Highly otimized nitrogen-doped MWCNTs through in-depth parametric study using design of experiments

The in-situ nitrogen doping of multiwalled carbon nanotubes via chemical vapor deposition is investigated employing design of experiments (DoE). The establishment of empirical DoE models allowed for the prediction of product features as a function of process conditions in order to systematically synthesize tailor-made nitrogen-doped carbon nanotubes. The high informative content of this approach revealed effects of individual parameters and their interaction with each other. Hence, new valuable insights into the effect of temperature, injection rate, and carrier gas flow on the doping level were obtained which give motivation to approach further theoretical studies on the doping mechanism. Ultimately, competitive nitrogen-doped carbon nanotube features were optimized and yielded promising combinations of achieved doping level, graphitization, and aspect ratios in comparison to present literature values.

Subjects

N-CNT

pyridine

CVD

DoE

graphitization

Raman

DDC Class

540: Chemie

620: Ingenieurwissenschaften

660: Technische Chemie

Funding(s)

Open Access Publizieren 2018 - 2019 / TU Hamburg

More Funding Information

Deutsche Forschungsgemeinschaft (DFG)

Lizenz

https://creativecommons.org/licenses/by/4.0/

Name

nanomaterials-09-00643.pdf

Size

6.71 MB

Format

Adobe PDF

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Highly otimized nitrogen-doped MWCNTs through in-depth parametric study using design of experiments