THE INFLUENCE OF THE THERMAL REDUCTION TEMPERATURE ON THE STRUCTURE AND ELECTROPHYSICAL PROPERTIES OF REDUCED GRAPHENE OXIDE FILMS

Introduction. An incomplete list of graphene properties includes high electric conductivity, thermal conductivity, strength, large surface area, high light transmittance. Graphene is a very promising material from the point of view of its application in micro- and nanoelectronics. In addition, graphene advantage is a possibility of its obtaining by various ways. It allows creating materials with desired physicochemical properties by using appropriate technological methods. Objective. The investigation of a thermal reduction temperature influence on physicochemical properties of graphene oxide (GO) films. Materials and methods. In the present work, GO films are obtained on a slide surface by its immersing and removing from a graphene oxide water dispersion (dip coating). Obtained samples are studied by methods of scanning electron microscopy, Raman spectroscopy, and elemental CHN analysis. A sheet resistance is measured by a four-point probes method. Results. A content difference of elements (C, H, N) in studied samples, and both graphene structure defectiveness and sheet resistance decrease, are found to be proportional to a reduction temperature increase. A GO films thickness decrease during a heat treatment is also observed, which is presumably associated with a functional GO groups loss while thermal reduction. Conclusion. Research results demonstrate a possibility of a carbon films with desired physicochemical properties obtaining from a reduced graphene oxide (RGO), which can be used in thin-film technologies. Presented materials can also be useful in issues related to GO and RGO obtaining and applying.

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

Carbon ◽

10.1016/j.carbon.2015.02.007 ◽

2015 ◽

Vol 86 ◽

pp. 372

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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Enhanced electrochemical activities of morphologically tuned MnFe2O4 nanoneedles and nanoparticles integrated on reduced graphene oxide for highly efficient supercapacitor electrodes

Nanoscale Advances ◽

10.1039/d1na00144b ◽

2021 ◽

Author(s):

R Rajalakshmi ◽

Remya K. P. ◽

Viswanathan Chinnuswamy ◽

Nagamony Ponpandian

Keyword(s):

Graphene Oxide ◽

Physicochemical Properties ◽

Reduced Graphene Oxide ◽

Two Dimensional ◽

2D Material ◽

Highly Efficient ◽

Reduced Graphene

The morphology of a nanoparticle strongly controls the path ofelectronic interaction, which directly correlates to the physicochemical properties and also the electrochemical comportment. Conjoining it with a two-dimensional (2D) material...

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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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