Journal
VACUUM
Volume 81, Issue 3, Pages 394-397Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.vacuum.2006.05.004
Keywords
low-temperature CO sensor; gold/tin dioxide; deposition-precipitation method; Au loading
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A study on the low-temperature CO gas sensors based on Au/SnO2 thick film was reported. Au/SnO2 powders, with different An loading from 0.36 to 3.57 wt%, were prepared by a deposition-precipitation method. Thick films were fabricated from Au/SnO2 powders. The Au/SnO2 thick-film sensors exhibited high sensitivity to CO gas at relatively low operating temperature (83-210 degrees C). We also reported the effect of the An loading in Au/SnO2 on the CO gas sensing behavior. The optimal Au loading in as-prepared Au/SnO2 was 2.86 wt%. (c) 2006 Elsevier Ltd. All rights reserved.
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