Journal
NANO LETTERS
Volume 13, Issue 12, Pages 5938-5943Publisher
AMER CHEMICAL SOC
DOI: 10.1021/nl402998g
Keywords
Room-temperature hydrogen sensor; SnO2 nanowire; synergetic effect of Pd/Sn codeposition
Categories
Funding
- National Research Foundation of Korea (NRF)
- Ministry of Education, Science, and Technology [2011-0017486, 2012R1A4A1029061]
- NRF of Korea
- Korean Government through the Center for Intelligent Nano-Bio Materials at Ewha Womans University [20120000651]
Ask authors/readers for more resources
Semiconducting SnO2 nanowires deposited with Pd and Sn nanoparticles on their surface are shown to be a highly sensitive hydrogen sensor with fast response time at room temperature. Compared with the SnO2 nanowire deposited with Pd or Sn nanoparticles alone, the Pd/Sn-deposited SnO2 nanowire exhibits a significant improvement in the sensitivity and reversibility of sensing hydrogen gas in the air at room temperature. Our investigation indicates that two factors are responsible for the synergistic effect of Pd/Sn codeposition on SnO2 nanowires. One is that in the presence of Pd the oxidation of Sn nanoparticles on the surface of the SnO2 nanowire is incomplete leading only to suboxides SnOx (1 <= x < 2), and the other is that the surface of the Pd/Sn-deposited SnO2 nanowire is almost perfectly hydrophobic.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available