Highly Sensitive Ammonia Gas Sensor Based on MWCNTs Saturated Fe2O3Nanograins
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60461373%3A22340%2F25%3A43932965" target="_blank" >RIV/60461373:22340/25:43932965 - isvavai.cz</a>
Result on the web
<a href="https://pubs.acs.org/doi/10.1021/acs.langmuir.5c02458?ref=PDF" target="_blank" >https://pubs.acs.org/doi/10.1021/acs.langmuir.5c02458?ref=PDF</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1021/acs.langmuir.5c02458" target="_blank" >10.1021/acs.langmuir.5c02458</a>
Alternative languages
Result language
angličtina
Original language name
Highly Sensitive Ammonia Gas Sensor Based on MWCNTs Saturated Fe2O3Nanograins
Original language description
Ammonia has a wide range of applications in various branches of industry and technology; the detection of its low concentrations is a preventive method for ambient air quality pollution and a useful method for noninvasive diagnosis of kidney disease by monitoring in exhaled human breath. In this work, a high-performance ammonia sensor based on the Fe<inf>2</inf>O<inf>3</inf>/MWCNTs (multiwalled carbon nanotubes) material was produced by applying the e-beam deposition method. The morphology, composition, and chemical state of the Fe<inf>2</inf>O<inf>3</inf>/MWCNTs material were characterized by scanning electron microscopy (SEM), transmission electron microscopy (TEM), energy-dispersive X-ray spectroscopy (EDX), Raman spectroscopy (Raman), Fourier transform infrared (FTIR) spectroscopy, and X-ray photoelectron spectroscopy (XPS). The gas-sensing behavior of the sensor to various concentrations of NH<inf>3</inf>was measured at 200 °C, representing excellent gas response and sophisticated performance parameters. The low detection limit of the Fe<inf>2</inf>O<inf>3</inf>/MWCNTs sensor was 3 ppm of NH<inf>3</inf>, corresponding to the response value of 2.7. The promising values of the response and recovery times (40 and 25 s) confirmed the high speed of ammonia detection. Thus, the suggested Fe<inf>2</inf>O<inf>3</inf>/MWCNTs material that is sensitive to low concentrations of NH<inf>3</inf>can be successfully used in a new generation of ammonia alarm systems. © 2025 The Authors. Published by American Chemical Society
Czech name
—
Czech description
—
Classification
Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
—
OECD FORD branch
10403 - Physical chemistry
Result continuities
Project
—
Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace
Others
Publication year
2025
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
LANGMUIR
ISSN
0743-7463
e-ISSN
1520-5827
Volume of the periodical
41
Issue of the periodical within the volume
39
Country of publishing house
US - UNITED STATES
Number of pages
14
Pages from-to
26614-26627
UT code for WoS article
001582734100001
EID of the result in the Scopus database
2-s2.0-105017975271