Cu2O Nanowire Chemiresistors for Detection of Organophosphorus CWA Simulants

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60461373%3A22340%2F25%3A43933244" target="_blank" >RIV/60461373:22340/25:43933244 - isvavai.cz</a>

Výsledek na webu

<a href="https://www.mdpi.com/2079-9292/14/17/3478" target="_blank" >https://www.mdpi.com/2079-9292/14/17/3478</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.3390/electronics14173478" target="_blank" >10.3390/electronics14173478</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Cu2O Nanowire Chemiresistors for Detection of Organophosphorus CWA Simulants

Popis výsledku v původním jazyce

Rapid on-site detection of chemical warfare agents (CWAs) is vital for security and environmental monitoring. In this work, copper(I) oxide (Cu&lt;inf&gt;2&lt;/inf&gt;O) nanowire (NW) chemiresistors were investigated as gas sensors for low-concentration organophosphorus chemical warfare agent (CWA) simulants. The NWs were hydrothermally synthesized and deposited onto microheater platforms, enabling them to operate at elevated working temperatures. Their sensing performance was tested against a range of vapor-phase simulants, including dimethyl methylphosphonate (DMMP), triethyl phosphate (TEP), diethyl ethylphosphonate (DEEP), diphenyl phosphoryl chloride (DPPCl), parathion, diethyl phosphite (DEP), diethyl adipate (DEA), and cyanogen chloride (ClCN). Fully oxidized P(V) simulants (DMMP, DEEP, TEP) produced modest, predominantly reversible responses (~3–6% RR). On the contrary, DPPCl and DEP induced the strongest relative responses (RR −94.67% and &gt;200%, respectively), accompanied by irreversible surface modification as revealed by SEM and EDS. ClCN produced a substantial but reversible negative response (RR −9.5%), consistent with transient oxidative interactions. Surface poisoning was confirmed after exposure to DEP and DPPCl, which left phosphorus or chlorine residues on the Cu&lt;inf&gt;2&lt;/inf&gt;O surface. These results highlight both the promise and limitations of Cu&lt;inf&gt;2&lt;/inf&gt;O NW chemiresistors for selective CWA detection. © 2025 by the authors.

Název v anglickém jazyce

Cu2O Nanowire Chemiresistors for Detection of Organophosphorus CWA Simulants

Popis výsledku anglicky

Rapid on-site detection of chemical warfare agents (CWAs) is vital for security and environmental monitoring. In this work, copper(I) oxide (Cu&lt;inf&gt;2&lt;/inf&gt;O) nanowire (NW) chemiresistors were investigated as gas sensors for low-concentration organophosphorus chemical warfare agent (CWA) simulants. The NWs were hydrothermally synthesized and deposited onto microheater platforms, enabling them to operate at elevated working temperatures. Their sensing performance was tested against a range of vapor-phase simulants, including dimethyl methylphosphonate (DMMP), triethyl phosphate (TEP), diethyl ethylphosphonate (DEEP), diphenyl phosphoryl chloride (DPPCl), parathion, diethyl phosphite (DEP), diethyl adipate (DEA), and cyanogen chloride (ClCN). Fully oxidized P(V) simulants (DMMP, DEEP, TEP) produced modest, predominantly reversible responses (~3–6% RR). On the contrary, DPPCl and DEP induced the strongest relative responses (RR −94.67% and &gt;200%, respectively), accompanied by irreversible surface modification as revealed by SEM and EDS. ClCN produced a substantial but reversible negative response (RR −9.5%), consistent with transient oxidative interactions. Surface poisoning was confirmed after exposure to DEP and DPPCl, which left phosphorus or chlorine residues on the Cu&lt;inf&gt;2&lt;/inf&gt;O surface. These results highlight both the promise and limitations of Cu&lt;inf&gt;2&lt;/inf&gt;O NW chemiresistors for selective CWA detection. © 2025 by the authors.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10200 - Computer and information sciences

Projekt

<a href="/cs/project/EH22_008%2F0004596" target="_blank" >EH22_008/0004596: Senzory a detektory pro informační společnost budoucnosti</a><br>

Návaznosti

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

Rok uplatnění

2025

Kód důvěrnosti údajů

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

Název periodika

Electronics

ISSN

2079-9292

e-ISSN

2079-9292

Svazek periodika

14

Číslo periodika v rámci svazku

17

Stát vydavatele periodika

CH - Švýcarská konfederace

Počet stran výsledku

17

Strana od-do

3478

Kód UT WoS článku

001571300900001

EID výsledku v databázi Scopus

2-s2.0-105015668322