Publication detail

Raman and XPS studies of ammonia sensitive polypyrrole nanorods and nanoparticles

ŠETKA, M. CALAVIA, R. VOJKŮVKA, L. LLOBET, E. DRBOHLAVOVÁ, J. VALLEJOS VARGAS, S.

Original Title

Raman and XPS studies of ammonia sensitive polypyrrole nanorods and nanoparticles

Type

journal article in Web of Science

Language

English

Original Abstract

Raman and XPS studies of ammonia sensitive polypyrrole nanorods and nanoparticles, respectively and tested upon ammonia exposure using Raman and X-ray photonelectrone spectroscopy (XPS). Characterization of both nanomaterilas via Raman spectroscopy demostrates the formation of PPy, displaying vibration bands consistent with the literature. Additionally, XPS reveals the presence of neutral PPy species as major components in PPy NRs and PPy NPs, and other species including polarons and bipolarons. Raman and XPS analysis after ammonia exposure show changes in physical/chemical properties of PPy, confirimg the potential of both samples for ammonia sensing. Results demostrate that electrochemically synthesized NRs involve both proton and electron transfer mechansims during ammonia exposure, as oposit to the chemically synthesized NPs, which show the mechamism dominated by electron transfer. Thus, the different detection mechanisms in PPy NRs and PPy NPs appear to be connected to the particular morphological and chemical composition of each film. These results contribute to elucidate the mechanisms involved in ammonia detection and influence of the synthesis routes and physical/chemical characteristics of PPy.

Keywords

sensing properties, surface, sensor, spectroscopy, polypyrrole, films, fabrication, nanostructures, indetification, conductivity,

Authors

ŠETKA, M.; CALAVIA, R.; VOJKŮVKA, L.; LLOBET, E.; DRBOHLAVOVÁ, J.; VALLEJOS VARGAS, S.

Released

11. 6. 2019

Publisher

Springer Nature

ISBN

2045-2322

Periodical

Scientific Reports

Year of study

9

Number

1

State

United Kingdom of Great Britain and Northern Ireland

Pages from

1

Pages to

10

Pages count

10

URL

https://www.nature.com/articles/s41598-019-44900-1

Full text in the Digital Library

http://hdl.handle.net/11012/180467

BibTex

@article{BUT157470,
  author="Milena {Šetka} and Raul {Calavia} and Lukáš {Vojkůvka} and Eduard {Llobet} and Jana {Drbohlavová} and Stella {Vallejos Vargas}",
  title="Raman and XPS studies of ammonia sensitive polypyrrole nanorods and nanoparticles",
  journal="Scientific Reports",
  year="2019",
  volume="9",
  number="1",
  pages="1--10",
  doi="10.1038/s41598-019-449000-1",
  issn="2045-2322",
  url="https://www.nature.com/articles/s41598-019-44900-1"
}