Highly Sensitive Ammonia Sensor Based on Modified Nanostructured Polypyrrole Decorated with MAF-6 to Reduce the Effect of Humidity

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60461373%3A22310%2F23%3A43928122" target="_blank" >RIV/60461373:22310/23:43928122 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/49777513:23220/23:43968175 RIV/44555601:13440/23:43897697

Výsledek na webu

<a href="https://ieeexplore.ieee.org/document/9996394" target="_blank" >https://ieeexplore.ieee.org/document/9996394</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1109/JSEN.2022.3229835" target="_blank" >10.1109/JSEN.2022.3229835</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Highly Sensitive Ammonia Sensor Based on Modified Nanostructured Polypyrrole Decorated with MAF-6 to Reduce the Effect of Humidity

Popis výsledku v původním jazyce

An ammonia gas sensor based on nanostructured polypyrrole functionalized by carboxylic groups (PPy-COOH) was prepared and characterized. The active layer was deposited on a ceramic substrate with gold interdigital electrodes by a low-cost airbrush-spray coating technique, and the sensor exhibited a strong response to ammonia ( {Z}/{Z}{{0}},,= 5.48 at 100 ppm) in comparison with pure PPy ( {Z}/{Z}{{0}},,= 1.5 at 100 ppm). Cross-sensitivity measurement showed a more significant response to relative humidity (RH) and so two approaches were used to reduce this undesirable humidity dependence: 1) the creation of a hydrophobic metal-organic framework (so-called MAF-6) on the PPy-COOH layer and 2) the fabrication of a heterostructure of PPy-COOH with multiwall carbon nanotubes (MWCNTs). Both approaches resulted in a significant reduction in the humidity dependence of the sensor, from the value {Z}/{Z}{{0}},,= 0.02 (PPy-COOH) to 0.404 and 0.427 for PPy-COOH-MAF-6 and PPy-COOH/MWCNT, respectively. However, the samples coated with MAF-6 showed a smaller decrease in response to ammonia. In addition, the proposed approach with MAF-6 functionalization allowed ammonia detection within a broader RH range (up to 60% RH) compared to the PPy-COOH sensing layer. The presence of MAF-6 on the surface of PPy-COOH was further verified by infrared spectroscopy (FTIR), X-ray diffraction (XRD) spectroscopy, and scanning electron microscopy together with energy-dispersive X-ray spectroscopy (SEM-EDX). The sensing mechanisms of ammonia and RH of the PPy-COOH material are also discussed in this article. © 2001-2012 IEEE.

Název v anglickém jazyce

Highly Sensitive Ammonia Sensor Based on Modified Nanostructured Polypyrrole Decorated with MAF-6 to Reduce the Effect of Humidity

Popis výsledku anglicky

An ammonia gas sensor based on nanostructured polypyrrole functionalized by carboxylic groups (PPy-COOH) was prepared and characterized. The active layer was deposited on a ceramic substrate with gold interdigital electrodes by a low-cost airbrush-spray coating technique, and the sensor exhibited a strong response to ammonia ( {Z}/{Z}{{0}},,= 5.48 at 100 ppm) in comparison with pure PPy ( {Z}/{Z}{{0}},,= 1.5 at 100 ppm). Cross-sensitivity measurement showed a more significant response to relative humidity (RH) and so two approaches were used to reduce this undesirable humidity dependence: 1) the creation of a hydrophobic metal-organic framework (so-called MAF-6) on the PPy-COOH layer and 2) the fabrication of a heterostructure of PPy-COOH with multiwall carbon nanotubes (MWCNTs). Both approaches resulted in a significant reduction in the humidity dependence of the sensor, from the value {Z}/{Z}{{0}},,= 0.02 (PPy-COOH) to 0.404 and 0.427 for PPy-COOH-MAF-6 and PPy-COOH/MWCNT, respectively. However, the samples coated with MAF-6 showed a smaller decrease in response to ammonia. In addition, the proposed approach with MAF-6 functionalization allowed ammonia detection within a broader RH range (up to 60% RH) compared to the PPy-COOH sensing layer. The presence of MAF-6 on the surface of PPy-COOH was further verified by infrared spectroscopy (FTIR), X-ray diffraction (XRD) spectroscopy, and scanning electron microscopy together with energy-dispersive X-ray spectroscopy (SEM-EDX). The sensing mechanisms of ammonia and RH of the PPy-COOH material are also discussed in this article. © 2001-2012 IEEE.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

20501 - Materials engineering

Projekt

Výsledek vznikl pri realizaci vícero projektů. Více informací v záložce Projekty.

Návaznosti

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

Rok uplatnění

2023

Kód důvěrnosti údajů

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

Název periodika

IEEE SENSORS JOURNAL

ISSN

1530-437X

e-ISSN

—

Svazek periodika

23

Číslo periodika v rámci svazku

3

Stát vydavatele periodika

US - Spojené státy americké

Počet stran výsledku

12

Strana od-do

1896-1907

Kód UT WoS článku

000966551700001

EID výsledku v databázi Scopus

2-s2.0-85146235533