Fiber-optic carbon dioxide sensor based on fluorinated xerogels doped with HPTS

Yu Lung Lo, Chen Shane Chu

Research output: Chapter in Book/Report/Conference proceedingConference contribution

3 Citations (Scopus)

Abstract

This paper presents a high-performance fiber-optic carbon dioxide (CO 2) sensor based on hybrid xerogels composed of alkyl and perfluoroalkyl ORMOSILs (organically modified silicates) doped with pH-sensitive fluorescent dye. The sensor film consists of 1-hydroxy-3,6,8-pyrenetrisulfonic acid trisodium salt (HPTS, PTS-), tetraoctylammonium cation (TOA+), and a tetraoctylammonium hydroxide (TOAOH) phase transfer agent (i.e. the base) immobilized within the hybrid xerogels. The sensor has a sensitivity of approximately 18 and exhibits a linear response for CO2 concentrations in the range 0 ∼ 30 %. The response time of the sensor is 1.7 s when switching from a pure nitrogen atmosphere to a pure CO2 atmosphere and 38.5 s when switching from CO2 to nitrogen.

Original languageEnglish
Title of host publication19th International Conference on Optical Fibre Sensors
DOIs
Publication statusPublished - 2008 Jun 26
Event19th International Conference on Optical Fibre Sensors - Perth, WA, Australia
Duration: 2008 Apr 152008 Apr 18

Publication series

NameProceedings of SPIE - The International Society for Optical Engineering
Volume7004
ISSN (Print)0277-786X

Other

Other19th International Conference on Optical Fibre Sensors
CountryAustralia
CityPerth, WA
Period08-04-1508-04-18

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Computer Science Applications
  • Applied Mathematics
  • Electrical and Electronic Engineering

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