Carbon nanotube columns for flow systems: influence of synthesis parameters

Quinson, Jonathan; Bottein, Thomas; Dillon, Frank; Meysami, Seyyed Shayan; Grobert, Nicole

doi:10.1039/d0na00247j

Cited by 2 publications

(2 citation statements)

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“…It encouraged CNT length and yield as a whole. Since these carriers or protective gases (at least the first three) were considered inert and unreactive in the formation of CNTs, this was not previously anticipated [97]. In a similar study by Quinson et al on the effect of carrier gas flow rate, it was discovered that a flow rate of 2500 sccm is preferable to values of 1000 or 5000 sccm for producing homogeneous, vertically aligned MWCNTs [98].…”

Section: Carrier Gasesmentioning

confidence: 93%

“…Another critical factor in the formation of CNTs is the carrier gas and the flow rate; to promote the development of fine nanotubes, a low catalyst concentration, and a high carrier gas flow rate could be necessary. The formation of CNTs has been seen to be influenced by a variety of carrier gases, including nitrogen (N 2 ), argon (Ar), ammonia (NH 3 ), helium (He), and hydrogen (H 2 ) [97]. A study by Panahi et al on the effects of different carrier gases observed that diatomic nitrogen (N 2 ) performed better when evaluated as a carrier gas for CNT formation of CNTs, outperforming the other three (N 2 , Ar, He, and CO 2 ).…”

Section: Carrier Gasesmentioning

confidence: 99%

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Valorization of Plastic Wastes for the Development of Adsorbent Designed for the Removal of Emerging Contaminants in Wastewater

Onu,

Ayeleru,

Modekwe

et al. 2023

Adv Environ Eng Res

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Plastic waste accrual in the environment has been identified as the topmost significant global issue related to modern civilization. Traditional waste disposal methods, such as open burning, landfilling, and incineration, have increased greenhouse gas emissions in economic and material losses. Unless immediate action is made to curtail demand, prolong product lifespans, enhance waste management, and encourage recyclability, plastic pollution will increase due to an almost threefold increase in plastic use spurred by growing populations and affluence. Plastic production primarily is from crude oil or gas despite more than a fourfold growth from ~6.8 million tonnes in 2000 to ~30 million tonnes in 2019; only ~6% of the world’s total plastics production is made from recycled plastics. The competitiveness and profitability of secondary markets may increase with the establishment of recycled content objectives and advancements in recycling technology. In this review, emerging approaches and the creation of value-added materials from waste plastics such as carbon nanotubes and other carbonaceous nanomaterials production, the environmental impacts of plastic waste, African status concerning plastic waste, the importance of modern techniques in plastic waste management, and the circular economy impact on plastic waste utilization are the high points of this study.

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Section: Carrier Gasesmentioning

confidence: 93%

Section: Carrier Gasesmentioning

confidence: 99%