Unidirectional and bi-directional growth of carbon nanotubes on the catalytic Co–Zr–N-(O) material

Mierczyński, Paweł; Dubkov, S. V.; Vasilev, Krasimir; Maniecki, Tomasz P.; Kitsyuk, E. P.; Yeritsyan, G.S.; Szynkowska, M. I.; Trifonov, A. Yu.; Гаврилов, С. А.; Громов, Д. Г.

doi:10.1016/j.jmrt.2021.03.015

“…At 450 °C, carbon nanofibers (CNFs) predominantly formed (Figure 3A), with catalyst nanoparticles fostering carbon growth from one end (referred to as tip‐growth [21] ). As the reaction temperature rose to 600 °C, both CNFs and CNTs were observed (Figure 3B), including tip‐growth and bidirectional‐growth [22] . At 750 °C, the resultant carbon structures possessed a hollow configuration characteristic of CNTs (Figures 2C–D), with metal nanoparticles catalyzing carbon growth bidirectionally [16] …”

Section: Resultsmentioning

confidence: 99%

“…As the reaction temperature rose to 600 °C, both CNFs and CNTs were observed (Figure 3B), including tip-growth and bidirectionalgrowth. [22] At 750 °C, the resultant carbon structures pos-…”

Section: Resultsmentioning

confidence: 99%

Converting Carbon Dioxide into Carbon Nanotubes by Reacting with Ethane

Yuan,

Huang,

Hwang

et al. 2024

Angewandte Chemie

0

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The urgency to mitigate environmental impacts from anthropogenic CO2 emissions has propelled extensive research efforts on CO2 reduction. The current work reports a novel approach involving transforming CO2 and ethane into carbon nanotubes (CNTs) using earth‐abundant metals (Fe, Co, Ni) at 750 °C. This route facilitates long‐term carbon storage via generating high‐value CNTs and produces valuable syngas with adjustable H2/CO ratios as byproducts. Without CO2, direct pyrolysis of ethane undergoes rapid deactivation. The participation of CO2 not only enhances the durability of the catalyst, but also contributes about 30% of the CNTs production, presenting a viable solution to CO2 challenges. The CNT morphology depends on the catalyst used. Co‐ and Ni‐based catalysts produce CNT with a 20 nm diameter and micrometer length, whereas Fe‐based catalysts yield bamboo‐like structures. This work represents a pioneering effort in utilizing CO2 and ethane for CNT production with potential environmental and economic benefits.

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“…Importantly, studies have brought to light that the changes in catalyst and substrate materials will directly affect the morphology and properties of the arrays. [10][11][12][13][14][15][16][17] High quality catalysts directly determine the quality of the CNT arrays. The preparation methods of catalysts include powder catalysts, flat substrate supported catalysts, and floating catalysts.…”

Section: Introductionmentioning

confidence: 99%

Machine learning for the regulation strategy and mechanism of the integrated growth of carbon nanotube arrays

Chu,

Ji,

Zhang

et al. 2023

New J. Chem.

1

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Converting Carbon Dioxide into Carbon Nanotubes by Reacting with Ethane

Yuan,

Huang,

Hwang

et al. 2024

Angew Chem Int Ed

0

View full text Add to dashboard Cite

The urgency to mitigate environmental impacts from anthropogenic CO2 emissions has propelled extensive research efforts on CO2 reduction. The current work reports a novel approach involving transforming CO2 and ethane into carbon nanotubes (CNTs) using earth‐abundant metals (Fe, Co, Ni) at 750 °C. This route facilitates long‐term carbon storage via generating high‐value CNTs and produces valuable syngas with adjustable H2/CO ratios as byproducts. Without CO2, direct pyrolysis of ethane undergoes rapid deactivation. The participation of CO2 not only enhances the durability of the catalyst, but also contributes about 30% of the CNTs production, presenting a viable solution to CO2 challenges. The CNT morphology depends on the catalyst used. Co‐ and Ni‐based catalysts produce CNT with a 20 nm diameter and micrometer length, whereas Fe‐based catalysts yield bamboo‐like structures. This work represents a pioneering effort in utilizing CO2 and ethane for CNT production with potential environmental and economic benefits.

show abstract

Unidirectional and bi-directional growth of carbon nanotubes on the catalytic Co–Zr–N-(O) material

Cited by 5 publications

References 33 publications

Converting Carbon Dioxide into Carbon Nanotubes by Reacting with Ethane

Converting Carbon Dioxide into Carbon Nanotubes by Reacting with Ethane

Machine learning for the regulation strategy and mechanism of the integrated growth of carbon nanotube arrays

Converting Carbon Dioxide into Carbon Nanotubes by Reacting with Ethane

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