Production of carbon nanotube yarns via floating catalyst chemical vapor deposition: Effect of synthesis temperature on electrical conductivity

Igbokwe, Ezinne; Daramola, Michael O.; Iyuke, Sunny E.

doi:10.1016/j.rinp.2019.102705

Cited by 9 publications

(5 citation statements)

References 44 publications

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“…It is well known that CNTs increase electrical connectivity and mechanical integrity, which improve rate capability and life cycle. The use of CNTs as a catalyst support in fuel cells can reduce Pt usage by more than 58% compared to carbon black, and doped CNTs may enable fuel cells that do not require Pt (Igbokwe et al, 2019 ).…”

Section: Resultsmentioning

confidence: 99%

Ecological Drawbacks of Nanomaterials Produced on an Industrial Scale: Collateral Effect on Human and Environmental Health

Pérez‐Hernández

Pérez-Moreno

Sarabia-Castillo

et al. 2021

Water Air Soil Pollut

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Graphical abstract Currently, hundreds of different nanomaterials with a broad application in products that make daily lives a little bit easier, in every aspect, are being produced on an industrial scale at thousands of tons per year. However, several scientists, researchers, politics, and ordinary citizens have stated their concern regarding the life cycle, collateral effects, and final disposal of these cutting-edge materials. This review summarizes, describes, and discusses all manuscripts published in the Journal Citation Reports during the last 10 years, which studied the toxicity or the effects of nanomaterials on human and environmental health. It was observed that 23.62% of the manuscripts analyzed found no ecological or human risks; 54.39% showed that several nanomaterials have toxicological effects on the ecosystems, human, or environmental health. In comparison, only 21.97% stated the nanomaterials had a beneficial impact on those. Although only 54.39% of the manuscripts reported unfavorable effects of nanomaterials on ecosystems, human, or environmental health, it is relevant because the potential damage is invaluable. Therefore, it is imperative to make toxicological studies of nanomaterials with holistic focus under strictly controlled real conditions before their commercialization, to deliver to the market only innocuous and environmentally friendly products.

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Section: Resultsmentioning

confidence: 99%

Ecological Drawbacks of Nanomaterials Produced on an Industrial Scale: Collateral Effect on Human and Environmental Health

Pérez‐Hernández

Pérez-Moreno

Sarabia-Castillo

et al. 2021

Water Air Soil Pollut

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“…All samples were dispersed in 3 mL of the selected surfactant. As the name implies, Cheap Tubes are manufactured using a process most recognized for its scalability at viable production costs [30]. The floating catalyst CVD synthesis route allows for continuous CNT production, with the catalyst and the hydrocarbon being introduced into the reaction furnace simultaneously [31].…”

Section: Extraction With Varying Cnt Concentrations From Both Suppliersmentioning

confidence: 99%

“…The floating catalyst CVD synthesis route allows for continuous CNT production, with the catalyst and the hydrocarbon being introduced into the reaction furnace simultaneously [31]. This continuous production As the name implies, Cheap Tubes are manufactured using a process most recognized for its scalability at viable production costs [30]. The floating catalyst CVD synthesis route allows for continuous CNT production, with the catalyst and the hydrocarbon being introduced into the reaction furnace simultaneously [31].…”

Section: Extraction With Varying Cnt Concentrations From Both Suppliersmentioning

confidence: 99%

Neutron Activation Analysis of Rare Earth Element Extraction from Solution through a Surfactant-Assisted Dispersion of Carbon Nanotubes

Samia,

Nolting,

Lapka

et al. 2023

Nanomaterials

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We report the preparation of surfactant-assisted carbon nanotube dispersions using gum arabic, Triton X-100, and graphene oxide as dispersing agents for removing rare earth elements in an aqueous solution. The analytical tools, including (a) scanning electron microscopy and (b) neutron activation analysis, were utilized for qualitative and quantitative examinations, respectively. Neutron activation analysis was employed to quantitatively determine the percent of extraction of nuclides onto the carbon structure, while the images produced from the scanning electron microscope allowed the morphological structure of the surfactant–CNT complex to be analyzed. This report tested the effects responsible for nuclide removal onto CNTs, including the adsorbent to target mass ratio, the CNT concentration and manufacturing process, the pH, and the ionic radius. Observable trends in nuclide extraction were found for each parameter change, with the degree of dispersion displaying high dependency.

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“…Pada prosedur CVD, sumber karbon dimasukkan ke tungku bersuhu tinggi yang disimpan pada 700℃ atau lebih di mana substrat dilapisi dengan partikel katalis, misalnya, besi atau nikel. Sebagai alternatif, ferosen atau nikel dapat diinjeksikan bersama dengan bahan baku untuk membentuk partikel katalis in situ [20]. Selama proses, bantalan molekul karbon (dari bio-feedstock / petroleum) deposit pada kelompok katalis yang terbuat dari nanopartikel logam (tersuspensi atau tidak bergerak, masing-masing), di mana mereka memecah menjadi unsur karbon.…”

Section: Gambar 2 Skema Rangkaian Cvd Termalunclassified

Sintesis Carbon Nanotube (CNT) Menggunakan Prekursor Bahan Alam Serta Modifikasi CNT Sebagai Komposit CNT/Resin Epoksi: Review

Anggoro¹,

Saraswati

2021

Proc.Chem.Conf

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Carbon Nanotube (CNT) memiliki aplikasi potensial yang luas karena sifat kimia dan fisiknya yang sangat baik. CNT disintesis menggunakan prekursor cair dari bahan alam yang. Prekursor cair dari bahan alam dimungkinkan dapat mengganti prekursor berbasis minyak bumi. Minyak kamper, jarak, kayu putih, dan kelapa sawit digunakan sebagai reservoir karbon untuk menghasilkan CNT berdinding banyak (MWCNT). Berbagai metode telah digunakan untuk menghasilkan CNT, termasuk ablasi laser, arc discharge dan proses deposisi uap kimia (CVD). Ulasan ini menjelaskan pembuatan CNT menggunakan metode CVD dikarenakan metode ini adalah metode yang umum digunakan dan sederhana. MWCNT yang dihasilkan dimodifikasi untuk membentuk komposit dengan resin epoksi.Synthesis of Carbon Nanotubes (CNT) Using Natural Material Precursors and Modified CNTs as CNT/Epoxy Resin Composite: Review. Carbon Nanotubes (CNT) have wide potential applications due to their excellent chemical and physical properties. CNTs were synthesized using liquid precursors from natural materials possibly replacing petroleum-based precursors. Camphor, jatropha, eucalyptus oil, and palm oil are used as carbon reservoirs to produce multi-walled carbon nanotubes (MWCNT). A variety of methods have been used to produce CNTs, including laser ablation, arc discharge, and chemical vapor deposition (CVD) processes. This mini-review explained the manufacture of CNTs using the CVD method as a commonly used and simple method. The synthesized CNT is then modified to be applied to form a composite with epoxy resin

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Production of carbon nanotube yarns via floating catalyst chemical vapor deposition: Effect of synthesis temperature on electrical conductivity

Cited by 9 publications

References 44 publications

Ecological Drawbacks of Nanomaterials Produced on an Industrial Scale: Collateral Effect on Human and Environmental Health

Ecological Drawbacks of Nanomaterials Produced on an Industrial Scale: Collateral Effect on Human and Environmental Health

Neutron Activation Analysis of Rare Earth Element Extraction from Solution through a Surfactant-Assisted Dispersion of Carbon Nanotubes

Sintesis Carbon Nanotube (CNT) Menggunakan Prekursor Bahan Alam Serta Modifikasi CNT Sebagai Komposit CNT/Resin Epoksi: Review

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