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

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216305%3A26620%2F20%3APU136863" target="_blank" >RIV/00216305:26620/20:PU136863 - isvavai.cz</a>

Result on the web

<a href="https://www.sciencedirect.com/science/article/pii/S0925400520309199" target="_blank" >https://www.sciencedirect.com/science/article/pii/S0925400520309199</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.snb.2020.128573" target="_blank" >10.1016/j.snb.2020.128573</a>

Result language

angličtina

Original language name

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

Original language description

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 det

Czech name

—

Czech description

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Type

J_imp - Article in a specialist periodical, which is included in the Web of Science database

CEP classification

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OECD FORD branch

21001 - Nano-materials (production and properties)

Project

Result was created during the realization of more than one project. More information in the Projects tab.

Continuities

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year

2020

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

Sensors and Actuators B: Chemical

ISSN

0925-4005

e-ISSN

—

Volume of the periodical

321

Issue of the periodical within the volume

1

Country of publishing house

CH - SWITZERLAND

Number of pages

9

Pages from-to

1-9

UT code for WoS article

000562373900003

EID of the result in the Scopus database

2-s2.0-85087777429