Progress in preparation, characterization, surface functional modification of graphene oxide: A review

Jingzhong, Liu; Chen, Shuping; Liu, Yanan; Bijing, Zhao

doi:10.1016/j.jscs.2022.101560

Cited by 51 publications

(19 citation statements)

References 145 publications

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“…In case of graphene oxides presence of different oxygen containing functional groups can be identified by the vibrational peaks obtained. The chemical changes in transition from edges to the inner region of GO flakes can be seen in the FTIR images [25,26]. The electrical and mechanical properties can be varied with the presence of functional group.…”

Section: Characterization Of Graphene Nanosheetsmentioning

confidence: 98%

“…There are different characterization methods includes Fourier Transform Infrared Spectroscopy (FTIR), Solid-state nuclear magnetic resonance (SS-NMR), X-ray Photoelectron Spectroscopy (XPS), Raman Spectroscopy, Thermo-Gravimetric Analysis (TGA), and different kind of microscopic technique including Transmission Electron Microscopy (TEM), Scanning Electron Microscopy (SEM), and Atomic Force Microscopy (AFM) [26].…”

Section: Characterization Of Graphene Nanosheetsmentioning

confidence: 99%

“…XPS provides some advantages over FTIR and SS-NMR in giving both basic information and quantification about the sample. It also shows the percentage of different oxygen containing functional group on the graphene surface Graphene Nanosheets for Fuel Cell Application DOI: http://dx.doi.org/10.5772/intechopen.1001838 [26]. Raman spectroscopy has an advantage in studying graphene with polar impurities.…”

Section: Characterization Of Graphene Nanosheetsmentioning

confidence: 99%

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Graphene Nano Sheets for the Fuel Cell Applications

Das,

Tewary

et al. 2023

Advances in Nanosheets [Working Title]

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The Chapter will be consist of following topic: 1) Introduction of Graphene Nanosheets: The important of nanosheets and their properties will be discussed for the various electrochemical activities. 2) Role of Graphene nanosheets as PEM fuel cell Electrocatalyst: Graphene as a electrocatalyst for PEM fuel cell will be discussed and compared with the recent trends. 3) Application of Graphene nanosheets on PEM Fuel Cell: The application in different components in PEM fuel cell will be discussed. 4) Role of graphene Nanosheets on ORR and HAD activity: The properties will be discussed on the effect of nanosheets. 5) PEM Fuel Cell Performance: Over all performance improvement will be discussed

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Section: Characterization Of Graphene Nanosheetsmentioning

confidence: 98%

Section: Characterization Of Graphene Nanosheetsmentioning

confidence: 99%

Section: Characterization Of Graphene Nanosheetsmentioning

confidence: 99%

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Graphene Nano Sheets for the Fuel Cell Applications

Das,

Tewary

et al. 2023

Advances in Nanosheets [Working Title]

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“…These functional groups provide reactive sites for chemical modification. [17][18][19][20] Although some studies have reported improvements in polymer properties after the addition of non-covalent functionalized GO by solution mixing, the actual results are not satisfactory. The GO sheets tend to restacked and aggregate due to the presence of van der Waals forces between the planar structures, resulting in weak interfacial interaction between the polymer matrix and the non-covalent bond functionalized GO.…”

Section: Introductionmentioning

confidence: 99%

Effects of different amine-functionalized graphene oxide on the mechanical and thermal properties of polyimide composites

Zhang,

Liu,

Liu

et al. 2023

High Performance Polymers

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The utilization of functionalized graphene oxide as nanofillers has attracted significant attention in the development of high-performance composite materials. In this study, amine-functionalized graphene oxide (AFGO) by different amines, including p-phenylenediamine- (PPD-GO) and 4, 4’-diaminodiphenyl ether (ODA-GO), respectively, was prepared and used to synthesize a series of polyimide (PI) composite membranes via in situ polymerization method. The PPD-GO/PI and ODA-GO/PI composite membranes exhibited much higher mechanical and thermal properties than that of neat PI, owing to the diverse interfacial interaction and the surface architecture behavior. Compared to neat PI, the tensile strengths were enhanced 14.6% and 14.5%, the tensile modulus were enhanced 26.9% and 23.2%, and the Tg increased by 9°C and 17.5°C of the PI composite membrane containing 0.3 wt% PPD-GO or ODA-GO, respectively. This study provides a guidance for the development of high-performance PI composite materials through the regulated interfacial structure via the moderate chain length.

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“…Topography pertains to the physical configuration or structure of a substance, while band gap denotes the disparity in energy levels existing between the most energetically occupied molecular bands within a given material [10]. Investigations on the topographical characteristics and band gap of graphene oxide can provide valuable insights into its inherent qualities and its applications in forthcoming technological advancements [11].…”

Section: Introductionmentioning

confidence: 99%

Density Functional Theory calculations for Graphene Oxide, Zinc Oxide and Graphene oxide/zinc oxide composite structure

Hattab,

Tapabashi,

Khalil

2023

Preprint

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Graphene oxide is a complex substance that possesses significant implications in both theoretical and practical domains. In order to examine the potential of graphene oxide (GO) in reducing the high band gap of conducting materials, the electronic properties, including topography and band gap, the materials were assessed utilising density functional theory (DFT). calculations. The “B3LYP” technique was employed, along with the “6-31G” (d, p) and “LanL2DZ” basis sets. The quantum chemical parameters that have been calculated and found to be connected with reduced efficiency include total energy (E), highest occupied molecular orbital energy (EHOMO), lowest unoccupied molecular orbital energy (ELUMO), energy gap (EH−L), hardness (η), softness (S), and global electrophilicity index (ω). Applying the abbreviated Fukui function and abbreviated softness indicators facilitated the evaluation of potential regions for local reactivity. The results show that the total energy E is the highest at GO/ZnO composite which mean that it the most stable compound. While the EH−L for the composite was about 1.62 and this can prove the evidence that the composite is more relabel for the photo degradation than the ZnO in visible light.

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Progress in preparation, characterization, surface functional modification of graphene oxide: A review

Cited by 51 publications

References 145 publications

Graphene Nano Sheets for the Fuel Cell Applications

Graphene Nano Sheets for the Fuel Cell Applications

Effects of different amine-functionalized graphene oxide on the mechanical and thermal properties of polyimide composites

Density Functional Theory calculations for Graphene Oxide, Zinc Oxide and Graphene oxide/zinc oxide composite structure

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