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Non-contact real-time detection of trace nitro-explosives by MOF composites visible-light chemiresistor

To create an artificial structure to remarkably surpass the sensitivity, selectivity and speed of the olfaction system of animals is still a daunting challenge. Herein, we propose a core-sheath pillar (CSP) architecture with a perfect synergistic interface that effectively integrates the advantages...

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Autores principales: Deng, Wei-Hua, Yao, Ming-Shui, Zhang, Min-Yi, Tsujimoto, Masahiko, Otake, Kenichi, Wang, Bo, Li, Chun-Sen, Xu, Gang, Kitagawa, Susumu
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Oxford University Press 2022
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9522384/
https://www.ncbi.nlm.nih.gov/pubmed/36196111
http://dx.doi.org/10.1093/nsr/nwac143
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author Deng, Wei-Hua
Yao, Ming-Shui
Zhang, Min-Yi
Tsujimoto, Masahiko
Otake, Kenichi
Wang, Bo
Li, Chun-Sen
Xu, Gang
Kitagawa, Susumu
author_facet Deng, Wei-Hua
Yao, Ming-Shui
Zhang, Min-Yi
Tsujimoto, Masahiko
Otake, Kenichi
Wang, Bo
Li, Chun-Sen
Xu, Gang
Kitagawa, Susumu
author_sort Deng, Wei-Hua
collection PubMed
description To create an artificial structure to remarkably surpass the sensitivity, selectivity and speed of the olfaction system of animals is still a daunting challenge. Herein, we propose a core-sheath pillar (CSP) architecture with a perfect synergistic interface that effectively integrates the advantages of metal–organic frameworks and metal oxides to tackle the above-mentioned challenge. The sheath material, NH(2)-MIL-125, can concentrate target analyte, nitro-explosives, by 10(12) times from its vapour. The perfect band-matched synergistic interface enables the TiO(2) core to effectively harvest and utilize visible light. At room temperature and under visible light, CSP (TiO(2), NH(2)-MIL-125) shows an unexpected self-promoting analyte-sensing behaviour. Its experimentally reached limit of detection (∼0.8 ppq, hexogeon) is 10(3) times lower than the lowest one achieved by a sniffer dog or all sensing techniques without analyte pre-concentration. Moreover, the sensor exhibits excellent selectivity against commonly existing interferences, with a short response time of 0.14 min.
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spelling pubmed-95223842022-10-03 Non-contact real-time detection of trace nitro-explosives by MOF composites visible-light chemiresistor Deng, Wei-Hua Yao, Ming-Shui Zhang, Min-Yi Tsujimoto, Masahiko Otake, Kenichi Wang, Bo Li, Chun-Sen Xu, Gang Kitagawa, Susumu Natl Sci Rev Research Article To create an artificial structure to remarkably surpass the sensitivity, selectivity and speed of the olfaction system of animals is still a daunting challenge. Herein, we propose a core-sheath pillar (CSP) architecture with a perfect synergistic interface that effectively integrates the advantages of metal–organic frameworks and metal oxides to tackle the above-mentioned challenge. The sheath material, NH(2)-MIL-125, can concentrate target analyte, nitro-explosives, by 10(12) times from its vapour. The perfect band-matched synergistic interface enables the TiO(2) core to effectively harvest and utilize visible light. At room temperature and under visible light, CSP (TiO(2), NH(2)-MIL-125) shows an unexpected self-promoting analyte-sensing behaviour. Its experimentally reached limit of detection (∼0.8 ppq, hexogeon) is 10(3) times lower than the lowest one achieved by a sniffer dog or all sensing techniques without analyte pre-concentration. Moreover, the sensor exhibits excellent selectivity against commonly existing interferences, with a short response time of 0.14 min. Oxford University Press 2022-07-22 /pmc/articles/PMC9522384/ /pubmed/36196111 http://dx.doi.org/10.1093/nsr/nwac143 Text en © The Author(s) 2022. Published by Oxford University Press on behalf of China Science Publishing & Media Ltd. https://creativecommons.org/licenses/by/4.0/This is an Open Access article distributed under the terms of the Creative Commons Attribution License (https://creativecommons.org/licenses/by/4.0/), which permits unrestricted reuse, distribution, and reproduction in any medium, provided the original work is properly cited.
spellingShingle Research Article
Deng, Wei-Hua
Yao, Ming-Shui
Zhang, Min-Yi
Tsujimoto, Masahiko
Otake, Kenichi
Wang, Bo
Li, Chun-Sen
Xu, Gang
Kitagawa, Susumu
Non-contact real-time detection of trace nitro-explosives by MOF composites visible-light chemiresistor
title Non-contact real-time detection of trace nitro-explosives by MOF composites visible-light chemiresistor
title_full Non-contact real-time detection of trace nitro-explosives by MOF composites visible-light chemiresistor
title_fullStr Non-contact real-time detection of trace nitro-explosives by MOF composites visible-light chemiresistor
title_full_unstemmed Non-contact real-time detection of trace nitro-explosives by MOF composites visible-light chemiresistor
title_short Non-contact real-time detection of trace nitro-explosives by MOF composites visible-light chemiresistor
title_sort non-contact real-time detection of trace nitro-explosives by mof composites visible-light chemiresistor
topic Research Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9522384/
https://www.ncbi.nlm.nih.gov/pubmed/36196111
http://dx.doi.org/10.1093/nsr/nwac143
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