The release of free standing vertically-aligned carbon nanotube arrays from a substrate using CO2 oxidation

Jia Qi Huang; Qiang Zhang; Meng Qiang Zhao; Fei Wei

doi:10.1016/j.carbon.2009.12.038

The release of free standing vertically-aligned carbon nanotube arrays from a substrate using CO₂ oxidation

Jia Qi Huang, Qiang Zhang, Meng Qiang Zhao, Fei Wei^*

^*Corresponding author for this work

Tsinghua University

Research output: Contribution to journal › Article › peer-review

40 Citations (Scopus)

Abstract

Free standing vertically-aligned carbon nanotube (CNT) arrays were released from a quartz substrate on a large scale by using CO₂ as an oxidative reagent to weaken the array-substrate interaction and facilitate their harvest. During the oxidation process, amorphous carbon and carbon in contact with metallic particles were preferentially etched, leading to the easy release of high quality free standing CNT arrays. O₂ was also used as an oxidant for comparison. The O₂ showed a stronger oxidizability and caused the formation of CNTs with a turbostratic-graphitic carbon heterojunction structure. The mechanisms of CO₂ and O₂ oxidation of CNT arrays were investigated, and based on these results, CO₂ was considered a more suitable oxidant for the purpose.

Original language	English
Pages (from-to)	1441-1450
Number of pages	10
Journal	Carbon
Volume	48
Issue number	5
DOIs	https://doi.org/10.1016/j.carbon.2009.12.038
Publication status	Published - Apr 2010
Externally published	Yes

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10.1016/j.carbon.2009.12.038

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title = "The release of free standing vertically-aligned carbon nanotube arrays from a substrate using CO2 oxidation",

abstract = "Free standing vertically-aligned carbon nanotube (CNT) arrays were released from a quartz substrate on a large scale by using CO2 as an oxidative reagent to weaken the array-substrate interaction and facilitate their harvest. During the oxidation process, amorphous carbon and carbon in contact with metallic particles were preferentially etched, leading to the easy release of high quality free standing CNT arrays. O2 was also used as an oxidant for comparison. The O2 showed a stronger oxidizability and caused the formation of CNTs with a turbostratic-graphitic carbon heterojunction structure. The mechanisms of CO2 and O2 oxidation of CNT arrays were investigated, and based on these results, CO2 was considered a more suitable oxidant for the purpose.",

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AU - Zhang, Qiang

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N2 - Free standing vertically-aligned carbon nanotube (CNT) arrays were released from a quartz substrate on a large scale by using CO2 as an oxidative reagent to weaken the array-substrate interaction and facilitate their harvest. During the oxidation process, amorphous carbon and carbon in contact with metallic particles were preferentially etched, leading to the easy release of high quality free standing CNT arrays. O2 was also used as an oxidant for comparison. The O2 showed a stronger oxidizability and caused the formation of CNTs with a turbostratic-graphitic carbon heterojunction structure. The mechanisms of CO2 and O2 oxidation of CNT arrays were investigated, and based on these results, CO2 was considered a more suitable oxidant for the purpose.

AB - Free standing vertically-aligned carbon nanotube (CNT) arrays were released from a quartz substrate on a large scale by using CO2 as an oxidative reagent to weaken the array-substrate interaction and facilitate their harvest. During the oxidation process, amorphous carbon and carbon in contact with metallic particles were preferentially etched, leading to the easy release of high quality free standing CNT arrays. O2 was also used as an oxidant for comparison. The O2 showed a stronger oxidizability and caused the formation of CNTs with a turbostratic-graphitic carbon heterojunction structure. The mechanisms of CO2 and O2 oxidation of CNT arrays were investigated, and based on these results, CO2 was considered a more suitable oxidant for the purpose.

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The release of free standing vertically-aligned carbon nanotube arrays from a substrate using CO₂ oxidation

Abstract

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