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Exhaled breath gas sensing using pristine and functionalized WO3 nanowire sensors enhanced by UV-light irradiation
Abstract
The development of advanced metal-oxide-semiconductor sensing technologies for the detection of Volatile Organic Compounds (VOCs) present in exhaled breath is of great importance for non-invasive, cheap and fast medical diagnostics. Our experimental studies investigate the effects of operating temperature selection and UV-light irradiation on improving the response of WO3 nanowire sensors towards exhaled breath exposure. Herein, six WO3 nanowire sensors (both pristine and doped with a range of metal nanoparticles such as Pt, Au, Au/Pt, Ni and Fe) were synthesised via Aerosol-Assisted Chemical Vapour Deposition (AACVD) and characterized by means of Atomic Force Microscopy (AFM), Scanning Electron Microscopy (SEM), Transmission Electron Microscopy (TEM) and Energy Dispersive X-ray (EDX-ray). Breath measurements were performed in the dark and under UV-light irradiation at various sensor operating temperatures. The results demonstrate that UV-light irradiation combined with the optimisation of the sensors’ operating temperature can greatly enhance the sensors’ responses towards breath exposure.
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Authors (8)
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Tarik Saidi
- Moulay Ismaïl University, Faculty of Sciences
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Tesfalem Welearegay
- Rovira i Virgili University
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Nezha El Bari
- Moulay Ismaïl University, Faculty of Sciences
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Radu Ionescu
- Uppsala University
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Benachir Bouchikhi
- Moulay Ismaïl University, Faculty of Sciences
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Details
- Category:
- Articles
- Type:
- artykuł w czasopiśmie wyróżnionym w JCR
- Published in:
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SENSORS AND ACTUATORS B-CHEMICAL
no. 273,
pages 1719 - 1729,
ISSN: 0925-4005 - Language:
- English
- Publication year:
- 2018
- Bibliographic description:
- Saidi T., Palmowski D., Babicz-Kiewlicz S., Welearegay T., El Bari N., Ionescu R., Smulko J., Bouchikhi B.: Exhaled breath gas sensing using pristine and functionalized WO3 nanowire sensors enhanced by UV-light irradiation// SENSORS AND ACTUATORS B-CHEMICAL. -Vol. 273, (2018), s.1719-1729
- DOI:
- Digital Object Identifier (open in new tab) 10.1016/j.snb.2018.07.098
- Verified by:
- Gdańsk University of Technology
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