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http://dx.doi.org/10.5369/JSST.2012.21.6.451

C2H5OH Sensor Using Porous Cr2O3 Nano-Hexaprisms  

Jeong, Hyun-Mook (Department of Materials Science and Engineering, Korea University)
Lee, Jong-Heun (Department of Materials Science and Engineering, Korea University)
Publication Information
Journal of Sensor Science and Technology / v.21, no.6, 2012 , pp. 451-455 More about this Journal
Abstract
Dense Cr-precursor nano-hexaprisms were prepared by heating the Cr-nitrate aqueous solution containing Hexamethylenetetramine and polyvinylpyrrolidone, which were converted into porous $Cr_2O_3$ nano-hexaprisms containing nanoparticles by heat treatment of Cr-precursors at $600^{\circ}C$ for 2 h in air atmosphere. At the sensor temperature of $300^{\circ}C$, porous $Cr_2O_3$ nano-hexaprism showed the high response ($R_g/R_a$, $R_g$: resistance in gas, $R_a$: resistance in air) to 100 ppm $C_2H_5OH$ ($R_g/R_a=69.8$) with negligible cross-responses to 100 ppm CO and 5 ppm $C_6H_6$. The sensitive and selective detection of $C_2H_5OH$ in porous $Cr_2O_3$ nano-hexaprism were discussed in relation to the morphology of nanostructures.
Keywords
$Cr_2O_3$; $C_2H_5OH$; Gas sensors; Selectivity;
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Times Cited By KSCI : 1  (Citation Analysis)
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1 N. Yamazoe, "Toward innovations of gas sensor technology", Sens. Actuators B, Vol. 108, pp. 2-14, 2005.   DOI   ScienceOn
2 D. D. Vuong, G. Sakai, K. Shimanoe, and N. Yamazoe, "Highly sensitive and selective gas sensors using catalyst-loaded $SnO_2$ nanowires", J. Sensor Sci. & Tech., Vol. 21, No. 3, pp. 167-171, 2012.   DOI   ScienceOn
3 K. -M. Kim, H. -R. Kim, K. -I. Choi, H. -J. Kim, and J. -H. Lee, "ZnO hierarchical nanostructures grown at room temperature and their $C_2H_5OH$ sensor applications", Sens. Actuators B, Vol. 155, pp. 745-751, 2011.   DOI   ScienceOn
4 K. -I. Choi, H. -R. Kim, and J. -H. Lee, "Enhanced CO sensing characteristics of hierarchical and hollow $In_2O_3$ microspheres", Sens. Actuators B, Vol. 138, pp. 497-503, 2009.   DOI   ScienceOn
5 A. M. Ruiz, G. Sakai, A. Cornet, K. Shimanoe, and J. R. Morante, "Cr-doped $TiO_2$ gas sensor for exhaust $NO_2$ monitoring", Sens. Actuators B, Vol. 93, pp. 509-518, 2003.   DOI   ScienceOn
6 N. G. Cho, H. -S. Woo, J. -H. Lee, and I. -D. Kim, "Thin-walled NiO tube networks functionalized with catalytic Pt for highly selective $C_2H_5OH$ sensors using electrospun fibers as a sacrificial template", Chem. Commun., Vol. 47, pp. 11300-11302, 2011.   DOI   ScienceOn
7 Y. -S. Kim, I. -S. Hwang, S. -J. Kim, C. -Y. Lee, and J. -H. Lee, " CuO nanowire gas sensors for air quality control in automotive cabin", Sens. Actuators B, Vol. 135, pp. 298-303, 2008.   DOI   ScienceOn
8 K. -I. Choi, H. -R. Kim, K. -M. Kim, D. Liu, G. Cao, and J. -H. Lee, "$C_2H_5OH$ sensing characteristics of various $Co_3O_4$ nanostructures prepared by solvothermal reaction", Sens. Actuators B, Vol. 143, pp. 183-189, 2010.
9 J. Suehiro, G. Zhou, H. Imakiire, W. Ding, and M. Hara, "Controlled fabrication of carbon nanotube $NO_2$ gas sensor using dielectrophoretic impedance measurement", Sens. Actuators B, Vol. 108, pp. 398-403, 2005.   DOI   ScienceOn
10 J. -H. Lee, "Highly resistive intergranular phases in solid electrolytes: an overview", Monatsh Chem. Vol. 140, pp. 1081-1094, 2009.   DOI   ScienceOn
11 N. Barsan, C. Simion, T. Heine, and S. Pokhrel, "Modeling of sensing and transduction for p-type semiconducting metal oxide based gas sensors", J. Electroceram, Vol. 25, pp. 11-19, 2010.   DOI
12 K. Govender, D. S. Boyle, P.B. Kenway and P. O Brien, "Understanding the factors that govern the deposition and morphology of thin films of ZnO from aqueous solution", J. Mater. Chem., Vol. 14, pp. 2575-2591, 2004.   DOI   ScienceOn
13 R. Hao, J. Yuan, and Q. Peng, "Fabrication and Sensing Behavior of $Cr_2O_3$ Nanofibers via In situ Gelation and Electrospinning", Chem. Lett., Vol. 35, pp. 1248-1249, 2006.   DOI   ScienceOn
14 N. Kohli, O. Singh, R. C. Singh, "Influence of pH particle size and sensing response of chemically synthesized chromium oxide nanoparticles to alcohols", Sens. Actuators B, Vol. 158, pp. 259-264, 2011.   DOI   ScienceOn
15 G. An, Y. Zhang, Z. Liu, Z. Miao, B. Han, S. Miao, and J. Li, "Preparation of porous chromium oxide nanotubes using carbon nanotubes as templates and their application as an ethanol sensor", Nanotechnology, Vol. 19, p. 035504, 2008.   DOI   ScienceOn
16 K. M. McPeak, T. P. Le, N. G. Britton, Z. S. Nickolov, Y. A. Elabd, and J. B. Baxter, "Chemical bath deposition of ZnO nanowires at near-neutral pH conditions without Hexameth-ylenetetramine : Understanding the role of HMTA in ZnO nanowire growth", Langmuir, Vol. 27, pp. 3672-3677, 2011.   DOI   ScienceOn