Effect of carbon nanotubes/graphene nanoplates hybrid to ZnO matrix: production, electrical and optical properties of nanocomposite

Güler, Ömer; Yavuz, Çağdaş; Başgöz, Öyküm; Altın, S.; Yahia, I.S.

doi:10.1007/s10854-020-02866-1

Cited by 15 publications

(4 citation statements)

References 42 publications

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“…In the sample which contains 0.8% GNPs, the increase is clearly seen in the plot. In different studies, it is predicted that the reflection further reduced with increasing amounts of graphene reinforcements and this would be related to color darkening of the nanocomposite powders together with the graphene reinforcement [32,33]. The S 1 which exhibits different characteristics than other three samples, can be explained by the lack of energy that photons can interact with electron or atom, where the change in the straight line shape of the reflectance after wavelength of 400 nm can interact [24].…”

Section: Discussionmentioning

confidence: 99%

The effect of graphene nanoplatelets on technical properties of micro- and nano-sized TiO2 matrix: a comparative research study on electrical and optical characteristics

Güler

Ayhan

Başgöz

et al. 2020

J Mater Sci: Mater Electron

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In this study, titanium dioxide (TiO 2 )-based graphene nanoplatelets (GNPs)reinforced composite materials were produced and the electrical and optical properties of the composite materials were investigated. Graphene, which was used as a reinforcing material, was produced by using liquid-phase exfoliation method. While the TiO 2 used as matrix material was commercially available for the first group of samples, it was produced by using the sol-gel method for the second group of the samples. Different rates of graphene were added to the TiO 2 powders which were commercially available and produced by using sol-gel method. GNPs used as a reinforcing material were subjected to TEM analysis. The resulting composite materials were structurally examined in SEM and XRD. Then, the changes in electrical conductivity of these composites under the impact of temperature were measured. UV-Vis spectrometers of the samples were taken and their optical properties were determined. When temperaturebased electrical examination of the produced composite materials was performed, an increase was observed on the electrical conductivity values in both groups of samples as a result of addition of the reinforcing element. In addition, TiO 2 -containing composites produced by using sol-gel method had lower electrical conductivity comparing with commercially purchased TiO 2

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Section: Discussionmentioning

confidence: 99%

The effect of graphene nanoplatelets on technical properties of micro- and nano-sized TiO2 matrix: a comparative research study on electrical and optical characteristics

Güler

Ayhan

Başgöz

et al. 2020

J Mater Sci: Mater Electron

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“…The electrical conductivity is classified as follows: GC> CSs/AC-CNTs > AC-CNTs > AC. The evaluated values of activation energies related with the various carbon products show that CSs/AC-CNTs compound has the lowest activation energy (E a =0.183 eV) when compared with other products AC-CNTs (E a =0.195 eV) AC (E a =0.353 eV), ZnO matrix with CNTs and graphene nanoplate (GNP) mixture (E a =0.230-0.392 eV) [49], thermally cured carbon blackepoxy (CB-EP) (E a =0.253-0.707 eV) [50] and sub-superficial graphite-diamond-graphite junction (E a =0.217 eV) [51].…”

Section: 5 Electrical Conductivity Measurementmentioning

confidence: 99%

A novel hybrid carbon materials-modified electrochemical sensor used for detection of gallic acid

et al. 2022

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“…Although nearly 18 years have passed since the first report of single-layer GNPs, interest in GNPs continues to increase [9,10]. The intense interest of researchers in GNPs is due to their high thermal conductivity, high modulus of elasticity, good electrical conductivity, large surface area and 2D-atomic crystal structure [11][12][13][14][15][16][17]. As a reinforcement material, graphene has great potential to increase the strength of composites.…”

Section: Introductionmentioning

confidence: 99%

Investigation of the microstructure, hardness and electrical conductivity properties of Fe/Graphene compacts

Altuntaş

Özer

Altuntaş

et al. 2023

Materials Science and Technology

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The effects of graphene nanoplatelets added to pure Fe powders at different rates on microstructure, hardness and electrical conductivity were investigated. Prepared mixed powders were compressed at 700 MPa pressure and sintered at 1250°C. Densities of samples were measured Archimedes technique. Scanning electron microscope was used for microstructure investigations. The hardness was measured according to ASTM E384. Phase types, average crystallite size and dislocation density calculations in sintered samples were made. Electrical resistance measurements were made with the four-point probe measurement technique. Powder mixtures containing ≤5 wt-% graphene nanoplatelets were sintered into compact samples. The smallest grain size, highest dislocation density, highest hardness and electrical conductivity values were obtained in samples containing 2 wt-% of graphene nanoplatelets.

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Effect of carbon nanotubes/graphene nanoplates hybrid to ZnO matrix: production, electrical and optical properties of nanocomposite

Cited by 15 publications

References 42 publications

The effect of graphene nanoplatelets on technical properties of micro- and nano-sized TiO2 matrix: a comparative research study on electrical and optical characteristics

The effect of graphene nanoplatelets on technical properties of micro- and nano-sized TiO2 matrix: a comparative research study on electrical and optical characteristics

A novel hybrid carbon materials-modified electrochemical sensor used for detection of gallic acid

Investigation of the microstructure, hardness and electrical conductivity properties of Fe/Graphene compacts

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