Alghamdi, N. orcid.org/0000-0001-5994-9737, Alqahtani, Z., Zhou, C. et al. (3 more authors) (2020) Sensing aromatic pollutants in water with catalyst-sensitized water-gated transistor. Chemical Papers, 74 (12). pp. 4169-4180. ISSN 0366-6352
Abstract
Some materials that are active heterogeneous catalysts for the breakdown of non-ionic aromatic solutes in water are found to act as potentiometric sensitizers for same solutes. As an example, here the aromatic water pollutant, benzyl alcohol, was sensed with a limit of detection below its potability limit of 19 μM. Our findings are rationalized on the grounds that both catalysis and sensing rely on adhesion of analyte/substrate on the sensitizer/catalyst. Specifically, a set of powdered transition metal-doped zeolites and related frameworks that catalyze the oxidation of waterborne aromatic pollutants were dispersed in phase transfer matrices. Matrices were introduced into water-gated thin film transistors that act as potentiometric transducers. Potentiometric sensing of non-ionic waterborne pollutants is limited to molecules with a ‘free’ molecular dipole, i.e., a dipole that is not locked in the molecular plane. The present work establishes an application for catalysts beyond catalysis itself. The use of catalysts as sensitizers is recommended for wider uptake and in reverse, to screen candidate catalysts.
Metadata
Item Type: | Article |
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Authors/Creators: |
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Copyright, Publisher and Additional Information: | © 2020 Springer Nature. This is an author-produced version of a paper subsequently published in Chemical Papers. Uploaded in accordance with the publisher's self-archiving policy. |
Keywords: | WGTFT; zeolite; benzyl alcohol; sensor; catalyst |
Dates: |
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Institution: | The University of Sheffield |
Academic Units: | The University of Sheffield > Faculty of Science (Sheffield) > Department of Physics and Astronomy (Sheffield) |
Funding Information: | Funder Grant number Grantham Centre for Sustainable Futures N/A University of Sheffield N/A |
Depositing User: | Mrs Nawal Alghamdi |
Date Deposited: | 17 Jun 2020 14:03 |
Last Modified: | 12 Nov 2021 11:04 |
Status: | Published |
Publisher: | Springer |
Refereed: | Yes |
Identification Number: | 10.1007/s11696-020-01212-3 |
Open Archives Initiative ID (OAI ID): | oai:eprints.whiterose.ac.uk:161673 |