Synthesis and Applications of Graphene Oxide

Jiříčková, Adéla; Jankovský, Ondřej; Sofer, Zdeněk; Sedmidubský, David

doi:10.3390/ma15030920

Cited by 186 publications

(105 citation statements)

References 183 publications

(192 reference statements)

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“…Firstly, GO and HA were obtained to produce PLA/HA/GO scaffold. Graphene oxide synthesis was carried out by the modified Hummers method [41] . Hydroxyapatite synthesis was carried out by wet precipitation [42] .…”

Section: Discussionmentioning

confidence: 99%

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Production and Characterization of PLA/HA/GO Nanocomposite Scaffold

et al. 2022

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Polylactic acid (PLA) composite nanofibers combined with hydroxyapatite (HA) and graphene oxide (GO) nanoparticles were produced by electrospinning to create excellent biodegradable and durable scaffolds to be used in tissue engineering. The properties of the pure PLA, PLA/HA, PLA/GO, and PLA/ HA/GO nanocomposite scaffolds were analyzed in chemical, morphological, mechanical, and biocompatibility. Morphology and composition were investigated by scanning electron microscopy (SEM) and Fourier transform infrared spectroscopy (FTIR), respectively. To predict the cytocompatibility of these scaffolds, HFF-1 cells were cultured and the respective cell adhesion and proliferation were investigated by fluorescence microscopy, SEM, and MTT assay. FTIR results showed the successful synthesis of HA and GO nanoparticles. SEM images showed that the PLA/HA/GO scaffold is ideal for cell attachment and proliferation in tissue regeneration. Mechanical test results showed that the tensile strength and elastic modulus of PLA nanofibers could be increased by adding 0,8 wt % HA and 0,4 wt % GO. The PLA/HA/GO scaffold exhibited the highest tensile strength of other scaffolds. MTT assay revealed that the PLA/HA/GO scaffold showed significantly high biocompatibility with 105 % cell viability. Therefore, PLA/HA/GO scaffold with 0,8 wt %HA and 0,4 wt %GO possessing high tensile strength as well as good cell proliferation is an excellent and versatile biomaterial for tissue engineering applications.

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Section: Discussionmentioning

confidence: 99%

“…Graphene oxide synthesis was carried out by the modified Hummers method. [41] Hydroxyapatite synthesis was carried out by wet precipitation. [42] 0.4 g of HA powders and 0.2 g of GO powders were dispersed by ultrasonication in 5 mL of DMF/DCM.…”

Section: Preparing Of Solutionsmentioning

confidence: 99%

Production and Characterization of PLA/HA/GO Nanocomposite Scaffold

et al. 2022

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“…Since its discovery, graphene has seen an overwhelming response from scientists working in diverse research areas such as engineering, energy storage/management, medicine, electronics, material science, and many other disciplines. Graphene, graphene oxide, reduced graphene oxides, and its composites have been widely adopted as active materials in a wide range of applications including electrochemical energy-storage devices (EESDs) such as supercapacitors and electrochemical batteries [ 116 , 117 , 118 ]. Thanks to their superior characteristics such as excellent thermal, electrical, mechanical, and optical properties, graphene-based materials have also been widely used in electronic applications.…”

Section: Applications Of Graphenementioning

confidence: 99%

Graphene Synthesis Techniques and Environmental Applications

Abbas

Shinde²,

Abdelkareem³

et al. 2022

Materials

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Graphene is fundamentally a two-dimensional material with extraordinary optical, thermal, mechanical, and electrical characteristics. It has a versatile surface chemistry and large surface area. It is a carbon nanomaterial, which comprises sp2 hybridized carbon atoms placed in a hexagonal lattice with one-atom thickness, giving it a two-dimensional structure. A large number of synthesis techniques including epitaxial growth, liquid phase exfoliation, electrochemical exfoliation, mechanical exfoliation, and chemical vapor deposition are used for the synthesis of graphene. Graphene prepared using different techniques can have a number of benefits and deficiencies depending on its application. This study provides a summary of graphene preparation techniques and critically assesses the use of graphene, its derivates, and composites in environmental applications. These applications include the use of graphene as membrane material for the detoxication and purification of water, active material for gas sensing, heavy metal ions detection, and CO2 conversion. Furthermore, a trend analysis of both synthesis techniques and environmental applications of graphene has been performed by extracting and analyzing Scopus data from the past ten years. Finally, conclusions and outlook are provided to address the residual challenges related to the synthesis of the material and its use for environmental applications.

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“…Another route is the thermal reduction of GO which was applicable in a simple way by applying heat (thermal annealing reduction) (Xiang et al 2022). However, it is not preferable for the mass production of graphene compared to other reduction routes which can be conducted at room temperature or slightly elevated temperature (Jiříčková et al 2022).…”

Section: Introductionmentioning

confidence: 99%

Biogenic synthesis of reduced graphene oxide from Ziziphus spina-christi (Christ’s thorn jujube) extracts for catalytic, antimicrobial, and antioxidant potentialities

Mahmoud

El-Maghrabi

Hosny

et al. 2022

Environ Sci Pollut Res

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In the current work, various concentrations of the aqueous extract of Ziziphus spina-christi were employed for the phytoreduction of graphene oxide (GO). The green synthesized reduced graphene oxide (rGO) was characterized through UV-Vis spectrometry, Fourier transform infrared spectroscopy (FT-IR), scanning electron microscopy, and energy-dispersive X-ray spectroscopy (SEM-EDX). Gas chromatography-mass spectrometry (GC-MS) denoted the presence of numerous phytoconstituents including ketones, terpenoids, fatty acids, esters, and flavonoids, which acted as reducing and capping agents. The obtained results indicated the increase in rGO yield and shape with increasing the extract concentration. The optimized rGO was instantaneously ~100% removed methylene blue (MB) from the water at 5 mg L−1. However, the removal efficiency was slightly declined to reach 73.55 and 65.1% at 10 and 15 mg L−1, respectively. A powerful antibacterial activity for rGO particularly against gram-negative bacteria with a high concentration of 2 × 108 CFU mL−1 was confirmed. Furthermore, rGO demonstrated promising and comparable antioxidant efficiency with vitamin C against DPPH free radical scavenging. While vitamin C recorded 13.45 and 48.4%, the optimized rGO attained 13.30 and 45.20% at 12 and 50 μg mL−1, respectively.

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Synthesis and Applications of Graphene Oxide

Cited by 186 publications

References 183 publications

Production and Characterization of PLA/HA/GO Nanocomposite Scaffold

Production and Characterization of PLA/HA/GO Nanocomposite Scaffold

Graphene Synthesis Techniques and Environmental Applications

Biogenic synthesis of reduced graphene oxide from Ziziphus spina-christi (Christ’s thorn jujube) extracts for catalytic, antimicrobial, and antioxidant potentialities

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