Investigation of bandgap alteration in graphene oxide with different reduction routes

Neeraj, S.; Arif, Mohd; Monga, Shagun; Shkir, Mohd.; Mishra, Yogendra Kumar; Singh, Arun

doi:10.1016/j.apsusc.2020.145396

Cited by 86 publications

(16 citation statements)

References 65 publications

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“…Herein the G band is broadened and blue-shifted to higher wavelength, expressing size degeneration of the in-plane sp 2 domains as a result of extensive oxidation [45]. The intensity ratio, I D / I G is close to one, which is typical for GO prepared by Hummers' method [46]. FTIR is a characterization technique, which gives information about functional groups in all types of materials including nanoscale materials.…”

Section: Spectroscopic Characterizations Of Gomentioning

confidence: 95%

Antibacterial activity of graphene oxide nanosheet against multidrug resistant superbugs isolated from infected patients

et al. 2020

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Graphene oxide (GO) is a derivative of graphene nanosheet which is the most promising material of the decade in biomedical research. In particular, it has been known as an antimicrobial nanomaterial with good biocompatibility. In this study, we have synthesized and characterize GO and checked its antimicrobial property against different Gram-negative and Gram-positive multidrug drug resistant (MDR) hospital superbugs grown in solid agar-based nutrient plates with and without human serum through the utilization of agar well diffusion method, live/dead fluorescent staining and genotoxicity analysis. No significant changes in antibacterial activity were found in these two different conditions. We also compare the bactericidal capability of GO with some commonly administered antibiotics and in all cases the degree of inhibition is found to be higher. The data presented here are novel and show that GO is an effective bactericidal agent against different superbugs and can be used as a future antibacterial agent.

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Section: Spectroscopic Characterizations Of Gomentioning

confidence: 95%

Antibacterial activity of graphene oxide nanosheet against multidrug resistant superbugs isolated from infected patients

et al. 2020

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“…The mRGOs are produced via two different methods of reduction; chemical (mRGO1) and solvothermal (mRGO2) reduction methods, which are detailed as follows [ 26 , 27 ]. The chemical reduction was carried out by adding hydrazine monohydrate (1 mL) to the mGO suspension, which was stirred at 70 °C for 24 h. The color of suspension was observed to change from brown to black, indicating that the reduction of mGO had occurred.…”

Section: Methodsmentioning

confidence: 99%

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

Lee

Yoon

2020

Polymers

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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.

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“…Therefore, the solution spinning technique is the primary technique, and among all, wet spinning is extensively used in the fabrication of pure graphene fibres and graphene-based composite fibres. After wet spinning, the graphene fibres pass through reduction processes such as physical, chemical, and thermal reduction to achieve electrical conductivity [ 8 , 9 , 68 , 69 , 70 ].…”

Section: Production Process Of Graphene-based Materialsmentioning

confidence: 99%

A Review on the Production Methods and Applications of Graphene-Based Materials

et al. 2021

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Graphene-based materials in the form of fibres, fabrics, films, and composite materials are the most widely investigated research domains because of their remarkable physicochemical and thermomechanical properties. In this era of scientific advancement, graphene has built the foundation of a new horizon of possibilities and received tremendous research focus in several application areas such as aerospace, energy, transportation, healthcare, agriculture, wastewater management, and wearable technology. Although graphene has been found to provide exceptional results in every application field, a massive proportion of research is still underway to configure required parameters to ensure the best possible outcomes from graphene-based materials. Until now, several review articles have been published to summarise the excellence of graphene and its derivatives, which focused mainly on a single application area of graphene. However, no single review is found to comprehensively study most used fabrication processes of graphene-based materials including their diversified and potential application areas. To address this genuine gap and ensure wider support for the upcoming research and investigations of this excellent material, this review aims to provide a snapshot of most used fabrication methods of graphene-based materials in the form of pure and composite fibres, graphene-based composite materials conjugated with polymers, and fibres. This study also provides a clear perspective of large-scale production feasibility and application areas of graphene-based materials in all forms.

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Investigation of bandgap alteration in graphene oxide with different reduction routes

Cited by 86 publications

References 65 publications

Antibacterial activity of graphene oxide nanosheet against multidrug resistant superbugs isolated from infected patients

Antibacterial activity of graphene oxide nanosheet against multidrug resistant superbugs isolated from infected patients

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

A Review on the Production Methods and Applications of Graphene-Based Materials

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