Highly sensitive and linear optical fiber carbon dioxide sensor based on sol-gel matrix doped with silica particles and HPTS

Yu Lung Lo, Chen Shane Chu

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

1 Citation (Scopus)

Abstract

This paper presents a high-performance fiber-optic carbon dioxide (CO 2) sensor based on sol-gel matrix composed of n-octyltriethoxysilane (Octyl-triEOS)/tetraethylorthosilane (TEOS) doped with pH-sensitive fluorescent dye and silica particles. The sensor film consists of 1-hydroxy-3,6,8- pyrenetrisulfonic acid trisodium salt (HPTS, PTS-), silica particles, tetraoctylammonium cation (TOA+), and a tetraoctylammonium hydroxide (TOAOH) phase transfer agent (i.e. the base) immobilized within the sol-gel matrix. The sensor has a sensitivity of approximately 26 and exhibits a uniquely linear response for CO2 concentrations in the range 0∼100 %. The response time of the sensor is 9.8 s when switching from a pure N2 atmosphere to a pure CO2 atmosphere and 195.4 s when switching from CO2 to N2.

Original languageEnglish
Title of host publication20th International Conference on Optical Fibre Sensors
DOIs
Publication statusPublished - 2009 Nov 17
Event20th International Conference on Optical Fibre Sensors - Edinburgh, United Kingdom
Duration: 2009 Oct 52009 Oct 9

Publication series

NameProceedings of SPIE - The International Society for Optical Engineering
Volume7503
ISSN (Print)0277-786X

Other

Other20th International Conference on Optical Fibre Sensors
CountryUnited Kingdom
CityEdinburgh
Period09-10-0509-10-09

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All Science Journal Classification (ASJC) codes

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

Cite this

Lo, Y. L., & Chu, C. S. (2009). Highly sensitive and linear optical fiber carbon dioxide sensor based on sol-gel matrix doped with silica particles and HPTS. In 20th International Conference on Optical Fibre Sensors [75031D] (Proceedings of SPIE - The International Society for Optical Engineering; Vol. 7503). https://doi.org/10.1117/12.833521