Paper Sensors Based on Fluorescence Changes of Carbon Nanodots for Optical Detection of Nanomaterials

A paper sensor was designed in order to detect the presence of nanomaterials, such as ZnO and silica nanoparticles, as well as graphene nanoplatelets (GnP), based on fluorescence changes of carbon nanodots. Paper strips were functionalized with carbon nanodots using polyvinyl alcohol (PVA) as binder...

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Autores principales:	Evie L. Papadopoulou, Giulia Biffi, Anitha Senthamizhan, Beatriz Martín-García, Riccardo Carzino, Roman Krahne, Athanassia Athanassiou
Formato:	article
Lenguaje:	EN
Publicado:	MDPI AG 2021
Materias:	carbon nanodots paper sensor optical sensor fluorescence sensor Environmental effects of industries and plants TD194-195 Renewable energy sources TJ807-830 Environmental sciences GE1-350
Acceso en línea:	https://doaj.org/article/78e4f2d878584992812027b9db6c8171
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spelling	oai:doaj.org-article:78e4f2d878584992812027b9db6c81712021-11-11T19:35:25ZPaper Sensors Based on Fluorescence Changes of Carbon Nanodots for Optical Detection of Nanomaterials10.3390/su1321118962071-1050https://doaj.org/article/78e4f2d878584992812027b9db6c81712021-10-01T00:00:00Zhttps://www.mdpi.com/2071-1050/13/21/11896https://doaj.org/toc/2071-1050A paper sensor was designed in order to detect the presence of nanomaterials, such as ZnO and silica nanoparticles, as well as graphene nanoplatelets (GnP), based on fluorescence changes of carbon nanodots. Paper strips were functionalized with carbon nanodots using polyvinyl alcohol (PVA) as binder. The carbon nanodots were highly fluorescent and, hence, rendered the (cellulosic) paper stripes emissive. In the presence of silica and ZnO nanoparticles, the fluorescence emission of the carbon nanodots was quenched and the emission decay was shortened, whereas in the presence of GnP only emission quenching occurred. These different photoluminescence (PL) quenching mechanisms, which are evident from lifetime measurements, convey selectivity to the sensor. The change in fluorescence of the carbon dot-functionalized paper is also evident to the naked eye under illumination with a UV lamp, which enables easy detection of the nanomaterials. The sensor was able to detect the nanomaterials upon direct contact, either by dipping it in their aqueous dispersions, or by sweeping it over their powders. The use of the proposed optical sensor permits the detection of nanomaterials in a straightforward manner, opening new ways for the development of optical sensors for practical applications.Evie L. PapadopoulouGiulia BiffiAnitha SenthamizhanBeatriz Martín-GarcíaRiccardo CarzinoRoman KrahneAthanassia AthanassiouMDPI AGarticlecarbon nanodotspaper sensoroptical sensorfluorescence sensorEnvironmental effects of industries and plantsTD194-195Renewable energy sourcesTJ807-830Environmental sciencesGE1-350ENSustainability, Vol 13, Iss 11896, p 11896 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	carbon nanodots paper sensor optical sensor fluorescence sensor Environmental effects of industries and plants TD194-195 Renewable energy sources TJ807-830 Environmental sciences GE1-350
spellingShingle	carbon nanodots paper sensor optical sensor fluorescence sensor Environmental effects of industries and plants TD194-195 Renewable energy sources TJ807-830 Environmental sciences GE1-350 Evie L. Papadopoulou Giulia Biffi Anitha Senthamizhan Beatriz Martín-García Riccardo Carzino Roman Krahne Athanassia Athanassiou Paper Sensors Based on Fluorescence Changes of Carbon Nanodots for Optical Detection of Nanomaterials
description	A paper sensor was designed in order to detect the presence of nanomaterials, such as ZnO and silica nanoparticles, as well as graphene nanoplatelets (GnP), based on fluorescence changes of carbon nanodots. Paper strips were functionalized with carbon nanodots using polyvinyl alcohol (PVA) as binder. The carbon nanodots were highly fluorescent and, hence, rendered the (cellulosic) paper stripes emissive. In the presence of silica and ZnO nanoparticles, the fluorescence emission of the carbon nanodots was quenched and the emission decay was shortened, whereas in the presence of GnP only emission quenching occurred. These different photoluminescence (PL) quenching mechanisms, which are evident from lifetime measurements, convey selectivity to the sensor. The change in fluorescence of the carbon dot-functionalized paper is also evident to the naked eye under illumination with a UV lamp, which enables easy detection of the nanomaterials. The sensor was able to detect the nanomaterials upon direct contact, either by dipping it in their aqueous dispersions, or by sweeping it over their powders. The use of the proposed optical sensor permits the detection of nanomaterials in a straightforward manner, opening new ways for the development of optical sensors for practical applications.
format	article
author	Evie L. Papadopoulou Giulia Biffi Anitha Senthamizhan Beatriz Martín-García Riccardo Carzino Roman Krahne Athanassia Athanassiou
author_facet	Evie L. Papadopoulou Giulia Biffi Anitha Senthamizhan Beatriz Martín-García Riccardo Carzino Roman Krahne Athanassia Athanassiou
author_sort	Evie L. Papadopoulou
title	Paper Sensors Based on Fluorescence Changes of Carbon Nanodots for Optical Detection of Nanomaterials
title_short	Paper Sensors Based on Fluorescence Changes of Carbon Nanodots for Optical Detection of Nanomaterials
title_full	Paper Sensors Based on Fluorescence Changes of Carbon Nanodots for Optical Detection of Nanomaterials
title_fullStr	Paper Sensors Based on Fluorescence Changes of Carbon Nanodots for Optical Detection of Nanomaterials
title_full_unstemmed	Paper Sensors Based on Fluorescence Changes of Carbon Nanodots for Optical Detection of Nanomaterials
title_sort	paper sensors based on fluorescence changes of carbon nanodots for optical detection of nanomaterials
publisher	MDPI AG
publishDate	2021
url	https://doaj.org/article/78e4f2d878584992812027b9db6c8171
work_keys_str_mv	AT evielpapadopoulou papersensorsbasedonfluorescencechangesofcarbonnanodotsforopticaldetectionofnanomaterials AT giuliabiffi papersensorsbasedonfluorescencechangesofcarbonnanodotsforopticaldetectionofnanomaterials AT anithasenthamizhan papersensorsbasedonfluorescencechangesofcarbonnanodotsforopticaldetectionofnanomaterials AT beatrizmartingarcia papersensorsbasedonfluorescencechangesofcarbonnanodotsforopticaldetectionofnanomaterials AT riccardocarzino papersensorsbasedonfluorescencechangesofcarbonnanodotsforopticaldetectionofnanomaterials AT romankrahne papersensorsbasedonfluorescencechangesofcarbonnanodotsforopticaldetectionofnanomaterials AT athanassiaathanassiou papersensorsbasedonfluorescencechangesofcarbonnanodotsforopticaldetectionofnanomaterials
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Paper Sensors Based on Fluorescence Changes of Carbon Nanodots for Optical Detection of Nanomaterials

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