The quest for highly sensitive QCM humidity sensors: the coating of CNT/MOF composite sensing films as case study

Handle URI:
http://hdl.handle.net/10754/626105
Title:
The quest for highly sensitive QCM humidity sensors: the coating of CNT/MOF composite sensing films as case study
Authors:
Chappanda, Karumbaiah. N.; Shekhah, Osama ( 0000-0003-1861-9226 ) ; Yassine, Omar ( 0000-0002-0117-8017 ) ; Patole, Shashikant P. ( 0000-0001-6669-6635 ) ; Eddaoudi, Mohamed ( 0000-0003-1916-9837 ) ; Salama, Khaled N. ( 0000-0001-7742-1282 )
Abstract:
The application of metal-organic frameworks (MOFs) as a sensing layer has been attracting great interest over the last decade, due to their uniform properties in terms of high porosity and tunability, which provides a large surface area and/or centers for trapping/binding a targeted analyte. Here we report the fabrication of a highly sensitive humidity sensor that is based on composite thin films of HKUST-1 MOF and carbon nanotubes (CNT). The composite sensing films were fabricated by spin coating technique on a quartz-crystal microbalance (QCM) and a comparison of their shift in resonance frequencies to adsorbed water vapor (5 to 75% relative humidity) is presented. Through optimization of the CNT and HKUST-1 composition, we could demonstrate a 230% increase in sensitivity compared to plain HKUST-1 film. The optimized CNT-HKUST-1 composite thin films are stable, reliable, and have an average sensitivity of about 2.5×10−5 (Δf/f) per percent of relative humidity, which is up to ten times better than previously reported QCM-based humidity sensors. The approach presented here is facile and paves a promising path towards enhancing the sensitivity of MOF-based sensors.
KAUST Department:
Computer, Electrical and Mathematical Sciences and Engineering (CEMSE) Division; Electrical Engineering Program; Sensors Lab; Advanced Membranes and Porous Materials Research Center; Functional Materials Design, Discovery and Development (FMD3); Physical Sciences and Engineering (PSE) Division
Citation:
Chappanda KN, Shekhah O, Yassine O, Patole SP, Eddaoudi M, et al. (2017) The quest for highly sensitive QCM humidity sensors: the coating of CNT/MOF composite sensing films as case study. Sensors and Actuators B: Chemical. Available: http://dx.doi.org/10.1016/j.snb.2017.10.189.
Publisher:
Elsevier BV
Journal:
Sensors and Actuators B: Chemical
KAUST Grant Number:
FCC/1/1972-05-01
Issue Date:
1-Nov-2017
DOI:
10.1016/j.snb.2017.10.189
Type:
Article
ISSN:
0925-4005
Sponsors:
This work was partially sponsored by the Advanced Membranes and Porous Materials Center (AMPMC)’s grant FCC/1/1972-05-01 within the “Stimuli Responsive Materials” thrust. We thank Ulrich Buttner of ‘Microfluidic Lab, part of the Nanofabrication Core Lab’, for providing his assistance in the project.
Additional Links:
http://www.sciencedirect.com/science/article/pii/S0925400517321056
Appears in Collections:
Articles; Advanced Membranes and Porous Materials Research Center; Physical Sciences and Engineering (PSE) Division; Functional Materials Design, Discovery and Development (FMD3); Electrical Engineering Program; Sensors Lab; Computer, Electrical and Mathematical Sciences and Engineering (CEMSE) Division

Full metadata record

DC FieldValue Language
dc.contributor.authorChappanda, Karumbaiah. N.en
dc.contributor.authorShekhah, Osamaen
dc.contributor.authorYassine, Omaren
dc.contributor.authorPatole, Shashikant P.en
dc.contributor.authorEddaoudi, Mohameden
dc.contributor.authorSalama, Khaled N.en
dc.date.accessioned2017-11-02T09:09:33Z-
dc.date.available2017-11-02T09:09:33Z-
dc.date.issued2017-11-01en
dc.identifier.citationChappanda KN, Shekhah O, Yassine O, Patole SP, Eddaoudi M, et al. (2017) The quest for highly sensitive QCM humidity sensors: the coating of CNT/MOF composite sensing films as case study. Sensors and Actuators B: Chemical. Available: http://dx.doi.org/10.1016/j.snb.2017.10.189.en
dc.identifier.issn0925-4005en
dc.identifier.doi10.1016/j.snb.2017.10.189en
dc.identifier.urihttp://hdl.handle.net/10754/626105-
dc.description.abstractThe application of metal-organic frameworks (MOFs) as a sensing layer has been attracting great interest over the last decade, due to their uniform properties in terms of high porosity and tunability, which provides a large surface area and/or centers for trapping/binding a targeted analyte. Here we report the fabrication of a highly sensitive humidity sensor that is based on composite thin films of HKUST-1 MOF and carbon nanotubes (CNT). The composite sensing films were fabricated by spin coating technique on a quartz-crystal microbalance (QCM) and a comparison of their shift in resonance frequencies to adsorbed water vapor (5 to 75% relative humidity) is presented. Through optimization of the CNT and HKUST-1 composition, we could demonstrate a 230% increase in sensitivity compared to plain HKUST-1 film. The optimized CNT-HKUST-1 composite thin films are stable, reliable, and have an average sensitivity of about 2.5×10−5 (Δf/f) per percent of relative humidity, which is up to ten times better than previously reported QCM-based humidity sensors. The approach presented here is facile and paves a promising path towards enhancing the sensitivity of MOF-based sensors.en
dc.description.sponsorshipThis work was partially sponsored by the Advanced Membranes and Porous Materials Center (AMPMC)’s grant FCC/1/1972-05-01 within the “Stimuli Responsive Materials” thrust. We thank Ulrich Buttner of ‘Microfluidic Lab, part of the Nanofabrication Core Lab’, for providing his assistance in the project.en
dc.publisherElsevier BVen
dc.relation.urlhttp://www.sciencedirect.com/science/article/pii/S0925400517321056en
dc.rightsNOTICE: this is the author’s version of a work that was accepted for publication in Sensors and Actuators B: Chemical. Changes resulting from the publishing process, such as peer review, editing, corrections, structural formatting, and other quality control mechanisms may not be reflected in this document. Changes may have been made to this work since it was submitted for publication. A definitive version was subsequently published in Sensors and Actuators B: Chemical, [, , (2017-11-01)] DOI: 10.1016/j.snb.2017.10.189 . © 2017. This manuscript version is made available under the CC-BY-NC-ND 4.0 license http://creativecommons.org/licenses/by-nc-nd/4.0/en
dc.subjectMetal-organic frameworksen
dc.subjectcompositesen
dc.subjectCNTen
dc.subjecthumidityen
dc.subjectsensorsen
dc.titleThe quest for highly sensitive QCM humidity sensors: the coating of CNT/MOF composite sensing films as case studyen
dc.typeArticleen
dc.contributor.departmentComputer, Electrical and Mathematical Sciences and Engineering (CEMSE) Divisionen
dc.contributor.departmentElectrical Engineering Programen
dc.contributor.departmentSensors Laben
dc.contributor.departmentAdvanced Membranes and Porous Materials Research Centeren
dc.contributor.departmentFunctional Materials Design, Discovery and Development (FMD3)en
dc.contributor.departmentPhysical Sciences and Engineering (PSE) Divisionen
dc.identifier.journalSensors and Actuators B: Chemicalen
dc.eprint.versionPost-printen
kaust.authorChappanda, Karumbaiah. N.en
kaust.authorShekhah, Osamaen
kaust.authorYassine, Omaren
kaust.authorPatole, Shashikant P.en
kaust.authorEddaoudi, Mohameden
kaust.authorSalama, Khaled N.en
kaust.grant.numberFCC/1/1972-05-01en
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