Study of electrically conductive carbon textile materials obtained by electrophoretic deposition of graphene oxide

2019 ◽  
Vol 85 (12) ◽  
pp. 33-37
Author(s):  
​V. V. Safonov ◽  
S. V. Sapozhnikov ◽  
D. A. Morozova ◽  
E. V. Zajcev
Keyword(s):  
Electrical Conductivity ◽  
Surface Roughness ◽  
Silver Nanoparticles ◽  
Graphene Oxide ◽  
Electrophoretic Deposition ◽  
Photoelectron Spectroscopy ◽  
Physical And Mechanical Properties ◽  
Electrically Conductive ◽  
Textile Materials ◽  
Conductive Materials

Electrophoretic deposition is currently one of the most relevant technological methods for production of electrically conductive materials. In the work, the method of electrophoretic deposition obtained Electrically conductive materials based on carbon fibers (CF) have been obtained for the first time by electro-phoretic deposition using graphene oxide (GO) and silver nanoparticles. The obtained materials exhibit increased electrical conductivity, surface activity, and enhanced physical and mechanical properties. The purpose of the study is development of the methods for producing electrically conductive carbon textile materials by electrophoretic deposition of graphene oxide using galvanic deposition of silver nanoparticles from an electrolyte. Electrophoretic deposition was performed in 1 cm increments and at a constant voltage of 160 V during 20, 40, and 60 sec. Infrared spectroscopy data showed that GO particles are fixed on carbon textile materials. The carbon textile materials (CF/GO/NP Ag/60) thus obtained formed a new structure with several layers of graphene oxide and silver nanoparticles. The CF deposition increases the surface roughness of the hydrocarbon and thus improving the wettability and adhesion. An analysis of the spectra obtained by X-ray photoelectron spectroscopy for CF showed significant changes in the binding energy and the energy of excited photoelectrons. Compared with the initial hydrocarbons, the obtained carbon materials exhibited an increased content of silver and oxygen, whereas carbon to oxygen ratio decreased. The developed technique allowed us to obtain carbon textile materials with high electrical conductivity being 2.5 as much the original CF. Introduction of the silver nanoparticles contributes to filling of the surface cracks in CF. An increase in the share of reduced graphene oxide can significantly increase the surface roughness, electrical conductivity, surface energy and improve the screening properties of carbon textile materials. The effectiveness of screening in the obtained materials is 24.4 % higher than that in the initial CF which expands the potentiality of their application in novel technical textile products of the future.

scholarly journals Biofilm inhibition and bactericidal activity of NiTi alloy coated with graphene oxide/silver nanoparticles via electrophoretic deposition

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Sirapat Pipattanachat ◽  
Jiaqian Qin ◽  
Dinesh Rokaya ◽  
Panida Thanyasrisung ◽  
Viritpon Srimaneepong
Keyword(s):  
Surface Roughness ◽  
Silver Nanoparticles ◽  
Graphene Oxide ◽  
Electrophoretic Deposition ◽  
Biofilm Formation ◽  
Niti Alloy ◽  
Surface Characteristics ◽  
Dependent Manner ◽  
Biofilm Inhibition ◽  
Coating Time

AbstractBiofilm formation on medical devices can induce complications. Graphene oxide/silver nanoparticles (GO/AgNPs) coated nickel-titanium (NiTi) alloy has been successfully produced. Therefore, the aim of this study was to determine the anti-bacterial and anti-biofilm effects of a GO/AgNPs coated NiTi alloy prepared by Electrophoretic deposition (EPD). GO/AgNPs were coated on NiTi alloy using various coating times. The surface characteristics of the coated NiTi alloy substrates were investigated and its anti-biofilm and anti-bacterial effect on Streptococcus mutans biofilm were determined by measuring the biofilm mass and the number of viable cells using a crystal violet assay and colony counting assay, respectively. The results showed that although the surface roughness increased in a coating time-dependent manner, there was no positive correlation between the surface roughness and the total biofilm mass. However, increased GO/AgNPs deposition produced by the increased coating time significantly reduced the number of viable bacteria in the biofilm (p < 0.05). Therefore, the GO/AgNPs on NiTi alloy have an antibacterial effect on the S. mutans biofilm. However, the increased surface roughness does not influence total biofilm mass formation (p = 0.993). Modifying the NiTi alloy surface using GO/AgNPs can be a promising coating to reduce the consequences of biofilm formation.

Facile preparation of highly electrically conductive films of silver nanoparticles finely dispersed in polyisobutylene-b-poly(oxyethylene)-b-polyisobutylene triblock copolymers and graphene oxide hybrid surfactants

RSC Advances ◽  
2015 ◽  
Vol 5 (124) ◽  
pp. 102462-102468 ◽  
Author(s):  
Chih-Wei Chiu ◽  
Gang-Bo Ou
Keyword(s):  
Electrical Conductivity ◽  
Silver Nanoparticles ◽  
Graphene Oxide ◽  
Triblock Copolymers ◽  
Film Surface ◽  
High Electrical Conductivity ◽  
Electrically Conductive ◽  
Conductive Films ◽  
Heat Treated ◽  
Facile Preparation

The melted morphologies revealed that the AgNPs possessed mobility, and melted on the film surface, giving a high electrical conductivity of 5.2 × 10−2 Ω sq−1 when heat-treated at 350 °C.

scholarly journals Electrophoretic Deposition of Graphene Oxide on Stainless Steel Substrate

Nanomaterials ◽  
2021 ◽  
Vol 11 (7) ◽  
pp. 1779
Author(s):  
Dominika Marcin Behunová ◽  
George Gallios ◽  
Vladimír Girman ◽  
Hristo Kolev ◽  
Mária Kaňuchová ◽  
...  
Keyword(s):  
Electron Microscopy ◽  
Stainless Steel ◽  
Graphene Oxide ◽  
Electrophoretic Deposition ◽  
Photoelectron Spectroscopy ◽  
Stainless Steel Substrate ◽  
Steel Substrate ◽  
Environmental Application ◽  
Transmission Electron ◽  
Pre Treatment

We demonstrated the deposition of the architecture of graphene oxide on stainless steel substrate and its potential environmental application. The synthesis and characterization of graphene oxide were described. The controlled formation of graphene oxide coatings in the form of the homogenous structure on stainless steel is demonstrated by scanning electron microscopy (SEM). The structure, morphology and properties of the material were assessed by Fourier transform infrared (FTIR) spectroscopy, X-ray photoelectron spectroscopy (XPS), Raman spectroscopy, transmission electron microscopy (TEM) and atomic force microscopy (AFM). The morphology and stability of these structures are shown to be particularly related to the pre-treatment of stainless steel substrate before the electrophoretic deposition. This approach opens up a new route to the facile fabrication of advanced electrode coatings with potential use in environmental applications.

Cellulose-Based Hydrogels with Controllable Electrical and Mechanical Properties

2018 ◽  
Vol 232 (9-11) ◽  
pp. 1707-1716 ◽  
Author(s):  
Enwei Zhang ◽  
Jing Yang ◽  
Wei Liu
Keyword(s):  
Mechanical Properties ◽  
Electrical Conductivity ◽  
Graphene Oxide ◽  
Artificial Muscle ◽  
Compressive Modulus ◽  
Electrically Conductive ◽  
Pure Cellulose ◽  
Reduced Graphene ◽  
Cellulose Hydrogel ◽  
Environmentally Friendly Method

Abstract Electrically conductive cellulose-based hydrogels are prepared by a facile and environmentally friendly method, of which the electrical and mechanical properties can be easily controlled by varying the graphene loading. With an ultralow initial addition of graphene oxide (GO, 0.2 wt% versus the mass of cellulose), the resulting cellulose/reduced graphene oxide (CG0.2) hydrogel shows a significantly enhanced compressive modulus of 332.01 kPa, 54.8% higher than that of pure cellulose hydrogel. Further increasing the addition of GO to 2 wt% (versus the mass of cellulose), the electrical conductivity of the resultant CG2.0 hydrogel is as high as 7.3×10−3 S/m, 10,000-fold higher than that of pure cellulose hydrogel, and of which the mechanical properties are also enhanced. These cellulose-based hydrogels with controllable electrical and mechanical properties have a great potential for application in drug delivery and artificial muscle.

Stable electrically conductive, highly flame-retardant foam composites generated from reduced graphene oxide and silicone resin coatings

Soft Matter ◽  
2021 ◽  
Vol 17 (1) ◽  
pp. 68-82
Author(s):  
Qian Wu ◽  
Chun Liu ◽  
Longcheng Tang ◽  
Yue Yan ◽  
Huayu Qiu ◽  
...  
Keyword(s):  
Electrical Conductivity ◽  
Graphene Oxide ◽  
Flame Retardant ◽  
Reduced Graphene Oxide ◽  
Polyurethane Foam ◽  
Flame Retardancy ◽  
Silicone Resin ◽  
Electrically Conductive ◽  
Reduced Graphene

Reduced graphene oxide and silicone resin coated polyurethane foam composites with stable electrical conductivity and high flame retardancy.

scholarly journals Electrically Conductive Nanocomposites Composed of Styrene–Acrylonitrile Copolymer and rGO via Free-Radical Polymerization

Polymers ◽  
2020 ◽  
Vol 12 (6) ◽  
pp. 1221
Author(s):  
Eun Bin Ko ◽  
Dong-Eun Lee ◽  
Keun-Byoung Yoon
Keyword(s):  
Electrical Conductivity ◽  
Graphene Oxide ◽  
Free Radical ◽  
Reduced Graphene Oxide ◽  
Radical Polymerization ◽  
Free Radical Polymerization ◽  
Electrically Conductive ◽  
Acrylonitrile Copolymer ◽  
Reduced Graphene ◽  
Styrene Acrylonitrile

The polymerizable reduced graphene oxide (mRGO) grafted styrene–acrylonitrile copolymer composites were prepared via free radical polymerization. The graphene oxide (GO) and reduced graphene oxide (rGO) was reacted with 3-(tri-methoxysilyl)propylmethacrylate (MPS) and used as monomer to graft styrene and acrylonitrile on its surface. The successful modification and reduction of GO was confirmed using Fourier transform infrared spectroscopy (FT-IR), thermogravimetric analyzer (TGA), Raman and X-ray diffraction (XRD). The mRGO was prepared using chemical and solvothermal reduction methods. The effect of the reduction method on the composite properties and nanosheet distribution in the polymer matrix was studied. The thermal stability, electrical conductivity and morphology of nanocomposites were studied. The electrical conductivity of the obtained nanocomposite was very high at 0.7 S/m. This facile free radical polymerization provides a convenient route to achieve excellent dispersion and electrically conductive polymers.

scholarly journals Electrical conductivity of cement mortar with the addition of graphene

2021 ◽  
Vol 350 ◽  
pp. 00007
Author(s):  
Tatiana Potses ◽  
Vladimir Novikov ◽  
Kirill Sergeev ◽  
Sergey Leonovich
Keyword(s):  
Electrical Conductivity ◽  
Percolation Threshold ◽  
Energy Saving ◽  
Cement Mortar ◽  
Technological Innovations ◽  
Electrically Conductive ◽  
Conductive Materials ◽  
Current Voltage ◽  
Current Voltage Characteristics ◽  
Materials Used

With the development of technological innovations in the field of construction, increasing the efficiency of energy-saving materials used, more and more attention is paid to electrically conductive materials. Electrical conductivity studies were carried out on samples of concrete with graphene addition to obtain the current–voltage characteristics of the material. In order to identify the mechanism of the effects of different concentrations of graphene on electrical conductivity, a series of samples with different concentrations of graphene was made. As a result of the research, it was found that the dependence: the resistivity of the materialthe concentration is percolation, the concentration of graphene in the amount of 8% of the mass of cement is the percolation threshold.

scholarly journals A Facile Approach of Fabricating Electrically Conductive Knitted Fabrics Using Graphene Oxide and Textile-Based Waste Material

Polymers ◽  
2021 ◽  
Vol 13 (17) ◽  
pp. 3003
Author(s):  
Md Abdullah Al Faruque ◽  
Alper Kiziltas ◽  
Deborah Mielewski ◽  
Maryam Naebe
Keyword(s):  
Electrical Conductivity ◽  
Graphene Oxide ◽  
Colour Change ◽  
Reduction Process ◽  
Composite Fibre ◽  
Knitted Fabrics ◽  
Electrically Conductive ◽  
Coated Fabrics ◽  
The Fourier Transform ◽  
Application Fields

This research investigated a feasible approach to fabricating electrically conductive knitted fabrics using previously wet-spun wool/polyacrylonitrile (PAN) composite fibre. In the production of the composite fibre, waste wool fibres and PAN were used, whereby both the control PAN (100% PAN) and wool/PAN composite fibres (25% wool) were knitted into fabrics. The knitted fabrics were coated with graphene oxide (GO) using the brushing and drying technique and then chemically reduced using hydrazine to introduce the electrical conductivity. The morphological study showed the presence of GO sheets wrinkles on the coated fabrics and their absence on reduced fabrics, which supports successful coating and a reduction of GO. This was further confirmed by the colour change properties of the fabrics. The colour strength (K/S) of the reduced control PAN and wool/PAN fabrics increased by ~410% and ~270%, and the lightness (L*) decreased ~65% and ~71%, respectively, compared to their pristine fabrics. The Fourier transform infrared spectroscopy showed the presence and absence of the GO functional groups along with the PAN and amide groups in the GO-coated and reduced fabrics. Similarly, the X-ray diffraction analysis exhibited a typical 2θ peak at 10⁰ that represents the existence of GO, which was demolished after the reduction process. Moreover, the wool/PAN/reduced GO knitted fabrics showed higher electrical conductivity (~1.67 S/cm) compared to the control PAN/reduced GO knitted fabrics (~0.35 S/cm). This study shows the potential of fabricating electrically conductive fabrics using waste wool fibres and graphene that can be used in different application fields.

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