Volatile Organic Compounds Sensing Using Optical Fibre Long Period Grating with Mesoporous Nano-Scale Coating

Hromadka, Jiri, Korposh, Sergiy, Partridge, Matthew, James, Stephen W, Davis, Frank, Crump, Derrick and Tatam, Ralph P (2017) Volatile Organic Compounds Sensing Using Optical Fibre Long Period Grating with Mesoporous Nano-Scale Coating. Sensors (Basel, Switzerland), 17 (2). pp. 1-16. 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, p-sulphanato calix[4]arene (CA[4]) or p-sulphanato 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
Additional Information: Department of Engineering and Applied Design (This article belongs to the Special Issue Gas Nanosensors)
Uncontrolled Keywords: layer-by-layer (LbL); long period grating (LPG); mesoporous film; p-sulphanato calix[4]arene (CA[4]); p-sulphanato calix[8]arene (CA[8]); phase matching turning point (PMTP); volatile organic compounds (VOCs)
Subjects: Q Science > Q Science (General)
Q Science > QD Chemistry
SWORD Depositor: Debbie Bogard
Depositing User: Debbie Bogard
Date Deposited: 14 Jun 2019 10:50
Last Modified: 14 Jun 2019 10:50
URI: http://eprints.chi.ac.uk/id/eprint/2625

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