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H2S gas sensing, properties of CuO-functionalized WO3 nanowires

Title
H2S gas sensing, properties of CuO-functionalized WO3 nanowires
Author
김현우
Keywords
WO3 nanowires; SnO2 nanorods; Gas sensors; CuO-functionalization
Issue Date
2014-08
Publisher
This research was supported by Basic Science Research Program through the National Research Foundation of Korea (NRF) funded by the Ministry of Education (2010-0020163).
Citation
CERAMICS INTERNATIONAL, 2014, 40(7), p.11051-11056
Abstract
This paper compares the H2S gas sensing properties of CuO-functionalized WO3 nanowires with those of CuO-functionalized SnO2 nanorods to see the relative contributions of the nanowire material (WO3 or SnO2) and functionalization material (CuO) to H2S gas sensing properties. Multiple networked CuO-functionalized WO3 nanowire sensors showed electrical responses to H2S gas at 300 degrees C comparable to their CuO-functionalized SnO2 nanorod counterparts. The CuO-functionalized WO3 nanowires and CuO-functionalized SnO2 nanorods exhibited responses of similar to 673% and similar to 798%, respectively, to 100 ppm H2S at 300 degrees C. The ratio of the response of CuO-functionalized WO3 nanowires to H2S gas to that of pristine WO3 nanowires was 3.65, whereas the ratio of the response of CuO-functionalized SnO2 nanorods to H2S gas to that of pristine SnO2 nanorods was 3.84. Differences in sensing mechanism between CuO-functionalized WO3 nanowires and CuO-functionalized SnO2 nanorods are also discussed. (C) 2014 Elsevier Ltd and Techna Group S.r.l. All rights reserved.
URI
https://www.sciencedirect.com/science/article/pii/S0272884214004611http://hdl.handle.net/20.500.11754/47998
ISSN
0272-8842; 1873-3956
DOI
10.1016/j.ceramint.2014.03.120
Appears in Collections:
COLLEGE OF ENGINEERING[S](공과대학) > MATERIALS SCIENCE AND ENGINEERING(신소재공학부) > Articles
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