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Registro Completo |
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Biblioteca(s): |
Embrapa Instrumentação. |
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Data corrente: |
27/09/2022 |
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Data da última atualização: |
25/11/2022 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
CONTI, P. P.; SANTOS, D. M. dos; GOLDTHORPE, I. A.; CORREA, D. S. |
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Afiliação: |
DANIEL SOUZA CORREA, CNPDIA. |
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Título: |
TiO2 hollow nanofiber/polyaniline nanocomposites for ammonia detection at room temperature. |
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Ano de publicação: |
2022 |
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Fonte/Imprenta: |
Chemistry of Nanomaterials for Energy, Biology and More, v. 8, n. 8, e202200154, 2022. |
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Páginas: |
1 - 9 |
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ISSN: |
2199-692X |
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DOI: |
doi.org/10.1002/cnma.202200154 |
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Idioma: |
Inglês |
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Conteúdo: |
Ammonia (NH3) detection has gained considerable attention in agricultural and environmental monitoring, chemical and pharmaceutical processing, and disease diagnosis, which requires the development of sensors with high sensitivity. Herein, we propose a novel gas sensor based on nanocomposites of TiO2 hollow nanofibers and polyaniline (PANI) for the sensitive detection of ammonia at room temperature. TiO2 nanostructures in anatase phase were prepared by the combination of coaxial electrospinning and calcination treatment. The resulting material was mixed with PANI and deposited onto gold interdigitated electrodes (IDEs). The hybrid platforms exhibited superior sensing performance compared to the platform based on their individual phases, which is ascribed to a synergistic effect from p-n heterojunction formation. Specifically, the platforms based on TiO2/PANI nanocomposite showed a fast response towards NH3 (e.g., 55 s at 10 ppm) at room temperature (25°C). Additionally, the platform demonstrated the ability to detect NH3 at low concentrations (10?30 ppm) and a detection mechanism was proposed to explain the results. Overall, these results show the promise of electrospun TiO2 hollow nanofibers/PANI composites for the development of high-performance room temperature ammonia sensors |
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Palavras-Chave: |
Chemiresistive sensors; Gas pollutants; Toxic gas. |
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Categoria do assunto: |
-- |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/doc/1146890/1/P-TiO2-Hollow-Nanofiber-Polyaniline-Nanocomposites-for-Ammonia.pdf
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Marc: |
LEADER 02018naa a2200229 a 4500
001 2146890
005 2022-11-25
008 2022 bl uuuu u00u1 u #d
022 $a2199-692X
024 7 $adoi.org/10.1002/cnma.202200154$2DOI
100 1 $aCONTI, P. P.
245 $aTiO2 hollow nanofiber/polyaniline nanocomposites for ammonia detection at room temperature.$h[electronic resource]
260 $c2022
300 $a1 - 9
520 $aAmmonia (NH3) detection has gained considerable attention in agricultural and environmental monitoring, chemical and pharmaceutical processing, and disease diagnosis, which requires the development of sensors with high sensitivity. Herein, we propose a novel gas sensor based on nanocomposites of TiO2 hollow nanofibers and polyaniline (PANI) for the sensitive detection of ammonia at room temperature. TiO2 nanostructures in anatase phase were prepared by the combination of coaxial electrospinning and calcination treatment. The resulting material was mixed with PANI and deposited onto gold interdigitated electrodes (IDEs). The hybrid platforms exhibited superior sensing performance compared to the platform based on their individual phases, which is ascribed to a synergistic effect from p-n heterojunction formation. Specifically, the platforms based on TiO2/PANI nanocomposite showed a fast response towards NH3 (e.g., 55 s at 10 ppm) at room temperature (25°C). Additionally, the platform demonstrated the ability to detect NH3 at low concentrations (10?30 ppm) and a detection mechanism was proposed to explain the results. Overall, these results show the promise of electrospun TiO2 hollow nanofibers/PANI composites for the development of high-performance room temperature ammonia sensors
653 $aChemiresistive sensors
653 $aGas pollutants
653 $aToxic gas
700 1 $aSANTOS, D. M. dos
700 1 $aGOLDTHORPE, I. A.
700 1 $aCORREA, D. S.
773 $tChemistry of Nanomaterials for Energy, Biology and More$gv. 8, n. 8, e202200154, 2022.
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Embrapa Instrumentação (CNPDIA) |
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