All

What are you looking for?

All
Projects
Results
Organizations

Quick search

  • Projects supported by TA ČR
  • Excellent projects
  • Projects with the highest public support
  • Current projects

Smart search

  • That is how I find a specific +word
  • That is how I leave the -word out of the results
  • “That is how I can find the whole phrase”

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

The result's identifiers

  • Result code in 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>

  • Alternative codes found

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

  • Result on the web

    <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>

Alternative languages

  • Result language

    angličtina

  • Original language name

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

  • Original language description

    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.

  • 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

    20501 - Materials engineering

Result continuities

  • 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)

Others

  • Publication year

    2023

  • Confidentiality

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

Data specific for result type

  • Name of the periodical

    IEEE SENSORS JOURNAL

  • ISSN

    1530-437X

  • e-ISSN

  • Volume of the periodical

    23

  • Issue of the periodical within the volume

    3

  • Country of publishing house

    US - UNITED STATES

  • Number of pages

    12

  • Pages from-to

    1896-1907

  • UT code for WoS article

    000966551700001

  • EID of the result in the Scopus database

    2-s2.0-85146235533