Surfactant-free synthesis of copper nanoparticles and gas phase integration in CNT-composite materials

Brunet, Paul; McGlynn, Ruairi; Alessi, Bruno; Smail, Fiona; Boies, Adam M.; Maguire, Paul; Mariotti, Davide

doi:10.1039/d0na00922a

Cited by 11 publications

(14 citation statements)

References 46 publications

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“…In our case, this could result in more rapid removal of material from the zinc wire, thus increasing the zinc content found within the CNT ribbon. [ 35 ] Using low applied powers (50 W) and adding 0.1 standard liters per minute (sLm) 2% H 2 in argon to the plasma gas mixture (1.3 sLm helium), resulted in an increased brightness of the plasma and increased sputtered material leaving the plasma region. ( Figure ) clearly shows a stripe of zinc materials deposited along the entire length of the CNT.…”

Section: Resultsmentioning

confidence: 99%

A Single‐Step Process to Produce Carbon Nanotube‐Zinc Compound Hybrid Materials

McGlynn,

Brunet,

Chakrabarti

et al. 2023

Small Methods

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An atmospheric‐pressure plasma system is developed and is used to treat carbon nanotube assemblies, producing a hybrid carbon‐zinc structure. This system is integrated into a floating‐catalyst chemical vapor deposition furnace used for the synthesis of macroscopic assemblies of carbon nanotubes to allow for the in‐line, continuous, and single‐step production of nano‐composite materials. Material is deposited from a sacrificial zinc wire in the form of nanoparticles and can coat the surface of the individual carbon nanotubes as they form. Additionally, it is found that the deposited materials penetrate further into the carbon nanotube matrix than a comparable post‐synthesis deposition, improving the uniformity of the material through the thickness. Thus, a single‐step metal‐based coating and carbon nanotube synthesis process which can form the basis of production scale manufacturing of metal‐carbon nanotube composite materials with an atmospheric‐pressure plasma system are demonstrated.

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Section: Resultsmentioning

confidence: 99%

A Single‐Step Process to Produce Carbon Nanotube‐Zinc Compound Hybrid Materials

McGlynn,

Brunet,

Chakrabarti

et al. 2023

Small Methods

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“…2). 70 A nanobubble scaffolding self-assembly strategy was introduced for manufacturing three-dimensional (3D) metallic nanonetworks by utilizing aqua ammonia as a nanobubble reservoir, avoiding the utilization of any surfactants or polymeric capping agents. 71 Accordingly, interlocked metallic nanonetworks could be obtained through the interactions between ammonia and metallic NPs (Cu, gold (Au), Ag, and Pt), as well as the precise control of the anisotropic kinetic growth along with the utilization of robust reducing agents and high concentration of aqua ammonia, providing nanonetworks with a curved geometry and abundant pores.…”

Section: Surfactant-free Synthesis Of Metal and Metal Oxide Nanomater...mentioning

confidence: 99%

Surfactant-free synthesis of metal and metal oxide nanomaterials: a perspective

Iravani¹

2023

RSC Sustain.

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“…The carbon nanotube ribbons in this work are produced by direct-spinning from a floating-catalyst chemical vapor deposition system [35][36][37]. The iron catalyst nanoparticles are formed by the thermal decomposition of ferrocene vapor carried in a carrier gas of hydrogen.…”

Section: Synthesis Of the Carbon Nanotube Ribbonsmentioning

confidence: 99%

High degree of N-functionalization in macroscopically assembled carbon nanotubes

et al. 2022

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Nitrogen doping of carbon nanomaterials has emerged as a method to develop novel material properties, though limitations in the form of extended treatment times, harsh chemical usage and limited total nitrogen content exist. Here, macroscopic ribbon-like assemblies of carbon nanotubes are functionalized with nitrogen using a simple direct current-based plasma–liquid system. This system utilizes the plasma-generated species in an ethanol:water solution with ethylenediamine as a nitrogen precursor for the nitrogen functionalization of the carbon nanotube assembly. These unique, plasma-generated species and pathways enable rapid and high levels of functionalization with the atomic concentration of nitrogen reaching 22.5%, with amine groups, pyrrolic groups and graphitic nitrogen observed in the X-ray photoelectron spectra, the highest ever achieved. This nitrogen content is demonstrated to be significantly higher than a comparative electrolysis process. This demonstrates that this plasma process enhances the availability of nitrogen from the ethylenediamine precursor, facilitating greater functionalization. Graphical abstract

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Surfactant-free synthesis of copper nanoparticles and gas phase integration in CNT-composite materials

Abstract: Surfactant free synthesis of copper nanoparticles by using atmospheric plasma pressure.

Cited by 11 publications

References 46 publications

A Single‐Step Process to Produce Carbon Nanotube‐Zinc Compound Hybrid Materials

A Single‐Step Process to Produce Carbon Nanotube‐Zinc Compound Hybrid Materials

Surfactant-free synthesis of metal and metal oxide nanomaterials: a perspective

High degree of N-functionalization in macroscopically assembled carbon nanotubes

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