Journal
MATERIALS LETTERS
Volume 212, Issue -, Pages 211-213Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.matlet.2017.10.095
Keywords
Hydrogen sensors; Pd nanoparticles; Microfiber; Polymer films
Funding
- National Natural Science Foundation of China (NSFC) [61405032, 61403074, 61605031]
- Doctoral Scientific Research Startup Foundation of Liaoning Province [201501144]
- Fundamental Research Funds for the Central Universities [N150404022, N150401001]
- China Scholarship Council [201606085023]
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A hydrogen sensor has been proposed by coating Pd nanoparticles-PMMA composite organic sol on silica microfiber independent on any expensive or complex chemical process. The thickness of cladding layer and the diameter of elaborated microfiber were determined as similar to 20 mu m and similar to 57.93 mu m, respectively. Due to the evanescent wave excited by silica microfiber and the amorphous structure of PMMA film, the Pd nanoparticles effectively absorbed the hydrogen molecules and resulted in the shift of resonance wavelength. The experimental results match well with an exponential curve with an average sensitivity of 5.58 nm/%, which is comparable to other electrochemical hydrogen sensors reported recently. (C) 2017 Elsevier B.V. All rights reserved.
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