Publication detail

Investigation of ammonia gas sensing properties of graphite oxide

BANNOV, A. PRÁŠEK, J. JAŠEK, O. SHIBAEV, A. ZAJÍČKOVÁ, L.

Original Title

Investigation of ammonia gas sensing properties of graphite oxide

Type

conference paper

Language

English

Original Abstract

In this paper a graphite oxide is investigated as a possible sensing layer of room temperature ammonia chemiresistive gas sensor. The sensing properties were tested in a wide range of ammonia concentrations in air (10-1000 ppm) and under different humidity levels (3-65 %). It was concluded that the graphite oxide based sensor possessed high response to NH3 in synthetic air (ΔR/R0 ranged from 2.5 to 7.4 % for concentrations of 100-500 ppm and 3 % relative humidity) with negligible cross-sensitivity towards H2 and CH4. It was determined that the sensor recovery rate was improved with ammonia concentration growth. Increasing of ambient relative humidity led to increase of sensor response. The highest response of 22.2 % for 100 ppm of ammonia was achieved at 65 % relative humidity level.

Keywords

Gas sensor, ammonia, graphite oxide, response, humidity, cross-sensitivity.

Authors

BANNOV, A.; PRÁŠEK, J.; JAŠEK, O.; SHIBAEV, A.; ZAJÍČKOVÁ, L.

Released

4. 9. 2016

Publisher

Elsevier

Location

Budapest

ISBN

1877-7058

Periodical

Procedia Engineering

Year of study

168

Number

1

State

Kingdom of the Netherlands

Pages from

231

Pages to

234

Pages count

4

URL

https://www.sciencedirect.com/science/article/pii/S1877705816334798

Full text in the Digital Library

http://hdl.handle.net/11012/204224

BibTex

@inproceedings{BUT128421,
  author="Alexander G. {Bannov} and Jan {Prášek} and Ondřej {Jašek} and Alexander A. {Shibaev} and Lenka {Zajíčková}",
  title="Investigation of ammonia gas sensing properties of graphite oxide",
  booktitle="Proceedings of XXX Eurosensors 2016",
  year="2016",
  journal="Procedia Engineering",
  volume="168",
  number="1",
  pages="231--234",
  publisher="Elsevier",
  address="Budapest",
  doi="10.1016/j.proeng.2016.11.169",
  issn="1877-7058",
  url="https://www.sciencedirect.com/science/article/pii/S1877705816334798"
}