Detail publikace

Cadmium telluride/polypyrrole nanocomposite based Love wave sensors highly sensitive to acetone at room temperature

ŠETKA, M. BAHOS, F. CHMELA, O. MATATAGUI, D. GRÁCIA, I. DRBOHLAVOVÁ, J. VALLEJOS VARGAS, S.

Originální název

Cadmium telluride/polypyrrole nanocomposite based Love wave sensors highly sensitive to acetone at room temperature

Typ

článek v časopise ve Web of Science, Jimp

Jazyk

angličtina

Originální abstrakt

Cadmium telluride/polypyrrole (CdTe/PPy) nanocomposites are synthesized and integrated into Love mode surface acoustic wave (L SAW) sensors, achieving high sensitivity to various volatile organic compounds including acetone, ethanol, and toluene. Chemical/physical analysis of the composites and their integration as second/guiding sensitive layer into the L SAW structure show no evidence of strong chemical interaction among the structural components based on CdTe quantum dots and PPy nanoparticles. The gas sensing tests are focus on the performance of L SAW sensors consisting of CdTe/PPy (1:10), CdTe/PPy (1:2), and non-modified PPy layers. Results reveal that the L SAW sensors containing CdTe/PPy (1:10) composite improve the sensing performances to acetone showing a sensitivity of 771 Hz/ppm, an estimated limit of detection (LOD) of 5 ppb, and low interference to ethanol and toluene, compared to the sensors with CdTe/PPy (1:2) or without CdTe modification. The high sensitivity of the L SAW sensors to acetone is connected with the adsorption of acetone at PPy via dipole-dipole interaction and the incorporation of CdTe in the guiding/sensitive L SAW layers.Cadmium telluride/polypyrrole (CdTe/PPy) nanocomposites are synthesized and integrated into Love mode surface acoustic wave (L SAW) sensors, achieving high sensitivity to various volatile organic compounds including acetone, ethanol, and toluene. Chemical/physical analysis of the composites and their integration as second/guiding sensitive layer into the L SAW structure show no evidence of strong chemical interaction among the structural components based on CdTe quantum dots and PPy nanoparticles. The gas sensing tests are focus on the performance of L SAW sensors consisting of CdTe/PPy (1:10), CdTe/PPy (1:2), and non-modified PPy layers. Results reveal that the L SAW sensors containing CdTe/PPy (1:10) composite improve the sensing performances to acetone showing a sensitivity of 771 Hz/ppm, an estimated limit of detection (LOD) of 5 ppb, and low interference to ethanol and toluene, compared to the sensors with CdTe/PPy (1:2) or without CdTe modification. The high sensitivity of the L SAW sensors to acetone is connected with the adsorption of acetone at PPy via dipole-dipole interaction and the incorporation of CdTe in the guiding/sensitive L SAW layers.

Klíčová slova

Polypyrrole Quantum dots Composite Surface acoustic wave Gas sensors

Autoři

ŠETKA, M.; BAHOS, F.; CHMELA, O.; MATATAGUI, D.; GRÁCIA, I.; DRBOHLAVOVÁ, J.; VALLEJOS VARGAS, S.

Vydáno

15. 10. 2020

Nakladatel

Elsevier

ISSN

0925-4005

Periodikum

Sensors and Actuators B: Chemical

Ročník

321

Číslo

1

Stát

Švýcarská konfederace

Strany od

1

Strany do

9

Strany počet

9

URL

https://www.sciencedirect.com/science/article/pii/S0925400520309199

BibTex

@article{BUT164545,
  author="Milena {Šetka} and Fabio {Bahos} and Ondřej {Chmela} and Daniel {Matatagui} and Isabel {Grácia} and Jana {Drbohlavová} and Stella {Vallejos Vargas}",
  title="Cadmium telluride/polypyrrole nanocomposite based Love wave sensors highly sensitive to acetone at room temperature",
  journal="Sensors and Actuators B: Chemical",
  year="2020",
  volume="321",
  number="1",
  pages="1--9",
  doi="10.1016/j.snb.2020.128573",
  issn="0925-4005",
  url="https://www.sciencedirect.com/science/article/pii/S0925400520309199"
}