ZnO–PDMS Nanohybrids: A Novel Optical Sensing Platform for Ethanol Vapor Detection at Room Temperature

Argyro Klini; Stavros Pissadakis; Rabindra N. Das; Emmanuel P. Giannelis; Spiros H. Anastasiadis; Demetrios Anglos

doi:10.1021/jp506632d

ZnO–PDMS Nanohybrids: A Novel Optical Sensing Platform for Ethanol Vapor Detection at Room Temperature

Argyro Klini, Stavros Pissadakis, Rabindra N. Das, Emmanuel P. Giannelis, Spiros H. Anastasiadis, Demetrios Anglos

Research output: Contribution to journal › Article › peer-review

22 Scopus citations

Abstract

© 2014 American Chemical Society. A new optical gas sensor platform based on highly luminescent ZnO-polymer nanohybrids is demonstrated. The nanohybrids consist of ZnO nanoparticles, typically 125 (±25) nm in size, dispersed in an inert cross-linked polydimethylsiloxane (PDMS) matrix. Upon exposure to ethanol-enriched air at room temperature, the nanocomposites exhibit a clear increase in their photoluminescence (PL) emission, which shows a nearly Langmuir dependence on the alcohol vapor pressure. The response time is on the order of 50 s, particularly at low ethanol concentrations. The limit of ethanol vapor detection (LOD) is as low as 0.4 Torr, while the sensor remains unaffected by the presence of water vapor, demonstrating the potential of the ZnO-PDMS system as an optical gas sensing device. The interaction of the ZnO nanoparticles with molecular oxygen plays an essential role on the overall performance of the sensor, as shown in comparative experiments performed in the presence and absence of atmospheric air. Notably, O2 was found to be quite effective in accelerating the sensor recovery process compared to N2 or vacuum.

Original language	English (US)
Pages (from-to)	623-631
Number of pages	9
Journal	The Journal of Physical Chemistry C
Volume	119
Issue number	1
DOIs	https://doi.org/10.1021/jp506632d
State	Published - Dec 24 2014
Externally published	Yes

Bibliographical note

KAUST Repository Item: Exported on 2020-10-01
Acknowledged KAUST grant number(s): KUS-C1-018-02
Acknowledgements: This research was cofinanced by the European Union (European Social Fund-ESF) and Greek national funds through the Operational Program "Education and Lifelong Learning" of the National Strategic Reference Framework (NSRF)-Research Funding Program: THALES, Projects: na(Z)nowire (MIS 380252) and Nanocomp (MIS 377278). E.P.G. acknowledges Award No. KUS-C1-018-02, made by the King Abdullah University of Science and Technology (KAUST). The authors are grateful to A. Manousaki and M. Androulidaki for carrying out SEM and cw PL studies, respectively, as well as to I. Kortidis for his help with the commercial ethanol probe. We acknowledge fruitful discussions with Prof. N. Chaniotakis (Department of Chemistry, Univsity of Crete).
This publication acknowledges KAUST support, but has no KAUST affiliated authors.

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@article{f1bcbe6d4db34dd9a92fca9a6aa1ba7e,

title = "ZnO–PDMS Nanohybrids: A Novel Optical Sensing Platform for Ethanol Vapor Detection at Room Temperature",

abstract = "{\textcopyright} 2014 American Chemical Society. A new optical gas sensor platform based on highly luminescent ZnO-polymer nanohybrids is demonstrated. The nanohybrids consist of ZnO nanoparticles, typically 125 (±25) nm in size, dispersed in an inert cross-linked polydimethylsiloxane (PDMS) matrix. Upon exposure to ethanol-enriched air at room temperature, the nanocomposites exhibit a clear increase in their photoluminescence (PL) emission, which shows a nearly Langmuir dependence on the alcohol vapor pressure. The response time is on the order of 50 s, particularly at low ethanol concentrations. The limit of ethanol vapor detection (LOD) is as low as 0.4 Torr, while the sensor remains unaffected by the presence of water vapor, demonstrating the potential of the ZnO-PDMS system as an optical gas sensing device. The interaction of the ZnO nanoparticles with molecular oxygen plays an essential role on the overall performance of the sensor, as shown in comparative experiments performed in the presence and absence of atmospheric air. Notably, O2 was found to be quite effective in accelerating the sensor recovery process compared to N2 or vacuum.",

author = "Argyro Klini and Stavros Pissadakis and Das, {Rabindra N.} and Giannelis, {Emmanuel P.} and Anastasiadis, {Spiros H.} and Demetrios Anglos",

note = "KAUST Repository Item: Exported on 2020-10-01 Acknowledged KAUST grant number(s): KUS-C1-018-02 Acknowledgements: This research was cofinanced by the European Union (European Social Fund-ESF) and Greek national funds through the Operational Program {"}Education and Lifelong Learning{"} of the National Strategic Reference Framework (NSRF)-Research Funding Program: THALES, Projects: na(Z)nowire (MIS 380252) and Nanocomp (MIS 377278). E.P.G. acknowledges Award No. KUS-C1-018-02, made by the King Abdullah University of Science and Technology (KAUST). The authors are grateful to A. Manousaki and M. Androulidaki for carrying out SEM and cw PL studies, respectively, as well as to I. Kortidis for his help with the commercial ethanol probe. We acknowledge fruitful discussions with Prof. N. Chaniotakis (Department of Chemistry, Univsity of Crete). This publication acknowledges KAUST support, but has no KAUST affiliated authors.",

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doi = "10.1021/jp506632d",

language = "English (US)",

volume = "119",

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AU - Klini, Argyro

AU - Pissadakis, Stavros

AU - Das, Rabindra N.

AU - Giannelis, Emmanuel P.

AU - Anastasiadis, Spiros H.

AU - Anglos, Demetrios

N1 - KAUST Repository Item: Exported on 2020-10-01 Acknowledged KAUST grant number(s): KUS-C1-018-02 Acknowledgements: This research was cofinanced by the European Union (European Social Fund-ESF) and Greek national funds through the Operational Program "Education and Lifelong Learning" of the National Strategic Reference Framework (NSRF)-Research Funding Program: THALES, Projects: na(Z)nowire (MIS 380252) and Nanocomp (MIS 377278). E.P.G. acknowledges Award No. KUS-C1-018-02, made by the King Abdullah University of Science and Technology (KAUST). The authors are grateful to A. Manousaki and M. Androulidaki for carrying out SEM and cw PL studies, respectively, as well as to I. Kortidis for his help with the commercial ethanol probe. We acknowledge fruitful discussions with Prof. N. Chaniotakis (Department of Chemistry, Univsity of Crete). This publication acknowledges KAUST support, but has no KAUST affiliated authors.

PY - 2014/12/24

Y1 - 2014/12/24

N2 - © 2014 American Chemical Society. A new optical gas sensor platform based on highly luminescent ZnO-polymer nanohybrids is demonstrated. The nanohybrids consist of ZnO nanoparticles, typically 125 (±25) nm in size, dispersed in an inert cross-linked polydimethylsiloxane (PDMS) matrix. Upon exposure to ethanol-enriched air at room temperature, the nanocomposites exhibit a clear increase in their photoluminescence (PL) emission, which shows a nearly Langmuir dependence on the alcohol vapor pressure. The response time is on the order of 50 s, particularly at low ethanol concentrations. The limit of ethanol vapor detection (LOD) is as low as 0.4 Torr, while the sensor remains unaffected by the presence of water vapor, demonstrating the potential of the ZnO-PDMS system as an optical gas sensing device. The interaction of the ZnO nanoparticles with molecular oxygen plays an essential role on the overall performance of the sensor, as shown in comparative experiments performed in the presence and absence of atmospheric air. Notably, O2 was found to be quite effective in accelerating the sensor recovery process compared to N2 or vacuum.

AB - © 2014 American Chemical Society. A new optical gas sensor platform based on highly luminescent ZnO-polymer nanohybrids is demonstrated. The nanohybrids consist of ZnO nanoparticles, typically 125 (±25) nm in size, dispersed in an inert cross-linked polydimethylsiloxane (PDMS) matrix. Upon exposure to ethanol-enriched air at room temperature, the nanocomposites exhibit a clear increase in their photoluminescence (PL) emission, which shows a nearly Langmuir dependence on the alcohol vapor pressure. The response time is on the order of 50 s, particularly at low ethanol concentrations. The limit of ethanol vapor detection (LOD) is as low as 0.4 Torr, while the sensor remains unaffected by the presence of water vapor, demonstrating the potential of the ZnO-PDMS system as an optical gas sensing device. The interaction of the ZnO nanoparticles with molecular oxygen plays an essential role on the overall performance of the sensor, as shown in comparative experiments performed in the presence and absence of atmospheric air. Notably, O2 was found to be quite effective in accelerating the sensor recovery process compared to N2 or vacuum.

UR - http://hdl.handle.net/10754/600207

UR - https://pubs.acs.org/doi/10.1021/jp506632d

UR - http://www.scopus.com/inward/record.url?scp=84920683962&partnerID=8YFLogxK

U2 - 10.1021/jp506632d

DO - 10.1021/jp506632d

M3 - Article

SN - 1932-7447

VL - 119

SP - 623

EP - 631

JO - The Journal of Physical Chemistry C

JF - The Journal of Physical Chemistry C

IS - 1

ER -

ZnO–PDMS Nanohybrids: A Novel Optical Sensing Platform for Ethanol Vapor Detection at Room Temperature

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