Highly sensitive hydrogen sensor based on palladium (Pd) nano-rings supported by titania nanotubes (TNTs) substrate has been investigated at room temperature. The TNTs substrate was prepared in various mass fraction of water contents in electrolyte from 5 to 20 %. The water content in the electrolyte increased the tube-diameter and the interstice among tubes. Pd nano-rings were deposited on TNTs substrates using DC magnetron sputtering. The sensor exhibited excellent performance at hydrogen concentrations from 0.05 to 1.6 %. We researched the detection performance of hydrogen sensors made by different TNTs substrates. When the water content was 17.5 wt%, the sensor showed a high sensitivity of 88 % at 1.6 % hydrogen concentration.
|Number of pages||5|
|Journal||Journal of Materials Science: Materials in Electronics|
|State||Published - Jan 1 2017|
Bibliographical noteFunding Information:
This work was supported by National Natural Science Foundation of China under Grant Nos. 61474016 and 61101030, 61371046, 61421002, 61405026. ZC was also partially supported by University of Kentucky.
© 2016, Springer Science+Business Media New York.
ASJC Scopus subject areas
- Electronic, Optical and Magnetic Materials
- Atomic and Molecular Physics, and Optics
- Condensed Matter Physics
- Electrical and Electronic Engineering