NO2 sensing properties of nanostructured tungsten oxide thin films
作者： A.T. Mane , S.B. Kulkarni , S.T. Navale , A.A. Ghanwat , N.M. Shinde
DOI: 10.1016/J.CERAMINT.2014.08.001
关键词:
摘要: Tungsten oxide (WO3) nanoparticles have been successfully synthesized by sol–gel method for detection of NO2 gas in the low concentration range (5–100 ppm). The sensor based on WO3 was fabricated glass substrate using simple and cost effective drop casting method. structure morphology were studied X-ray diffraction (XRD), field emission scanning electron microscopy (FESEM) transmission (TEM) techniques. photoelectron spectroscopy (XPS) confirms formation WO3. chemiresistive sensing performance films towards various reducing (NH3, H2S, CH3OH & C2H5OH) oxidizing (NO2 Cl2) gases 100–300 °C temperature range. experimental results demonstrate that, highly sensitive selective than other test gases. relationship between response concentrations systematically explored. thin exhibit maximum 34% (towards 100 ppm NO2) with very fast time 24 s are able to detect 5 16%. proposed mechanism presence air discussed. Furthermore, interaction film also investigated impedance spectroscopy.
elsevier.com
sci-hub.se 参考文章(27)
Yasuhiro Shimizu, Naoki Matsunaga, Takeo Hyodo, Makoto Egashira, Improvement of SO2 sensing properties of WO3 by noble metal loading Sensors and Actuators B: Chemical. ,vol. 77, pp. 35- 40 ,(2001) , 10.1016/S0925-4005(01)00669-4
M.R. Mohammadi, D.J. Fray, Semiconductor TiO2–Ga2O3 thin film gas sensors derived from particulate sol–gel route Acta Materialia. ,vol. 55, pp. 4455- 4466 ,(2007) , 10.1016/J.ACTAMAT.2007.04.011
Rajendra C. Pawar, Jin-Woong Lee, Vikas B. Patil, Caroline S. Lee, Synthesis of multi-dimensional ZnO nanostructures in aqueous medium for the application of gas sensor Sensors and Actuators B-chemical. ,vol. 187, pp. 323- 330 ,(2013) , 10.1016/J.SNB.2012.11.100
Chia-Yu Lin, Yueh-Yuan Fang, Chii-Wann Lin, James J. Tunney, Kuo-Chuan Ho, Fabrication of NOx gas sensors using In2O3-ZnO composite films Sensors and Actuators B-chemical. ,vol. 146, pp. 28- 34 ,(2010) , 10.1016/J.SNB.2010.02.040
A.I Gavrilyuk, Photochromism in WO3 thin films Electrochimica Acta. ,vol. 44, pp. 3027- 3037 ,(1999) , 10.1016/S0013-4686(99)00017-1
Wolfgang Göpel, Klaus Dieter Schierbaum, SnO2 sensors: current status and future prospects Sensors and Actuators B: Chemical. ,vol. 26, pp. 1- 12 ,(1995) , 10.1016/0925-4005(94)01546-T
D Davazoglou, T Dritsas, Fabrication and calibration of a gas sensor based on chemically vapor deposited WO3 films on silicon substrates Sensors and Actuators B-chemical. ,vol. 77, pp. 359- 362 ,(2001) , 10.1016/S0925-4005(01)00734-1
S. L. Patil, S. G. Pawar, A. T. Mane, M. A. Chougule, V. B. Patil, Nanocrystalline ZnO thin films: optoelectronic and gas sensing properties Journal of Materials Science: Materials in Electronics. ,vol. 21, pp. 1332- 1336 ,(2010) , 10.1007/S10854-010-0071-5
M. Stankova, X. Vilanova, E. Llobet, J. Calderer, C. Bittencourt, J.J. Pireaux, X. Correig, Influence of the annealing and operating temperatures on the gas-sensing properties of rf sputtered WO3 thin-film sensors Sensors and Actuators B-chemical. ,vol. 105, pp. 271- 277 ,(2005) , 10.1016/J.SNB.2004.06.009
Manmeet Kaur, SK Gupta, CA Betty, Vibha Saxena, VR Katti, SC Gadkari, JV Yakhmi, None, Detection of reducing gases by SnO2 thin films: an impedance spectroscopy study Sensors and Actuators B: Chemical. ,vol. 107, pp. 360- 365 ,(2005) , 10.1016/J.SNB.2004.10.024