Synthesis and characterization of long-CNTs by electrical arc discharge in deionized water and NaCl solution

Sari, A. H.; Khazali, Arezoo; Parhizgar, Sara Sadat

doi:10.1007/s40089-018-0227-5

Cited by 41 publications

(16 citation statements)

References 24 publications

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“…However, the low production rate of CNTs at a reasonable cost is the most important limiting factor in meeting this global demand. Among the three primary methods of CNT production, which are laser ablation [13], chemical vapor deposition (CVD) [14], and arc discharge [15], the CVD method is the most efficient [14] way to meet the estimated global CNT demand. The CVD method can potentially produce high-quality CNT at a large-scale at a comparatively lower cost than the other two methods.…”

Section: Introductionmentioning

confidence: 99%

Effect of a Metallocene Catalyst Mixture on CNT Yield Using the FC-CVD Process

et al. 2022

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This work studies synthesis of carbon nanotube (CNT) sheet using the high temperature (1400 °C) floating catalyst chemical vapor deposition (FC-CVD) method. Three metallocenes—ferrocene, nickelocene, cobaltocene—and their combinations are used as precursors for metal catalysts in the synthesis process. For the carbon source, an alcohol fuel, a combination of methanol and n-hexane (9:1), is used. First, the metallocenes were dissolved in the alcohol fuel. Then, the fuel mixture was injected into a tube furnace using an ultrasonic atomizer with Ar/H2 carrier gas in a ratio of about 12/1. The synthesis of CNTs from a combination of two or three metallocenes reduces the percentage of metal catalyst impurity in the CNT sheet. However, there is an increase in structural defects in the CNTs when using mixtures of two or three metallocenes as catalysts. Furthermore, the specific electrical conductivity of the CNT sheet was highest when using a mixture of ferrocene and cobaltocene as the catalyst. Overall, the multi-catalyst method described enables tailoring certain properties of the CNT sheet. However, the standard ferrocene catalyst seems most appropriate for large-scale manufacturing at the lowest cost.

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Section: Introductionmentioning

confidence: 99%

Effect of a Metallocene Catalyst Mixture on CNT Yield Using the FC-CVD Process

et al. 2022

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“…[15,16] To improve the out-of-plane properties of the TSC, z-fiber was basically introduced to two dimensional (2D) biaxial textile fabric by using stitching, [17] three dimensional (3D) weaving, [18][19][20] 3D braiding, [21] and 3D nonwoven techniques. [16] Recently, single or multiwall carbon nanotubes (SWCNTs or MWCNTs) were developed by using various techniques such as arc discharge, [22][23][24][25] laser ablation, [26][27][28] or chemical vapor deposition (CVD). [29][30][31][32][33] They are incorporated in TSC directly like growing on the fiber or fabric surfaces [34] and indirectly like mixing with matrix or sizing materials first, then applied on textile architectures.…”

Section: Introductionmentioning

confidence: 99%

Carbon nanotubes in carbon/epoxy multiscale textile preform composites: A review

Bilişik

Syduzzaman

2021

Polymer Composites

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Carbon nanotube integrated textile structural composites are one of the demanded materials especially for space/aerospace and defense industries in the 21st century due to their better damage tolerance properties compared to the metal and ceramics. This review paper exclusively performed on carbon nanotubes (CNTs) added carbon fiber/epoxy multiscale composites, including recent innovative methods of integrating CNTs to carbon filaments using the direct method such as growing on fiber, chemical grafting, and nanostitching or indirect methods such as mixing with matrix and application via lay-up and dip coating. In addition, various composite fabrication techniques, including vacuum bag molding, resin transfer molding, and resin film infusion molding techniques were discussed. Critical thermo-mechanical and electrical properties considering numerous micromechanics based composite modeling and computational analysis were explained. The review concludes that CNTs added carbon fiber/epoxy multiscale composites possess considerable potential in the use of advanced nanocomposites applications.

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“…Apart from these two, there are double-walled carbon nanotubes (DWCNTs) [ 57 , 58 ] and few-walled carbon nanotubes (FWCNTs) [ 59 , 60 ], but these are mostly used for characterization purposes. Some of the synthesis processes used to develop CNTs are chemical vapor deposition (CVD) [ 61 , 62 ], arc-discharge [ 63 , 64 ], laser ablation [ 65 , 66 ] and liquid electrolysis [ 67 , 68 ]. The selection of each of these processes depends on the type of CNTs required for the chosen application.…”

Section: Introductionmentioning

confidence: 99%

A Review of the Use of Carbon Nanotubes and Graphene-Based Sensors for the Detection of Aflatoxin M1 Compounds in Milk

Gao

Nag

et al. 2021

Sensors

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This paper presents a comprehensive review of the detection of aflatoxin compounds using carbon allotrope-based sensors. Although aflatoxin M1 and its derivative aflatoxin B1 compounds have been primarily found in milk and other food products, their presence above a threshold concentration causes disastrous health-related anomalies in human beings, such as growth impairment, underweight and even carcinogenic and immunosuppressive effects. Among the many sensors developed to detect the presence of these compounds, the employment of certain carbon allotropes, such as carbon nanotubes (CNTs) and graphene, has been highly preferred due to their enhanced electromechanical properties. These conductive nanomaterials have shown excellent quantitative performance in terms of sensitivity and selectivity for the chosen aflatoxin compounds. This paper elucidates some of the significant examples of the CNTs and graphene-based sensors measuring Aflatoxin M1 (ATM1) and Aflatoxin B1 (AFB1) compounds at low concentrations. The fabrication technique and performance of each of the sensors are shown here, as well as some of the challenges existing with the current sensors.

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Synthesis and characterization of long-CNTs by electrical arc discharge in deionized water and NaCl solution

Cited by 41 publications

References 24 publications

Effect of a Metallocene Catalyst Mixture on CNT Yield Using the FC-CVD Process

Effect of a Metallocene Catalyst Mixture on CNT Yield Using the FC-CVD Process

Carbon nanotubes in carbon/epoxy multiscale textile preform composites: A review

A Review of the Use of Carbon Nanotubes and Graphene-Based Sensors for the Detection of Aflatoxin M1 Compounds in Milk

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