Publication detail

Carbon nanotubes grown by microwave torch for ammonia gas detection

KAUSHIK, P. BANNOV, A. JAŠEK, O. PRÁŠEK, J. ZAJÍČKOVÁ, L.

Original Title

Carbon nanotubes grown by microwave torch for ammonia gas detection

Type

conference paper

Language

English

Original Abstract

Multi-walled carbon nanotubes (MWCNTs) are highly desirable for the integration into functional devices in particular for sensing applications. MWCNTs for testing the gas sensing properties were prepared on Si substrates coated with SiO2 film. The catalytic Fe films were deposited by vacuum evaporation. Carbon nanotubes (CNTs) were grown in the microwave (MW) plasma torch. The gas sensing properties were determined as a change of the sample resistance upon its exposure to ammonia. The response of the sensors was determined at different ammonia concentrations, namely 100 ppm, 250 ppm and 500 ppm, at room temperature. The chemiresistive sensor exhibited increasing resistance of the MWCNT layer when exposed to ammonia. The response of the sensors at 100 ppm, 250 ppm and 500 ppm NH3 was in the ranges of 0.3–0.9 %, 0.7–1.1 %, and 1.0–1.5 %, respectively.

Keywords

Multi-walled carbon nanotubes, plasma torch, synthesis, gas sensor, ammonia

Authors

KAUSHIK, P.; BANNOV, A.; JAŠEK, O.; PRÁŠEK, J.; ZAJÍČKOVÁ, L.

Released

7. 6. 2016

Publisher

Matfyzpress

Location

Prague

ISBN

978-80-7378-333-4

Book

WDS'16 Proceedings of Contributed Papers - Physics

Pages from

171

Pages to

175

Pages count

5

BibTex

@inproceedings{BUT131122,
  author="Preeti {Kaushik} and Alexander G. {Bannov} and Ondřej {Jašek} and Jan {Prášek} and Lenka {Zajíčková}",
  title="Carbon nanotubes grown by microwave torch for ammonia gas detection",
  booktitle="WDS'16 Proceedings of Contributed Papers - Physics",
  year="2016",
  pages="171--175",
  publisher="Matfyzpress",
  address="Prague",
  isbn="978-80-7378-333-4"
}