Volatile organic compounds sensing with use of fibre optic sensor with long period grating and mesoporous nano-scale coating

Hromadka, Jiri and Korposh, Sergiy and Partridge, Matthew and James, Stephen and Davis, Frank and Charlton, Alex and Crump, Derrick and Tatam, Ralph (2017) Volatile organic compounds sensing with use of fibre optic sensor with long period grating and mesoporous nano-scale coating. Sensors, 17 (2). 205/1-2015/16. ISSN 1424-8220

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Abstract

A long period grating (LPG) modified with a mesoporous film infused with a calixarene as a functional compound was employed for the detection of individual volatile organic compounds (VOCs) and their mixtures. The mesoporous film consisted of an inorganic part, SiO2 nanoparticles (NPs), along with an organic moiety of poly(allylamine hydrochloride) polycation PAH, which was finally infused with the functional compound, calix[4]arene (CA[4]) or calix[8]arene (CA[8]). The LPG sensor was designed to operate at the phase matching turning point to provide the highest sensitivity. The sensing mechanism is based on the measurement of the refractive index (RI) change induced by a complex of the VOCs with calixarene. The LPG, modified with a coating of 5 cycles of (SiO2 NPs/PAH) and infused with CA[4] or CA[8], was exposed to chloroform, benzene, toluene and acetone vapours. The British Standards test of the VOCs emissions from material (BS EN ISO 16000-9:2006) was used to test the LPG sensor performance.

Item Type: Article
Keywords: long period grating (LPG); Volatile organic compounds (VOCs); Phase matching turning point (PMTP); Mesoporous film; Layer-by-layer (LbL); Calix[8]arene (CA[8]); Calix[4]arene (CA[4])
Schools/Departments: University of Nottingham, UK > Faculty of Engineering
Identification Number: 10.3390/s17020205
Depositing User: Eprints, Support
Date Deposited: 26 Jan 2017 11:11
Last Modified: 13 Oct 2017 16:45
URI: http://eprints.nottingham.ac.uk/id/eprint/40102

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