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Inventions 2016, 1(2), 9;

The Development of a Highly Sensitive Fiber-Optic Oxygen Sensor

Department of Mechanical Engineering, Mig-Chi University of Technology, New Taipei 24301, Taiwan
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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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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Chu, C.-S.; Syu, J.-J. The Development of a Highly Sensitive Fiber-Optic Oxygen Sensor. Inventions 2016, 1, 9.

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