Catalyst effect on the preparation of single-walled carbon nanotubes by a modified arc discharge

Zhao, Xin; Zhao, Tingkai; Peng, Xiarong; Hu, Jingtian; Yang, Wenbo

doi:10.1080/1536383x.2018.1492560

Cited by 12 publications

(2 citation statements)

References 21 publications

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“…Higher temperatures (over 1700 • C) are used in the arcdischarge method for CNT synthesis, which often results in expansion of CNTs with fewer structural flaws [106]. In another study, SWCNTs were produced by Zhao et al in 2019 utilizing a modified arc-discharge furnace with buffer gas of 500 Torr helium at 600 • C [107]. Transmission electron microscopy (TEM), X-ray diffraction (XRD), and Raman spectroscopy were used to investigate the impact of the catalyst type on the generation of the SWCNTs.…”

Section: Arc Dischargementioning

confidence: 99%

Oxygenated Hydrocarbons from Catalytic Hydrogenation of Carbon Dioxide

2023

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Once fundamental difficulties such as active sites and selectivity are fully resolved, metal-free catalysts such as 3D graphene or carbon nanotubes (CNT) are very cost-effective substitutes for the expensive noble metals used for catalyzing CO2. A viable method for converting environmental wastes into useful energy storage or industrial wealth, and one which also addresses the environmental and energy problems brought on by emissions of CO2, is CO2 hydrogenation into hydrocarbon compounds. The creation of catalytic compounds and knowledge about the reaction mechanisms have received considerable attention. Numerous variables affect the catalytic process, including metal–support interaction, metal particle sizes, and promoters. CO2 hydrogenation into different hydrocarbon compounds like lower olefins, alcoholic composites, long-chain hydrocarbon composites, and fuels, in addition to other categories, have been explained in previous studies. With respect to catalyst design, photocatalytic activity, and the reaction mechanism, recent advances in obtaining oxygenated hydrocarbons from CO2 processing have been made both through experiments and through density functional theory (DFT) simulations. This review highlights the progress made in the use of three-dimensional (3D) nanomaterials and their compounds and methods for their synthesis in the process of hydrogenation of CO2. Recent advances in catalytic performance and the conversion mechanism for CO2 hydrogenation into hydrocarbons that have been made using both experiments and DFT simulations are also discussed. The development of 3D nanomaterials and metal catalysts supported on 3D nanomaterials is important for CO2 conversion because of their stability and the ability to continuously support the catalytic processes, in addition to the ability to reduce CO2 directly and hydrogenate it into oxygenated hydrocarbons.

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Section: Arc Dischargementioning

confidence: 99%

Oxygenated Hydrocarbons from Catalytic Hydrogenation of Carbon Dioxide

2023

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“…In Figure 8, the schematic representation of SWCNTs and SWCNTs is depicted. CNTs can be synthesized by various methods, including laser ablation, chemical vapour deposition (CVD), and arc discharge [162][163][164].…”

Section: Carbon Nanotubes-modified Electrodesmentioning

confidence: 99%

Carbonaceous Nanomaterials Employed in the Development of Electrochemical Sensors Based on Screen-Printing Technique—A Review

Bounegru

Apetrei

2020

Catalysts

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This paper aims to revise research on carbonaceous nanomaterials used in developing sensors. In general, nanomaterials are known to be useful in developing high-performance sensors due to their unique physical and chemical properties. Thus, descriptions were made for various structural features, properties, and manner of functionalization of carbon-based nanomaterials used in electrochemical sensors. Of the commonly used technologies in manufacturing electrochemical sensors, the screen-printing technique was described, highlighting the advantages of this type of device. In addition, an analysis was performed in point of the various applications of carbon-based nanomaterial sensors to detect analytes of interest in different sample types.

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