Selective Detection of NO2 Using Cr-Doped CuO Nanorods

Collection with item attached
2012
Item details URL
http://open-repository.kisti.re.kr/cube/handle/open_repository/484598.do
DOI
10.3390/s120608013
Title
Selective Detection of NO2 Using Cr-Doped CuO Nanorods
Description
This work was supported by KOSEF NRL program grant funded by the Koreangovernment (MEST) (No. R0A-2008-000-20032-0) and the Fundamental R&Dprogram for Core Technology of Materials (M2008010013) funded byMinistry of Knowledge Economy.
abstract
CuO nanosheets, Cr-doped CuO nanosheets, and Cr-doped CuO nanorods were prepared by heating a slurry containing Cu-hydroxide/Cr-hydroxide. Their responses to 100 ppm NO2, C2H5OH, NH3, trimethylamine, C3H8, and CO were measured. For 2.2 at% Cr-doped CuO nanorods, the response (R-a/R-g, R-a: resistance in air, R-g: resistance in gas) to 100 ppm NO2 was 134.2 at 250 degrees C, which was significantly higher than that of pure CuO nano-sheets (R-a/R-g = 7.5) and 0.76 at% Cr-doped CuO nanosheets (R-a/R-g = 19.9). In addition, the sensitivity for NO2 was also markedly enhanced by Cr doping. Highly sensitive and selective detection of NO2 in 2.2 at% Cr-doped CuO nanorods is explained in relation to Cr-doping induced changes in donor density, morphology, and catalytic effects.
provenance
Made available in Cube on 2018-09-28T15:18:22Z (GMT). No. of bitstreams: 0
language
English
author
Kim, Kang-Min
Jeong, Hyun-Mook
Kim, Hae-Ryong
Choi, Kwon-Il
Kim, Hyo-Joong
Lee, Jong-Heun
orcid
Lee, Jong-Heun/0000-0002-3075-3623
accessioned
2018-09-28T15:18:22Z
available
2018-09-28T15:18:22Z
issued
2012
citation
SENSORS(12): 6
issn
1424-8220
uri
http://open-repository.kisti.re.kr/cube/handle/open_repository/484598.do
Funder
교육과학기술부
Funding Program
2단계연구중심대학육성(0.5)
Project ID
1345196541
Jurisdiction
Rep.of Korea
Project Name
2nd Brain Korea 21(Center for Advanced Device Materials)
rights
openAccess
subject
CuO
Cr2O3
p-type
gas sensor
nanostructures
nanosheets
nanorods
type
article


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