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Flexible and Reusable Ag Coated TiO(2) Nanotube Arrays for Highly Sensitive SERS Detection of Formaldehyde

Quantitative analysis of formaldehyde (HCHO, FA), especially at low levels, in various environmental media is of great importance for assessing related environmental and human health risks. A highly efficient and convenient FA detection method based on surface-enhanced Raman spectroscopy (SERS) tech...

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Autores principales: Zhu, Tong, Wang, Hang, Zang, Libin, Jin, Sila, Guo, Shuang, Park, Eungyeong, Mao, Zhu, Jung, Young Mee
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2020
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7179449/
https://www.ncbi.nlm.nih.gov/pubmed/32155919
http://dx.doi.org/10.3390/molecules25051199
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author Zhu, Tong
Wang, Hang
Zang, Libin
Jin, Sila
Guo, Shuang
Park, Eungyeong
Mao, Zhu
Jung, Young Mee
author_facet Zhu, Tong
Wang, Hang
Zang, Libin
Jin, Sila
Guo, Shuang
Park, Eungyeong
Mao, Zhu
Jung, Young Mee
author_sort Zhu, Tong
collection PubMed
description Quantitative analysis of formaldehyde (HCHO, FA), especially at low levels, in various environmental media is of great importance for assessing related environmental and human health risks. A highly efficient and convenient FA detection method based on surface-enhanced Raman spectroscopy (SERS) technology has been developed. This SERS-based method employs a reusable and soft silver-coated TiO(2) nanotube array (TNA) material, such as an SERS substrate, which can be used as both a sensing platform and a degradation platform. The Ag-coated TNA exhibits superior detection sensitivity with high reproducibility and stability compared with other SERS substrates. The detection of FA is achieved using the well-known redox reaction of FA with 4-amino-3-hydrazino-5-mercapto-1,2,4-triazole (AHMT) at room temperature. The limit of detection (LOD) for FA is 1.21 × 10(−7) M. In addition, the stable catalytic performance of the array allows the degradation and cleaning of the AHMT-FA products adsorbed on the array surface under ultraviolet irradiation, making this material recyclable. This SERS platform displays a real-time monitoring platform that combines the detection and degradation of FA.
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spelling pubmed-71794492020-05-05 Flexible and Reusable Ag Coated TiO(2) Nanotube Arrays for Highly Sensitive SERS Detection of Formaldehyde Zhu, Tong Wang, Hang Zang, Libin Jin, Sila Guo, Shuang Park, Eungyeong Mao, Zhu Jung, Young Mee Molecules Article Quantitative analysis of formaldehyde (HCHO, FA), especially at low levels, in various environmental media is of great importance for assessing related environmental and human health risks. A highly efficient and convenient FA detection method based on surface-enhanced Raman spectroscopy (SERS) technology has been developed. This SERS-based method employs a reusable and soft silver-coated TiO(2) nanotube array (TNA) material, such as an SERS substrate, which can be used as both a sensing platform and a degradation platform. The Ag-coated TNA exhibits superior detection sensitivity with high reproducibility and stability compared with other SERS substrates. The detection of FA is achieved using the well-known redox reaction of FA with 4-amino-3-hydrazino-5-mercapto-1,2,4-triazole (AHMT) at room temperature. The limit of detection (LOD) for FA is 1.21 × 10(−7) M. In addition, the stable catalytic performance of the array allows the degradation and cleaning of the AHMT-FA products adsorbed on the array surface under ultraviolet irradiation, making this material recyclable. This SERS platform displays a real-time monitoring platform that combines the detection and degradation of FA. MDPI 2020-03-06 /pmc/articles/PMC7179449/ /pubmed/32155919 http://dx.doi.org/10.3390/molecules25051199 Text en © 2020 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Zhu, Tong
Wang, Hang
Zang, Libin
Jin, Sila
Guo, Shuang
Park, Eungyeong
Mao, Zhu
Jung, Young Mee
Flexible and Reusable Ag Coated TiO(2) Nanotube Arrays for Highly Sensitive SERS Detection of Formaldehyde
title Flexible and Reusable Ag Coated TiO(2) Nanotube Arrays for Highly Sensitive SERS Detection of Formaldehyde
title_full Flexible and Reusable Ag Coated TiO(2) Nanotube Arrays for Highly Sensitive SERS Detection of Formaldehyde
title_fullStr Flexible and Reusable Ag Coated TiO(2) Nanotube Arrays for Highly Sensitive SERS Detection of Formaldehyde
title_full_unstemmed Flexible and Reusable Ag Coated TiO(2) Nanotube Arrays for Highly Sensitive SERS Detection of Formaldehyde
title_short Flexible and Reusable Ag Coated TiO(2) Nanotube Arrays for Highly Sensitive SERS Detection of Formaldehyde
title_sort flexible and reusable ag coated tio(2) nanotube arrays for highly sensitive sers detection of formaldehyde
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7179449/
https://www.ncbi.nlm.nih.gov/pubmed/32155919
http://dx.doi.org/10.3390/molecules25051199
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