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U-Shaped Fiber-Optic Detection Elements for Investigation of Photocatalytic Decomposition of Toluene Dissolved in Water
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SYSNO ASEP 0443689 Document Type J - Journal Article R&D Document Type O - Ostatní Subsidiary J Ostatní články Title U-Shaped Fiber-Optic Detection Elements for Investigation of Photocatalytic Decomposition of Toluene Dissolved in Water Author(s) Matějec, Vlastimil (URE-Y)
Bartoň, Ivo (URE-Y) ORCID, RID
Mrázek, Jan (URE-Y) RID, ORCID
Podrazký, Ondřej (URE-Y) RIDNumber of authors 4 Source Title Sensors and Transducers - ISSN 2306-8515
Roč. 27, May (2014), s. 244-252Number of pages 9 s. Publication form Print - P Language eng - English Country FR - France Keywords Toluene detection ; Photocatalytic decomposition ; U-Shaped fiber Subject RIV JA - Electronics ; Optoelectronics, Electrical Engineering R&D Projects GAP102/12/2361 GA ČR - Czech Science Foundation (CSF) Institutional support URE-Y - RVO:67985882 Annotation Several fiber-optic sensing elements consisting of a U-shaped fiber coated by a detection membrane of polydimethylsiloxane have been prepared with arc radii from 0.3 to 2 mm. Angular distributions of the output optical power from the elements have been measured. A high decrease of the transmitted power of paraxial rays has been observed for elements with arc radii below 1 mm. When elements with arc radii above 1 mm were excited by an inclined collimated beam and brought into contact with toluene solutions a maximum sensitivity of 1 dB/mM was determined. Sensing elements have been tested for monitoring the decomposition of toluene dissolved in water by means of photocatalytic TiO2 nanoparticles applied on silica optical fibers. Differences between concentration data obtained by UV spectrophotometry and those obtained by the element on levels of 10-15% have been observed Workplace Institute of Radio Engineering and Electronics Contact Petr Vacek, vacek@ufe.cz, Tel.: 266 773 413, 266 773 438, 266 773 488 Year of Publishing 2016
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