Commenced in January 2007
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Hydrogen Sensor Based on Surface Activated WO3 Films by Pd Nanoclusters
Abstract:Tungsten trioxide has been prepared by using P-PTA as a precursor on alumina substrates by spin coating method. Palladium introduced on WO3 film via electrolysis deposition by using palladium chloride as catalytic precursor. The catalytic precursor was introduced on the series of films with different morphologies. X-ray diffractometry (XRD), Scanning electron microscopy (SEM) and XPS were applied to analyze structure and morphology of the fabricated thin films. Then we measured variation of samples- electrical conductivity of pure and Pd added films in air and diluted hydrogen. Addition of Pd resulted in a remarkable improvement of the hydrogen sensing properties of WO3 by detection of Hydrogen below 1% at room temperature. Also variation of the electrical conductivity in the presence of diluted hydrogen revealed that response of samples depends rather strongly on the palladium configuration on the surface.
Digital Object Identifier (DOI): doi.org/10.5281/zenodo.1329172Procedia APA BibTeX Chicago EndNote Harvard JSON MLA RIS XML ISO 690 PDF Downloads 1760
 Higuchi T, Nakagomi Sh, Kokubun Y. Field effect hydrogen sensor device with simple structure based on GaN. Sens Actuators B Chem 2009;140:79-85.
 Huang H, Luan W, Zhang JS, Qi YS, Tu ST. Thermoelectric hydrogen sensor working at room temperature prepared by bismuth-telluride P-N couples and Pt/g-Al2O3. Sens Actuators B Chem 2008;128:581-5.
 Ippolito SJ, Kandasamy S, Kalantar-Zadeh K,Wlodarski W. Layered SAWhydrogen sensor withmodified tungsten trioxide selective layer. Sens Actuators B Chem 2005a;108:553-7.
 Ippolito SJ, Kandasamy S, Kalantar-zadeh K, Wlodarski W. Hydrogen sensing characteristics of WO3 thin film conductometric activated by Pt and Au catalysts. Sens Actuators B Chem 2005b;108:154-8.
 Ito K, Kojima K. Hydrogen detection by Schottky diodes. Int J Hydrogen Energy 1982;7:495-7.
 Jakubik WP. Investigations of thin film structures of WO3 and WO3 with Pd for hydrogen detection in a surface acoustic wave sensor system. Thin Solid Films 2007;515:8345-50.
 Korotcenkov G. Metal oxides for solid-state gas sensors: what determines our choice? Mater Sci Eng B 2007;139:1-23.
 Kudo T, Okamoto H, Matsumoto K, Sasaki Y. Peroxopolytungstic acids synthesized by direct reaction of tungsten or tungsten carbide with hydrogen peroxide. Inorg Chim Acta 1986;111:L27-8.
 Luo Sh, Fu G, Chen H. Gas-sensing properties and complex impedance analysis of Ce-added WO3 nanoparticles to VOC gases. Solid-State Electron 2007;51:913-9.
 Malyshev VV, Pislyakov AV. Investigation of gas-sensitivity of sensor structures to hydrogen in a wide range of temperature, concentration and humidity of gas medium. Sens Actuators B Chem 2008;134:913-21.
 Moreno DL, Herna'ndez DM. Effect of the Pd-Au thin film thickness uniformity on the performance of an optical fiber hydrogen sensor. Appl Surf Sci 2007;253:8615-9.
 Nishibori M, Shin W, Izu N, Itoh T, Matsubara I, Yasuda S,et al. Robust hydrogen detection system with a thermoelectric hydrogen sensor for hydrogen station application. Int J Hydrogen Energy 2009;34:2834-41.
 Opara U, Ovec K, Orel B, Georg A, Wittwer V. The gasochromic properties of sol-gel WO3 films with sputtered Pt catalyst. Solar Energy 2000;68:541-51.
 Orel B, Gros elj N, Opara U. Gasochromic effect of palladium doped peroxopolytungstic acid films prepared by the sol-gel route. Sens Actuators B Chem 1998;50:234-45.
 Penza M, Martucci C, Cassano G. NOx gas sensing characteristics of WO3 thin films activated by noble metals (Pd, Pt, Au) layers. Sens Actuators B Chem 1998;50:52-9.
 Ruiz A, Arbiol J, Cirera A, Cornet A, Morante JR. Surface activation by Pt-nanoclusters on titania for gas sensing applications. Mater Sci Eng C 2002;19:105-9.
 Sakai G, Matsunaga N, Shimanoe K. Theory of gas-diffusion controlled sensitivity for thin film semiconductor gas sensor. Sens Actuators B Chem 2001;80:125-31.
 Sekimoto S, Nakagawa H, Okazaki S. A fiber-optic evanescent-wave hydrogen gas sensor using palladiumsupported tungsten oxide. Sens Actuators B Chem 2000;66:142-5.
 Shi J, Wu G, Shen J, Gao G, Zhou B, Ni X, et al. Preparation of Pd doped WO3 films via sol-gel method and their gasochromic properties. Proc SPIE Int Soc Opt EngProceedings 2008;6984. 69843A-69843A-5.
 Slaman M, Dam B, Schreuders H, Griessen R. Optimization of Mgbased fiber optic hydrogen detectors by alloying the catalyst. Int J Hydrogen Energy 2008;33:1084-9.
 Tang WM, Lai PT, Xu JP, Chan CL. Enhanced hydrogensensing characteristics of MI SiC Schottky-diode hydrogen sensor by trichloroethylene oxidation. Sens Actuators A Phys 2005;119:63-7.
 Tsai TH, Chen HI, Lin KW, Hung CW, Hsu CH, Chen LY, et al.Comprehensive study on hydrogen sensing properties of a Pd- AlGaN-based Schottky diode. Int J Hydrogen Energy 2008;33:2986-92.
 Veith GM, Lupini AR. Magnetron sputtering of gold nanoparticles onto WO3 and activated carbon. Catal Today 2007;122:248-53.
 Villatoro J, Moreno DL, Herna'ndez DM. Optical fiber hydrogen sensor for concentrations below the lower explosive limit. Sens Actuators B Chem 2005;110:23-7.
 Wu G, Chen S, Xiao K, Shi J, Shen J, Zhou B, et al. Gasochromic windows coated with Pd doped nanostructured WO3 films. J Vac Sci Technol 2006;26:1-5.
 Yamaguchi T, Kiwa T, Tsukada K, Yokosawa K. Oxygen interference mechanism of platinum-FET hydrogen gas sensor. Sens Actuators A Phys 2007;136:244-8.
 T.Kudo, H.Okamoto, K.Matsumoto and Y.Sasaki, Peroxopolytungstic acids synthesized by direct reaction of tungsten or tungsten carbide with hydrogen peroxide ,Inorg.Chim Acta 111,L27-L28,1986.
 M.J.Madou, S.Roy Morrisson, Chemical Sensing with Solid State Devices,chap3:Solid/Gas Interfaces,Academic Press,1989,pp.67-72.
 M.Bendahan, J. Guerin, R. Boulmani, K.Aguir, WO3 sensor response according to operating temperature: Experiment and modeling, Sensors and Actuators B ,124, 24-29, (2007).