다공성 Cr2O3 나노육각기둥을 이용한 C2H5OH 센서
C2H5OH Sensor Using Porous Cr2O3 Nano-Hexaprisms
0
조회
0
다운로드
0
인용
0
참고문헌
키워드
초록
Dense Cr-precursor nano-hexaprisms were prepared by heating the Cr-nitrate aqueous solution containing Hexamethylenetetramine and polyvinylpyrrolidone, which were converted into porous Cr2O3 nano-hexaprisms containing nanoparticles by heat treatment of Crprecursors at 600 for 2 h in air atmosphere. At the sensor temperature of 300 , porous Cr2O3 nano-hexaprism showed the high response (Rg/Ra, Rg: resistance in gas, Ra: resistance in air) to 100 ppm C2H5OH (Rg/Ra=69.8) with negligible cross-responses to 100 ppm CO and 5 ppm C6H6. The sensitive and selective detection of C2H5OH in porous Cr2O3 nano-hexaprism were discussed in relation to the morphology of nanostructures.
Abstract
Dense Cr-precursor nano-hexaprisms were prepared by heating the Cr-nitrate aqueous solution containing Hexamethylenetetramine and polyvinylpyrrolidone, which were converted into porous Cr2O3 nano-hexaprisms containing nanoparticles by heat treatment of Crprecursors at 600 for 2 h in air atmosphere. At the sensor temperature of 300 , porous Cr2O3 nano-hexaprism showed the high response (Rg/Ra, Rg: resistance in gas, Ra: resistance in air) to 100 ppm C2H5OH (Rg/Ra=69.8) with negligible cross-responses to 100 ppm CO and 5 ppm C6H6. The sensitive and selective detection of C2H5OH in porous Cr2O3 nano-hexaprism were discussed in relation to the morphology of nanostructures.
참고문헌 (16)
- N. Yamazoe, "Toward innovations of gas sensor technology", Sens. Actuators B, 108, pp.2~14 (2005)
- 황인성, "Highly Sensitive and Selective Gas Sensors Using Catalyst-Loaded SnO2 Nanowires", 센서학회지, 21(3), pp.167~171 (2012), 한국센서학회
- 이종흔, "ZnO hierarchical nanostructures grown at room temperature and their C2H5OH sensor applications", Sens. Actuator B-Chem., 155, pp.745~751, Elsevier
- 이종흔, "Enhanced CO sensing characteristics of hierarchical and hollow In(2)O(3) microspheres", SENSORS AND ACTUATORS B-CHEMICAL, 138(2), pp.497~503, ELSEVIER SCIENCE SA
- A. M. Ruiz, "Cr-doped TiO2 gas sensor for exhaust NO2 monitoring", Sens. Actuators B, 93, pp.509~518 (2003)
- N. G. Cho, "Thin-walled NiO tube networks functionalized withcatalytic Pt for highly selective C2H5OH sensorsusing electrospun fibers as a sacrificial template", Chem. Commun., 47, pp.11300~11302 (2011)
- Y. -S. Kim, "CuO nanowire gas sensors for air quality control in automotive cabin", Sens. Actuators B, 135, pp.298~303 (2008)
- K. -I. Choi, "C2H5OH sensing characteristics of various Co3O4 nanostructures prepared by solvothermal reaction", Sens. Actuators B, 143, pp.183~189 (2010)
- J. Suehiro, "Controlled fabrication of carbon nanotube NO2 gas sensor using dielectrophoretic impedance measurement", Sens. Actuators B, 108, pp.398~403 (2005)
- 이종흔, "Highly resistive intergranular phases in solid electrolytes: an overview", MONATSHEFTE FUR CHEMIE, 140, pp.1081~1094, SPRINGER WIEN
- N. Barsan, "Modeling of sensing and transduction for p-typesemiconducting metal oxide based gas sensors", J.Electroceram, 25, pp.11~19 (2010)
- R. Hao, "Fabrication and Sensing Behavior of Cr2O3 Nanofibers via In situ Gelation and Electrospinning", Chem. Lett., 35, pp.1248~1249 (2006)
- N. Kohli, "Influence of pH particle size and sensing response of chemically synthesized chromium oxide nanoparticles to alcohols", Sens. Actuators B, 158, pp.259~264 (2011)
- G. An, "Preparation of porous chromium oxide nanotubes using carbon nanotubes as templates and their application as an ethanol sensor", Nanotechnology, 19, pp.035504~ (2008)
- K. Govender, "Understanding the factors that govern the deposition and morphology of thin films of ZnO from aqueous solution", J. Mater. Chem, 14, pp.2575~2591 (2004)
- K. M. McPeak, "Chemical bath deposition of ZnO nanowires at near-neutral pH conditions without Hexameth-ylenetetramine : Understanding the role of HMTA in ZnO nanowire growth", Langmuir, 27, pp.3672~3677 (2011)