Synthesis and characterization of graphene/carbon nanotube hybrid: effects of Ni catalyst thickness and H2 flow rate on growth and morphological structure

Yeşilbağ, Yaşar Özkan; Yesilbag, Fatma Nur Tuzluca; Huseyin, Ahmad; Tuzluca, Metin; Ismail, Ismanizan; Ertuğrul, Mehmet

doi:10.1007/s10854-021-05519-z

Cited by 7 publications

(3 citation statements)

References 51 publications

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“…A photograph of the Al foil on which the VA-CNTs grew after the experiment is given in Figure 1b. and O=C-OH binding energies, respectively (Jerng et al, 2011;Yesilbag et al, 2021). In addition, the O 1s peak is also due to oxygen adsorbed on the carbon surface (Figure 5c).…”

Section: Methodsmentioning

confidence: 97%

“…Besides its light weight and high specific surface area, CNTs have superior mechanical, thermal, chemical, and electrical properties, thus attracting attention for many applications in many fields (Yilmaz et al, 2017;Yesilbag et al, 2021). CNTs most important applications are in electronics, optoelectronics, and energy storage applications such as solar cells, sensors, transistors, and batteries, field emission characteristics (Bondavalli et al, 2009;Chachuli et al, 2021;Jo et al, 2003;Jeon et al, 2019;Wang et al, 2003).…”

Section: Introductionmentioning

confidence: 99%

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Large-area synthesis of vertically aligned carbon nanotubes growth on the aluminum foil via FCCVD method

Yeşilbağ

Yesilbag

Huseyin

et al. 2022

Erzincan Üniversitesi Fen Bilimleri Enstitüsü Dergisi

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In this study, VA-CNTs were synthesized homogeneously on Al foil at 610 °C temperature by Floating Catalyst Chemical Vapor Deposition (FCCVD) method in a tube furnace. While ethanol was used as the carbon source, ferrocene was used as the catalyst. VA-CNTs with diameters in the range of ~10-15 nm and lengths in the range of ~30-35 µm were obtained. Structural and morphological analyzes of VA-CNTs were determined using X-Ray Diffraction (XRD), Field Emission Scanning Electron Microscopy (FESEM), Energy Dispersion X-Ray Spectroscopy (EDS), Raman Spectroscopy and X-Ray Photoelectron Spectroscopy (XPS). These VA-CNTs, synthesized by the FCCVD method on an Al foil in a large area, have the potential applications to be used especially in energy storage, optoelectronic, and sensor.

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Section: Methodsmentioning

confidence: 97%

Section: Introductionmentioning

confidence: 99%

Large-area synthesis of vertically aligned carbon nanotubes growth on the aluminum foil via FCCVD method

Yeşilbağ

Yesilbag

Huseyin

et al. 2022

Erzincan Üniversitesi Fen Bilimleri Enstitüsü Dergisi

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“…Because of this, the technique can be operated at low temperatures without damaging the substrate and forming vertically aligned carbon nanostructures [20]. The nucleation of the carbon nanostructure in PECVD is controlled by the plasma species (ions, electrons, and neutral atoms) generated, catalyst film thickness, precursor gas flow rate, and plasma control parameters (gas pressure, applied plasma power, bias) [21][22][23][24].…”

Section: Introductionmentioning

confidence: 99%

Analytical modeling of nucleation and growth of graphene layers on CNT array and its application in field emission of electrons

Sharma,

Sharma

2024

Phys. Scr.

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Analytical modeling of the growth of Carbon Nanotube (CNT) array with precipitation of planar graphene layers (PGLs) on top, i.e., CNT-PGL hybrid, is executed. C2H2/NH3 plasma with varying C2H2 flow, catalyst film thickness and substrate temperature is utilized to model the growth of CNT array followed by precipitation of graphene layer on its top at a cooling rate of (15℃)⁄s in N2 environment. As the C2H2 flow rate and catalyst film thickness increase, an increase and subsequent decrease in the average growth rate of CNTs is observed. After cooling Plasma Enhanced Chemical Vapor Deposition (PECVD) chamber from 750℃ down to 250℃ in N2 environment and increasing the thickness of catalyst film, the number of graphene layer increases, hence graphene sheet thickness. Furthermore, the field enhancement factor of CNT array and CNT-PGL hybrid is computed, taking into consideration the average height of nanotube, distance between them and penetration of electric field owing to graphene coverage. It is found that field enhancement factor of the densely packed CNT can be enhanced by incorporating planar graphene layers on its top. The obtained results are in good agreement with the existing experimental observations.

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A Review of Graphene Research and Its Outputs: Waste Carbon Source and Synthesis Technique

Nurfazianawatie,

Omar,

Rosman

et al. 2023

Green Infrastructure

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Synthesis and characterization of graphene/carbon nanotube hybrid: effects of Ni catalyst thickness and H2 flow rate on growth and morphological structure

Cited by 7 publications

References 51 publications

Large-area synthesis of vertically aligned carbon nanotubes growth on the aluminum foil via FCCVD method

Large-area synthesis of vertically aligned carbon nanotubes growth on the aluminum foil via FCCVD method

Analytical modeling of nucleation and growth of graphene layers on CNT array and its application in field emission of electrons

A Review of Graphene Research and Its Outputs: Waste Carbon Source and Synthesis Technique

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