Abstract
Fast response hydrogen sensors operating at room temperature based on nanoporous palladium (Pd) films supported by treated anodic aluminum oxide (AAO) template have been demonstrated. It was found that the nanoporous Pd film had a quicker and reversible response by a 30-min pore-widening treatment of the AAO template, due to its faster absorption and desorption of hydrogen. We obtained a sensor response time as short as 14 s at 1.4% hydrogen concentration with the 30-min pore-widening treatment of AAO template. The sensor exhibited very good performance at hydrogen concentrations from 0.1% to 2%.
| Original language | English |
|---|---|
| Pages (from-to) | 47-51 |
| Number of pages | 5 |
| Journal | Applied Surface Science |
| Volume | 380 |
| DOIs | |
| State | Published - Sep 1 2016 |
Bibliographical note
Funding Information:This work was supported by National Natural Science Foundation of China under Grant Nos. 61405026 , 61371046 , 61474016 and 61421002 , National Higher-education Institution General Research and Development Funding (ZYGX2014J049), and China Postdoctoral Science Foundation (Grant No. 2014M552330). ZC was also supported by University of Kentucky.
Publisher Copyright:
© 2016 Elsevier B.V.
Keywords
- Anodic aluminum oxide
- Hydrogen sensor
- Nanoporous film
- Palladium
- Pore widening.
ASJC Scopus subject areas
- Chemistry (all)
- Condensed Matter Physics
- Physics and Astronomy (all)
- Surfaces and Interfaces
- Surfaces, Coatings and Films