TiO2 hollow nanofiber/polyaniline nanocomposites for ammonia detection at room temperature.
Autor(a) principal: | |
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Data de Publicação: | 2022 |
Outros Autores: | , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Institucional da EMBRAPA (Repository Open Access to Scientific Information from EMBRAPA - Alice) |
Texto Completo: | http://www.alice.cnptia.embrapa.br/alice/handle/doc/1146890 |
Resumo: | 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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TiO2 hollow nanofiber/polyaniline nanocomposites for ammonia detection at room temperature.Gas pollutantsChemiresistive sensorsToxic gasAmmonia (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 sensorsDANIEL SOUZA CORREA, CNPDIA.CONTI, P. P.SANTOS, D. M. dosGOLDTHORPE, I. A.CORREA, D. S.2022-09-27T21:06:12Z2022-09-27T21:06:12Z2022-09-272022info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/article1 - 9Chemistry of Nanomaterials for Energy, Biology and More, v. 8, n. 8, e202200154, 2022.2199-692Xhttp://www.alice.cnptia.embrapa.br/alice/handle/doc/1146890doi.org/10.1002/cnma.202200154enginfo:eu-repo/semantics/openAccessreponame:Repositório Institucional da EMBRAPA (Repository Open Access to Scientific Information from EMBRAPA - Alice)instname:Empresa Brasileira de Pesquisa Agropecuária (Embrapa)instacron:EMBRAPA2022-09-27T21:06:22Zoai:www.alice.cnptia.embrapa.br:doc/1146890Repositório InstitucionalPUBhttps://www.alice.cnptia.embrapa.br/oai/requestopendoar:21542022-09-27T21:06:22falseRepositório InstitucionalPUBhttps://www.alice.cnptia.embrapa.br/oai/requestcg-riaa@embrapa.bropendoar:21542022-09-27T21:06:22Repositório Institucional da EMBRAPA (Repository Open Access to Scientific Information from EMBRAPA - Alice) - Empresa Brasileira de Pesquisa Agropecuária (Embrapa)false |
dc.title.none.fl_str_mv |
TiO2 hollow nanofiber/polyaniline nanocomposites for ammonia detection at room temperature. |
title |
TiO2 hollow nanofiber/polyaniline nanocomposites for ammonia detection at room temperature. |
spellingShingle |
TiO2 hollow nanofiber/polyaniline nanocomposites for ammonia detection at room temperature. CONTI, P. P. Gas pollutants Chemiresistive sensors Toxic gas |
title_short |
TiO2 hollow nanofiber/polyaniline nanocomposites for ammonia detection at room temperature. |
title_full |
TiO2 hollow nanofiber/polyaniline nanocomposites for ammonia detection at room temperature. |
title_fullStr |
TiO2 hollow nanofiber/polyaniline nanocomposites for ammonia detection at room temperature. |
title_full_unstemmed |
TiO2 hollow nanofiber/polyaniline nanocomposites for ammonia detection at room temperature. |
title_sort |
TiO2 hollow nanofiber/polyaniline nanocomposites for ammonia detection at room temperature. |
author |
CONTI, P. P. |
author_facet |
CONTI, P. P. SANTOS, D. M. dos GOLDTHORPE, I. A. CORREA, D. S. |
author_role |
author |
author2 |
SANTOS, D. M. dos GOLDTHORPE, I. A. CORREA, D. S. |
author2_role |
author author author |
dc.contributor.none.fl_str_mv |
DANIEL SOUZA CORREA, CNPDIA. |
dc.contributor.author.fl_str_mv |
CONTI, P. P. SANTOS, D. M. dos GOLDTHORPE, I. A. CORREA, D. S. |
dc.subject.por.fl_str_mv |
Gas pollutants Chemiresistive sensors Toxic gas |
topic |
Gas pollutants Chemiresistive sensors Toxic gas |
description |
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 |
publishDate |
2022 |
dc.date.none.fl_str_mv |
2022-09-27T21:06:12Z 2022-09-27T21:06:12Z 2022-09-27 2022 |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/publishedVersion info:eu-repo/semantics/article |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
Chemistry of Nanomaterials for Energy, Biology and More, v. 8, n. 8, e202200154, 2022. 2199-692X http://www.alice.cnptia.embrapa.br/alice/handle/doc/1146890 doi.org/10.1002/cnma.202200154 |
identifier_str_mv |
Chemistry of Nanomaterials for Energy, Biology and More, v. 8, n. 8, e202200154, 2022. 2199-692X doi.org/10.1002/cnma.202200154 |
url |
http://www.alice.cnptia.embrapa.br/alice/handle/doc/1146890 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
1 - 9 |
dc.source.none.fl_str_mv |
reponame:Repositório Institucional da EMBRAPA (Repository Open Access to Scientific Information from EMBRAPA - Alice) instname:Empresa Brasileira de Pesquisa Agropecuária (Embrapa) instacron:EMBRAPA |
instname_str |
Empresa Brasileira de Pesquisa Agropecuária (Embrapa) |
instacron_str |
EMBRAPA |
institution |
EMBRAPA |
reponame_str |
Repositório Institucional da EMBRAPA (Repository Open Access to Scientific Information from EMBRAPA - Alice) |
collection |
Repositório Institucional da EMBRAPA (Repository Open Access to Scientific Information from EMBRAPA - Alice) |
repository.name.fl_str_mv |
Repositório Institucional da EMBRAPA (Repository Open Access to Scientific Information from EMBRAPA - Alice) - Empresa Brasileira de Pesquisa Agropecuária (Embrapa) |
repository.mail.fl_str_mv |
cg-riaa@embrapa.br |
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1794503531873435648 |