Latest Fabrication Approaches for Surface Modified Carbon Materials: Carbon Nanotubes and Graphene

Habib, Hameem; Alam, Mashqoor; Aggarwal, Monika; Wani, I. S.; Husain, Samina

doi:10.1021/bk-2022-1424.ch002

Cited by 4 publications

(5 citation statements)

References 112 publications

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“…CNTs, exemplifying sp 2 carbon structures composed of graphene sheets arranged as molecular cylinders, exist predominantly in three forms: single-walled carbon nanotubes (SWCNT), double-walled carbon nanotubes (DWCNT), and multi-walled carbon nanotubes (MWCNTs). 67 These nanostructures exhibit notable attributes such as high chemical and thermal stability, low capacitance, enhanced peak currents, and reduced overpotentials, all of which enhance sensor sensitivity. 68,69 Yun Oh et al 70 developed a skin-attachable, stretchable electrochemical sensor employing CNTs for the detection of glucose and pH in sweat using a simple, cost-effective layer-by-layer (LbL) method.…”

Section: Carbon-based Electrochemical Sensorsmentioning

confidence: 99%

Advances in electrochemical sensors for real-time glucose monitoring

Harun-Or-Rashid,

Aktar,

Preda

et al. 2024

Sens. Diagn.

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Section: Carbon-based Electrochemical Sensorsmentioning

confidence: 99%

Advances in electrochemical sensors for real-time glucose monitoring

Harun-Or-Rashid,

Aktar,

Preda

et al. 2024

Sens. Diagn.

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“…The modulation of the refractive index is employed to determine energy against wavelengths. The refractive index of Be/B-doped graphene were determined using equation ( 6) and (7).…”

Section: Computational Detailsmentioning

confidence: 99%

“…The ultrahigh electron mobilities and unique optical properties make it an exciting choice for optoelectronic applications [4][5][6]. However, graphene exhibits a zero-band gap due to its linear dispersion around the Dirac point, which reveals its semi-metallic nature [7][8][9]. This is responsible for graphene-based logic transistors' poor on/off ratios [10,11].…”

Section: Introductionmentioning

confidence: 99%

A DFT study of the optoelectronic properties of B and Be-doped Graphene

Agbolade,

Dafhalla,

Zayan

et al. 2024

J. Nig. Soc. Phys. Sci.

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The electronic and optical properties of Boron (B) and Beryllium (Be)-doped graphene were determined using the ab initio approach based on the generalized gradient approximations within the Full potential linearized Augmented Plane wave formalism (FP-LAPW) formalism. Our findings demonstrated that doping at the edges of graphene is notably stable. In both systems, Be-doped graphene proves more efficient in manipulating the band gap of graphene. Both B and Be induce P-type doping in graphene. B-doped graphene exhibits a negligible magnetic moment of 0.000742, suggesting its suitability for catalytic semiconductor devices. Conversely, Be-doped graphene displays a large magnetic moment of 1.045 µB indicating its potential in spintronics. Additionally, this study elucidates the influence of the dielectric matrices on the optical properties of graphene. These findings underscore a stable and controllable method for modelling graphene at its edges with B and Be atoms, opening new avenues for designing of these devices.

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“…With a tubular morphology and an open inner cavity, the newly emerging topological structure of graphene known as graphene nanoscrolls (GNS) has a large accessible surface area and a closed resemblance to multiwalled carbon nanotubes (MWCNTs). However, its walls are spiral-shaped, and its ends are capped rather than closed, as in MWCNTs but in contrast to MWCNTs, GNS exhibits a longer ion diffusion path due to its open-ended morphology [3] This long ion diffusion path leads to better electrochemical performances because it has a higher capacity for transferring ions, faster carrier mobility, and a more porous structure. Due to the lack of agglomeration or restacking, GNS provides a larger surface area for supercapacitor electrodes, improving its capacitance values compared to graphene sheets [4].…”

Section: Introductionmentioning

confidence: 99%

Graphene nanoscrolls as a symmetric supercapacitor electrode

Habib,

Javid,

Nazir

et al. 2024

Preprint

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The current investigation delineates a straightforward solvent exchange approach for the production of one-dimensional (1D) graphene nanoscrolls (GNS), originating from graphite extracted from pencil lead. The proposed rolling mechanism incorporates the utilization of two distinct solvents: N-methyl-2-pyrrolidone (NMP) boasting a high boiling point and ethanol featuring a low boiling point. The electrochemical assessment of GNS unveiled a remarkable specific capacitance of 438 F/g at a low scan rate of 10 mV/s, coupled with a high-power density of 4447 W Kg-1 and an energy density of 21 Wh Kg-1. A comprehensive analysis of electrochemical performance was conducted through cyclic voltammetry, galvanostatic charge/storage, and electrochemical impedance spectroscopy techniques. The results posit GNS as a highly promising candidate for the advancement of sophisticated electrode materials in the upcoming generation of energy storage devices, attributed to its facile synthesis, distinctive morphology, and exceptional specific capacitance.

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Latest Fabrication Approaches for Surface Modified Carbon Materials: Carbon Nanotubes and Graphene

Cited by 4 publications

References 112 publications

Advances in electrochemical sensors for real-time glucose monitoring

Advances in electrochemical sensors for real-time glucose monitoring

A DFT study of the optoelectronic properties of B and Be-doped Graphene

Graphene nanoscrolls as a symmetric supercapacitor electrode

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