Graphene and Carbon Nanotube Hybrid Structure: A Review

Xia, Kailun; Zhan, Haifei; Gu, Yuantong

doi:10.1016/j.piutam.2017.03.042

Cited by 70 publications

(31 citation statements)

References 41 publications

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“…DWCNT is considered as a special type of MWCNT wherein only two rolled up graphene sheets are present. MWCNT consists of two or more numbers of rolled-up concentric graphene sheets [22]. The diameter of SWCNT is generally up to 2 nm.…”

Section: Introductionmentioning

confidence: 99%

Graphene Nanocomposites Studied by Raman Spectroscopy

Bîru¹,

Iovu²

2018

Raman Spectroscopy

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The goal of this chapter is to provide a general introduction about graphene nanocomposites studied by Raman spectroscopy. The chapter will therefore begin with a brief description of the major Raman bands of carbon allotropes. In the following chapter a concise comparison between single walled carbon nanotubes (SWCNTs), multi-walled carbon nanotubes (MWCNTs), fullerenes and graphene is exposed. The characteristic features in Raman spectra of carbon allotropes, namely the intense signals D and G are investigated. In particular, the chapter will outline the Raman spectrum of graphene and different types of graphene oxide. The last part of the chapter is devoted to graphene nanocomposites.

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Section: Introductionmentioning

confidence: 99%

Graphene Nanocomposites Studied by Raman Spectroscopy

Bîru¹,

Iovu²

2018

Raman Spectroscopy

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“…This method combined the advantages of the high aspect ratio of CNTs and the high specific surface area provided by graphene. Experimental results showed that when CNTs were seamlessly attached to a graphene lattice, the as‐prepared 3D composite possessed enhanced electrical properties and electrochemical stability and modified mechanical and thermal properties . Interestingly, previous production of graphene‐CNT hybrid nanomaterials has relied on chemical vapor deposition (CVD) methods, which are obviously not very efficient with respect to yield or cost.…”

Section: Carbon Nanotubesmentioning

confidence: 99%

Carbon‐Based Material‐Supported Palladium Nanocatalysts in Coupling Reactions: Discussion on their Stability and Heterogeneity

Zhao

Cao

2020

Applied Organom Chemis

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Scientific interest in carbon‐based materials (CBMs) has grown dramatically over the past few decades. Due to a variety of atomic orbital hybrid forms (sp, sp2 and sp3 hybridization), carbon can form a variety of materials with diverse structures and characteristics. CBMs used as efficient catalyst supports show extensive promise in organic reactions, which is attributed to their structural similarity with organics, large specific surface area, chemical stability, and photocatalytic properties. This review presents the synthesis of CBM‐supported palladium nanocatalysts based on impregnation, template methods, etc. The CBMs include activated carbon (AC), graphene, carbon nanotubes (CNTs), and their functionalized products, as supports for improving the activity and recyclability of simple Pd nanocatalysts. After surveying the literature where these catalysts have been utilized for carbon–carbon coupling reactions, there is a particular emphasis on Suzuki, Heck, and Sonogashira reactions. The catalytic mechanism of these Pd nanocatalysts (surface heterogeneous catalysis or homogeneous catalysis caused by Pd leaching) is discussed in detail, especially the effect of Pd leaching on the stability of the catalyst.

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“…Currently, a new composite material based on two-dimensional graphene and one-dimensional carbon nanotubes (CNTs) is of great interest to this study [1][2][3][4][5][6]. There are several structural varieties of this composite material, each differing in their methods of joining a CNT and graphene, as well as their mutual orientation [7].…”

Section: Introductionmentioning

confidence: 99%

Electrical and Photovoltaic Properties of Layered Composite Films of Covalently Bonded Graphene and Single-Walled Carbon Nanotubes

et al. 2020

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In this paper, we present the results of a computational study of the electrical and photovoltaic properties of a perspective composite material; that is, layered composite films of covalently bonded graphene and single-walled carbon nanotubes (SWCNTs). The purpose of the study is to identify the topological patterns in controlling the electrical and photovoltaic properties of mono- and bilayer graphene/CNT composite films with a covalent bonding of a nanotube and graphene sheet, using in silico methods. This in silico study was carried out for the super-cells of mono- and bilayer graphene/CNT composite films with the CNTs (10,0) and (12,0) at distances between the nanotubes of 10 and 12 hexagons. This found that the type of conductivity of the nanotubes does not fundamentally affect the patterns of current flow in the graphene/CNT composite films. This control of the diameter of the nanotubes and the distance between them allows us to control the profile of the absorption spectrum of the electromagnetic waves in the range of 20–2000 nm. The control of the distance between the SWCNTs allows one to control the absorption intensity without a significant peak shift. This revealed that there is no obvious dependence of the integrated photocurrent on the distance between the nanotubes, and the photocurrent varies between 3%–4%.

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Graphene and Carbon Nanotube Hybrid Structure: A Review

Cited by 70 publications

References 41 publications

Graphene Nanocomposites Studied by Raman Spectroscopy

Graphene Nanocomposites Studied by Raman Spectroscopy

Carbon‐Based Material‐Supported Palladium Nanocatalysts in Coupling Reactions: Discussion on their Stability and Heterogeneity

Electrical and Photovoltaic Properties of Layered Composite Films of Covalently Bonded Graphene and Single-Walled Carbon Nanotubes

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