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Inventions 2016, 1(2), 9; doi:10.3390/inventions1020009

The Development of a Highly Sensitive Fiber-Optic Oxygen Sensor

Department of Mechanical Engineering, Mig-Chi University of Technology, New Taipei 24301, Taiwan
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Author to whom correspondence should be addressed.
Academic Editor: Chien-Hung Liu
Received: 23 March 2016 / Revised: 27 April 2016 / Accepted: 28 April 2016 / Published: 3 May 2016
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Abstract

This paper presents a highly sensitive fiber-optic oxygen sensor. The sensor was fabricated using palladium (II) meso-tetrakis (pentafluorophenyl) porphyrin (PdTFPP) and porous silica nanoparticles embedded in a tetraethylorthosilane (TEOS)/n-octyl-triethoxysilane (Octyl-triEOS) composite xerogel present as a coating on the end of the fiber. Sensitivity is quantified in terms of the ratio IN2/IO2, where IN2 and IO2 represent the intensity of fluorescence detected in a pure nitrogen or pure oxygen environment. The experimental results reveal that this PdTFPP-doped oxygen sensor with porous silica nanoparticles has a sensitivity of IN2/I100O2 = 386. The results also show that this sensor has higher sensitivity than an oxygen sensor based on Pd(II) complex immobilized in a sol-gel matrix. Furthermore, the optical oxygen sensor yields a linear Stern–Volmer plot. The proposed optical sensor has the advantages of easy fabrication, low cost, and high sensitivity to oxygen. View Full-Text
Keywords: fiber-optic oxygen sensor; PdTFPP; porous silica nanoparticles; sol-gel fiber-optic oxygen sensor; PdTFPP; porous silica nanoparticles; sol-gel
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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Chu, C.-S.; Syu, J.-J. The Development of a Highly Sensitive Fiber-Optic Oxygen Sensor. Inventions 2016, 1, 9.

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