Sulfur-Doped Nanostructured Copper Iodide Films for Chemiresistive Ammonia Sensors Analyzing Exhaled Breath

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F46747885%3A24620%2F25%3A00013486" target="_blank" >RIV/46747885:24620/25:00013486 - isvavai.cz</a>

Výsledek na webu

<a href="https://onlinelibrary.wiley.com/doi/10.1002/pssa.202400966" target="_blank" >https://onlinelibrary.wiley.com/doi/10.1002/pssa.202400966</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1002/pssa.202400966" target="_blank" >10.1002/pssa.202400966</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Sulfur-Doped Nanostructured Copper Iodide Films for Chemiresistive Ammonia Sensors Analyzing Exhaled Breath

Popis výsledku v původním jazyce

Chemiresistive room-temperature sensors based on sulfur-doped copper iodide films have been developed and tested, which are suitable for the selective detection of ammonia (NH 3 ) in exhaled air for the purpose of disease diagnosis and monitoring. The films are deposited on glass and flexible polyethylene substrates and have a morphology of nanoflakes or triangular nanograins containing from 2 to 8 at% S depending on the mode of the automatic successive ionic layer adsorption and reaction method. The interfering effect of water vapor, acetone, and ethanol on the response of the ammonia sensors is insignificant due to the specific chemical interaction of copper iodide with ammonia. The high conductivity of the films allows the sensors to produce significant signals above noise-limited detection levels even at sub-ppm NH 3 concentrations. The detection limit of the developed sensors ≈0.15 ppm NH 3 is two times lower than the typical level of ammonia in the exhaled breath of a healthy person. The ammonia responses and response/recovery times are among the best chemiresistive sensors operating at room temperature. Using a low 1 V bias voltage for room temperature operation allows the sensors to be integrated with smartphones, giving them autonomy

Název v anglickém jazyce

Sulfur-Doped Nanostructured Copper Iodide Films for Chemiresistive Ammonia Sensors Analyzing Exhaled Breath

Popis výsledku anglicky

Chemiresistive room-temperature sensors based on sulfur-doped copper iodide films have been developed and tested, which are suitable for the selective detection of ammonia (NH 3 ) in exhaled air for the purpose of disease diagnosis and monitoring. The films are deposited on glass and flexible polyethylene substrates and have a morphology of nanoflakes or triangular nanograins containing from 2 to 8 at% S depending on the mode of the automatic successive ionic layer adsorption and reaction method. The interfering effect of water vapor, acetone, and ethanol on the response of the ammonia sensors is insignificant due to the specific chemical interaction of copper iodide with ammonia. The high conductivity of the films allows the sensors to produce significant signals above noise-limited detection levels even at sub-ppm NH 3 concentrations. The detection limit of the developed sensors ≈0.15 ppm NH 3 is two times lower than the typical level of ammonia in the exhaled breath of a healthy person. The ammonia responses and response/recovery times are among the best chemiresistive sensors operating at room temperature. Using a low 1 V bias voltage for room temperature operation allows the sensors to be integrated with smartphones, giving them autonomy

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

20500 - Materials engineering

Projekt

—

Návaznosti

V - Vyzkumna aktivita podporovana z jinych verejnych zdroju

Rok uplatnění

2025

Kód důvěrnosti údajů

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

Název periodika

Physica Status Solidi (a)>

ISSN

1862-6300

e-ISSN

—

Svazek periodika

222

Číslo periodika v rámci svazku

19

Stát vydavatele periodika

DE - Spolková republika Německo

Počet stran výsledku

19

Strana od-do

—

Kód UT WoS článku

001463446600001

EID výsledku v databázi Scopus

2-s2.0-105002254115