

Author(s):

Benjamin Diby Ossonon ◽

Daniel Bélanger

Keyword(s):

Graphene Oxide ◽

Reduced Graphene Oxide ◽

Thermal Reduction ◽

Synthesis And Characterization ◽

Reduced Graphene ◽

Graphene Oxide Sheets

We report modification of graphene oxide by thermal reduction to obtain reduced graphene oxide and subsequent functionalization with sulfophenyl groups to obtain SRGO as well as the characterization of these materials by TGA-MS.

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Facile synthesis of thermally reduced graphene oxide-sepiolite nanohybrid via intercalation and thermal reduction method

Applied Clay Science ◽

10.1016/j.clay.2016.09.006 ◽

2017 ◽

Vol 135 ◽

pp. 510-515 ◽

Cited By ~ 9

Author(s):

M.R. Vengatesan ◽

S. Singh ◽

S. Stephen ◽

K. Prasanna ◽

C.W. Lee ◽

...

Keyword(s):

Graphene Oxide ◽

Reduced Graphene Oxide ◽

Reduction Method ◽

Thermal Reduction ◽

Facile Synthesis ◽

Reduced Graphene

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The effect of the thermal reduction temperature on the structure and sorption capacity of reduced graphene oxide materials

Applied Surface Science ◽

10.1016/j.apsusc.2015.11.167 ◽

2016 ◽

Vol 361 ◽

pp. 213-220 ◽

Cited By ~ 45

Author(s):

Alexandr V. Dolbin ◽

Maria V. Khlistyuck ◽

Valentin B. Esel'son ◽

Viktor G. Gavrilko ◽

Nikolay A. Vinnikov ◽

...

Keyword(s):

Graphene Oxide ◽

Reduced Graphene Oxide ◽

Sorption Capacity ◽

Thermal Reduction ◽

Oxide Materials ◽

Reduction Temperature ◽

Reduced Graphene

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Effect of thermal reduction temperature on the electrochemical performance of reduced graphene oxide/MnO2 composites

New Carbon Materials ◽

10.1016/s1872-5805(15)60175-5 ◽

2015 ◽

Vol 30 (1) ◽

pp. 48-53 ◽

Cited By ~ 6

Author(s):

Ling-yun Wang ◽

Yong Wang ◽

Hai-xia Zhang ◽

Xiao-min Wang

Keyword(s):

Graphene Oxide ◽

Electrochemical Performance ◽

Reduced Graphene Oxide ◽

Thermal Reduction ◽

Reduction Temperature ◽

Reduced Graphene

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Electrical Measurements of Thermally Reduced Graphene Oxide Powders under Pressure

Nanomaterials ◽

10.3390/nano9101387 ◽

2019 ◽

Vol 9 (10) ◽

pp. 1387 ◽

Cited By ~ 4

Author(s):

Hyunsoo Park ◽

Soomook Lim ◽

Dang Du Nguyen ◽

Ji Won Suk

Keyword(s):

Electrical Conductivity ◽

Graphene Oxide ◽

Reduced Graphene Oxide ◽

High Performance ◽

Applied Pressure ◽

Thermal Reduction ◽

Electrical Measurements ◽

Oxide Powders ◽

Bulk Electrical Conductivity ◽

Reduced Graphene

Graphene powders obtained via the reduction of graphene oxide flakes have been widely used in various applications as they can be synthesized in large quantities with outstanding properties. The electrical conductivity of graphene powders is critical for their uses in fabricating high-performance devices or materials. Here, we investigated the bulk electrical conductivity of reduced graphene oxide (rGO) powders depending on the applied pressure and additional thermal annealing. The electrical conductivity of the rGO powders was correlated with the change in the carbon-to-oxygen ratio via additional thermal reduction. Furthermore, the effect of the morphology of the rGO powders was studied through electromechanical measurements. This study provides a reliable method for the electromechanical characterization of rGO powders and a better understanding of the electrical conductivity of graphene-based materials.

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Reduced Graphene Oxide and Polyaniline Nanofibers Nanocomposite for the Development of an Amperometric Glucose Biosensor

Sensors ◽

10.3390/s21030948 ◽

2021 ◽

Vol 21 (3) ◽

pp. 948

Author(s):

Anton Popov ◽

Ruta Aukstakojyte ◽

Justina Gaidukevic ◽

Viktorija Lisyte ◽

Asta Kausaite-Minkstimiene ◽

...

Keyword(s):

Graphene Oxide ◽

Reduced Graphene Oxide ◽

Limit Of Detection ◽

Thermal Reduction ◽

Glucose Biosensor ◽

Practical Application ◽

X Ray Diffraction ◽

Glucose Determination ◽

Reduced Graphene ◽

Graphite Rod

The control of glucose concentration is a crucial factor in clinical diagnosis and the food industry. Electrochemical biosensors based on reduced graphene oxide (rGO) and conducting polymers have a high potential for practical application. A novel thermal reduction protocol of graphene oxide (GO) in the presence of malonic acid was applied for the synthesis of rGO. The rGO was characterized by scanning electron microscopy, X-ray diffraction analysis, Fourier-transform infrared spectroscopy, and Raman spectroscopy. rGO in combination with polyaniline (PANI), Nafion, and glucose oxidase (GOx) was used to develop an amperometric glucose biosensor. A graphite rod (GR) electrode premodified with a dispersion of PANI nanostructures and rGO, Nafion, and GOx was proposed as the working electrode of the biosensor. The optimal ratio of PANI and rGO in the dispersion used as a matrix for GOx immobilization was equal to 1:10. The developed glucose biosensor was characterized by a wide linear range (from 0.5 to 50 mM), low limit of detection (0.089 mM), good selectivity, reproducibility, and stability. Therefore, the developed biosensor is suitable for glucose determination in human serum. The PANI nanostructure and rGO dispersion is a promising material for the construction of electrochemical glucose biosensors.

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Reduced Graphene Oxide/TiO2 Nanocomposite: From Synthesis to Characterization for Efficient Visible Light Photocatalytic Applications

Catalysts ◽

10.3390/catal8120598 ◽

2018 ◽

Vol 8 (12) ◽

pp. 598 ◽

Cited By ~ 19

Author(s):

Elena Rommozzi ◽

Marco Zannotti ◽

Rita Giovannetti ◽

Chiara D’Amato ◽

Stefano Ferraro ◽

...

Keyword(s):

Graphene Oxide ◽

Visible Light ◽

Reduced Graphene Oxide ◽

Photoelectron Spectroscopy ◽

Thermal Reduction ◽

Alizarin Red S ◽

Alizarin Red ◽

Force Microscopy ◽

Reduced Graphene ◽

Visible Light Photocatalytic

In this study, a green and facile thermal reduction of graphene oxide using an eco-friendly system of d-(+)-glucose and NH4OH for the preparation of reduced graphene oxide was described. The obtained reduced graphene oxide dispersion was characterized by SEM, Dynamic Light Scattering, Raman and X-Ray Photoelectron Spectroscopy. TiO2 nanoparticles and reduced graphene oxide nanocomposites were successively prepared and used in the preparation of heterogeneous photocatalysts that were characterized by Atomic Force Microscopy and Photoluminescence Spectroscopy and subsequently tested as visible light photocatalysts for the photodegradation of Alizarin Red S in water as target pollutant. Obtained results of photocatalytic tests regarding the visible light photocatalytic degradation of Alizarin Red S demonstrated that the use of reduced graphene oxide in combination with TiO2 led to a significant improvement for both adsorption of Alizarin Red S on the catalyst surface and photodegradation efficiencies when compared to those obtained with not doped TiO2.

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