Purification of carbon nanotubes produced by the electric arc-discharge method

Ribeiro, Hélio; Schnitzler, Mariane C.; Silva, Wellington Marcos da; Santos, Adelina P.

doi:10.1016/j.surfin.2021.101389

Cited by 24 publications

(10 citation statements)

References 85 publications

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“…Riberio et al reported the synthesis of CNTs by ADM, which was later on purified in order to remove the heavy metals, graphitized carbon, and amorphous carbon. Further analysis revealed that about 75% impurity was removed by adopting current techniques [27].…”

Section: Recent Advances In the Synthesis Methods Of Cntsmentioning

confidence: 99%

Recent Advances in Methods for Synthesis of Carbon Nanotubes and Carbon Nanocomposite and their Emerging Applications: A Descriptive Review

Gacem

Modi²,

Yadav

et al. 2022

Journal of Nanomaterials

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Nanomaterials have gained huge applications ever since their discoveries, especially in the field of electronics, medicine, research, and environmental cleanup. Nanomaterials have a high surface area-to-volume ratio along with high surface energies making them suitable for such wide applications. Carbon nanotubes (CNTs) and carbon nanocomposite (CNC) materials are remarkable nanomaterials that have become the backbone of most industries these days. Both materials have gained huge attention in the last decade by the scientific community. CNTs come in two variants, i.e., single-walled CNTs (SW-CNTS) and multiwalled CNTs (MW-CNTs). Due to their wider applications, CNT synthesis is currently emerging with the advancement in technology. Currently, CNTs are being synthesized by chemical as well as physical approaches. The current review article focuses on the vital research and application for the synthesis of CNTs depending on the quality of the nanotube materials. Controlled routes to their organization and assembly are also discussed in detail over here. The aim is to provide recent advances in the synthesis methods, of CNTs, their current applications, future applications, and the potential of agrowaste and industrial waste for the synthesis of CNTs and nanomaterials.

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Section: Recent Advances In the Synthesis Methods Of Cntsmentioning

confidence: 99%

Recent Advances in Methods for Synthesis of Carbon Nanotubes and Carbon Nanocomposite and their Emerging Applications: A Descriptive Review

Gacem

Modi²,

Yadav

et al. 2022

Journal of Nanomaterials

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“…In order to fill the CNTs, their ends need to be opened first. Heat treatment in an oxidizing environment, such as H 2 O 2 , O 2 [36] , O 3 [37] , HNO 3 , H 2 SO 4 [38] , KMnO 4 [39] , or Br 2 [40] is mainly used opening approaches. To obtain a more pure CNT, combined thermal treatment and concentrated acid treatment are necessary to remove the various contaminants, such as amorphous carbon, graphite electrode particles, and catalyst [41] .…”

Section: Ex-situ Fillingmentioning

confidence: 99%

Filled carbon-nanotube heterostructures: from synthesis to application

2023

Microstructures

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Carbon nanotubes (CNTs) have a one-dimensional (1D) hollow tubular structure formed by graphene curling with remarkable electronic, optical, mechanical, and thermal properties. Except for the applications based on their intrinsic properties, such as electronic devices, THz sensors, and conductive fiber, CNTs can also act as nanovessels for nano-chemical reactions and hosts for encapsulating various materials to form heterostructures. In this review, we have summarized the research status on filled carbon-nanotube heterostructures from four aspects: synthesis, morphological and electronic structure analysis, potential applications, and perspective. We begin with an overview of the filling methods and mechanisms of the 1D heterostructures. Following that, we discuss their properties in terms of morphological and electronic structure. The burgeoning applications of 1D heterostructures in nano-electronic, energy, storage, catalysis, and other fields are then thoroughly overviewed. Finally, we offer a brief perspective on the possible opportunities and challenges of filled CNTs heterostructures.

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“…Известно, что при синтезе углеродных нанотрубок (УНТ) [1] зачастую приходится иметь дело с присутствием различного рода примесей, удаление которых очень важно при решении многих прикладных задач, поскольку они существенным образом могут изменить свойства УНТ. При этом очистка от примесей является наиболее трудоемким этапом [2][3][4]. Однако в некоторых случаях наличие примеси может не оказывать существенного воздействия на характер исследуемого процесса.…”

Section: Introductionunclassified