Cargando…

Nanostructured Ag-zeolite Composites as Luminescence-based Humidity Sensors

Small silver clusters confined inside zeolite matrices have recently emerged as a novel type of highly luminescent materials. Their emission has high external quantum efficiencies (EQE) and spans the whole visible spectrum. It has been recently reported that the UV excited luminescence of partially...

Descripción completa

Detalles Bibliográficos
Autores principales: Coutino-Gonzalez, Eduardo, Baekelant, Wouter, Dieu, Bjorn, Roeffaers, Maarten B.J., Hofkens, Johan
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MyJove Corporation 2016
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5226226/
https://www.ncbi.nlm.nih.gov/pubmed/27911397
http://dx.doi.org/10.3791/54674
_version_ 1782493626431963136
author Coutino-Gonzalez, Eduardo
Baekelant, Wouter
Dieu, Bjorn
Roeffaers, Maarten B.J.
Hofkens, Johan
author_facet Coutino-Gonzalez, Eduardo
Baekelant, Wouter
Dieu, Bjorn
Roeffaers, Maarten B.J.
Hofkens, Johan
author_sort Coutino-Gonzalez, Eduardo
collection PubMed
description Small silver clusters confined inside zeolite matrices have recently emerged as a novel type of highly luminescent materials. Their emission has high external quantum efficiencies (EQE) and spans the whole visible spectrum. It has been recently reported that the UV excited luminescence of partially Li-exchanged sodium Linde type A zeolites [LTA(Na)] containing luminescent silver clusters can be controlled by adjusting the water content of the zeolite. These samples showed a dynamic change in their emission color from blue to green and yellow upon an increase of the hydration level of the zeolite, showing the great potential that these materials can have as luminescence-based humidity sensors at the macro and micro scale. Here, we describe the detailed procedure to fabricate a humidity sensor prototype using silver-exchanged zeolite composites. The sensor is produced by suspending the luminescent Ag-zeolites in an aqueous solution of polyethylenimine (PEI) to subsequently deposit a film of the material onto a quartz plate. The coated plate is subjected to several hydration/dehydration cycles to show the functionality of the sensing film.
format Online
Article
Text
id pubmed-5226226
institution National Center for Biotechnology Information
language English
publishDate 2016
publisher MyJove Corporation
record_format MEDLINE/PubMed
spelling pubmed-52262262017-01-26 Nanostructured Ag-zeolite Composites as Luminescence-based Humidity Sensors Coutino-Gonzalez, Eduardo Baekelant, Wouter Dieu, Bjorn Roeffaers, Maarten B.J. Hofkens, Johan J Vis Exp Engineering Small silver clusters confined inside zeolite matrices have recently emerged as a novel type of highly luminescent materials. Their emission has high external quantum efficiencies (EQE) and spans the whole visible spectrum. It has been recently reported that the UV excited luminescence of partially Li-exchanged sodium Linde type A zeolites [LTA(Na)] containing luminescent silver clusters can be controlled by adjusting the water content of the zeolite. These samples showed a dynamic change in their emission color from blue to green and yellow upon an increase of the hydration level of the zeolite, showing the great potential that these materials can have as luminescence-based humidity sensors at the macro and micro scale. Here, we describe the detailed procedure to fabricate a humidity sensor prototype using silver-exchanged zeolite composites. The sensor is produced by suspending the luminescent Ag-zeolites in an aqueous solution of polyethylenimine (PEI) to subsequently deposit a film of the material onto a quartz plate. The coated plate is subjected to several hydration/dehydration cycles to show the functionality of the sensing film. MyJove Corporation 2016-11-15 /pmc/articles/PMC5226226/ /pubmed/27911397 http://dx.doi.org/10.3791/54674 Text en Copyright © 2016, Journal of Visualized Experiments http://creativecommons.org/licenses/by-nc-nd/3.0/ This is an open-access article distributed under the terms of the Creative Commons Attribution-NonCommercial-NoDerivs 3.0 Unported License. To view a copy of this license, visithttp://creativecommons.org/licenses/by-nc-nd/3.0/
spellingShingle Engineering
Coutino-Gonzalez, Eduardo
Baekelant, Wouter
Dieu, Bjorn
Roeffaers, Maarten B.J.
Hofkens, Johan
Nanostructured Ag-zeolite Composites as Luminescence-based Humidity Sensors
title Nanostructured Ag-zeolite Composites as Luminescence-based Humidity Sensors
title_full Nanostructured Ag-zeolite Composites as Luminescence-based Humidity Sensors
title_fullStr Nanostructured Ag-zeolite Composites as Luminescence-based Humidity Sensors
title_full_unstemmed Nanostructured Ag-zeolite Composites as Luminescence-based Humidity Sensors
title_short Nanostructured Ag-zeolite Composites as Luminescence-based Humidity Sensors
title_sort nanostructured ag-zeolite composites as luminescence-based humidity sensors
topic Engineering
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5226226/
https://www.ncbi.nlm.nih.gov/pubmed/27911397
http://dx.doi.org/10.3791/54674
work_keys_str_mv AT coutinogonzalezeduardo nanostructuredagzeolitecompositesasluminescencebasedhumiditysensors
AT baekelantwouter nanostructuredagzeolitecompositesasluminescencebasedhumiditysensors
AT dieubjorn nanostructuredagzeolitecompositesasluminescencebasedhumiditysensors
AT roeffaersmaartenbj nanostructuredagzeolitecompositesasluminescencebasedhumiditysensors
AT hofkensjohan nanostructuredagzeolitecompositesasluminescencebasedhumiditysensors