Journal
MATERIALS SCIENCE & ENGINEERING C-MATERIALS FOR BIOLOGICAL APPLICATIONS
Volume 32, Issue 4, Pages 817-821Publisher
ELSEVIER
DOI: 10.1016/j.msec.2012.01.032
Keywords
Sn doped ZnO; Gas sensing property; Ethanol; Acetone
Categories
Funding
- National Natural Science Foundation of China [50502005]
- Beijing Natural Science Foundation [1062008, 1092014]
- Metallurgy Foundation of University of Science and Technology Beijing
- Program for New Century Excellent Talents in University [NCET-07-0065]
- Beijing Novel Program
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Nanostructured pure ZnO (PZO) and Sn doped ZnO (SZO) were deposited on glass templates by chemical deposition method. Before the deposition, electrically conductive silver paste was pasted at the two ends of the glass templates as electrodes. The gas sensing properties of the nanostructured PZO and SZO were systematically investigated by our home-made system, and the results show that Sn doping decreases the response to tested gases. However, it remarkably shortens the response time and recovery time of the sensor. Both PZO and SZO show higher response to acetone than to ethanol, while the response time and recovery time of PZO and SZO to ethanol are shorter than those to acetone, which indicates that the selectivity of ZnO nanostructures to ethanol and acetone are different. (c) 2012 Elsevier B.V. All rights reserved.
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