What question did this study set out to answer?

To investigate how high-temperature thermal annealing alters the oxidation behavior and air stability of multiwalled carbon nanotubes.

May 3, 2002Nano Letters

Thermogravimetric Analysis of the Oxidation of Multiwalled Carbon Nanotubes: Evidence for the Role of Defect Sites in Carbon Nanotube Chemistry

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Authors

DBDavid BomUniversity of Kentucky RARodney AndrewsUniversity of Alicante DJDavid A. JacquesUNSW Sydney

Discussion

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Implication

Thermogravimetric study reveals enhanced air stability in annealed multiwalled carbon nanotubes, indicating that defect site removal prevents thermal oxidative destruction.

Key Points

To investigate how high-temperature thermal annealing alters the oxidation behavior and air stability of multiwalled carbon nanotubes.
Conducted thermogravimetric analysis (TGA) to measure thermal oxidative stability in air.
Compared multiwalled carbon nanotubes annealed between 2200 and 2800 °C against as-produced nanotubes, diamond, graphite, and annealed diamond.
Multiwalled carbon nanotubes annealed at 2200 to 2800 °C showed significantly greater air stability than raw nanotubes, diamond, graphite, and annealed diamond, achieving stability on par with annealed graphite.
Defect sites on nanotube ends and sidewalls served as primary initiation points for oxidative destruction, which thermal annealing eliminated to enhance resistance.

Cite This Study

Bom et al. (2002) studied this question.

synapsesocial.com/papers/69fd7369dc84976daa270444 https://doi.org/10.1021/nl020297u

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May 3, 2002Nano Letters

Thermogravimetric Analysis of the Oxidation of Multiwalled Carbon Nanotubes: Evidence for the Role of Defect Sites in Carbon Nanotube Chemistry

View Full Paper

Ask AI

Bookmark

Authors

DBDavid BomUniversity of Kentucky RARodney AndrewsUniversity of Alicante DJDavid A. JacquesUNSW Sydney

Discussion

Member takes

Implication

Thermogravimetric study reveals enhanced air stability in annealed multiwalled carbon nanotubes, indicating that defect site removal prevents thermal oxidative destruction.

Key Points

To investigate how high-temperature thermal annealing alters the oxidation behavior and air stability of multiwalled carbon nanotubes.
Conducted thermogravimetric analysis (TGA) to measure thermal oxidative stability in air.
Compared multiwalled carbon nanotubes annealed between 2200 and 2800 °C against as-produced nanotubes, diamond, graphite, and annealed diamond.
Multiwalled carbon nanotubes annealed at 2200 to 2800 °C showed significantly greater air stability than raw nanotubes, diamond, graphite, and annealed diamond, achieving stability on par with annealed graphite.
Defect sites on nanotube ends and sidewalls served as primary initiation points for oxidative destruction, which thermal annealing eliminated to enhance resistance.

Cite This Study

Bom et al. (2002) studied this question.

synapsesocial.com/papers/69fd7369dc84976daa270444 https://doi.org/10.1021/nl020297u

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