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Catalytically Modified Pt/Catalysed TiO_2/SiC Devices for Hydrogen and Hydrocarbon Gas Sensing
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作者 S.Kandasamy A.Trinchi +2 位作者 E.Comini W.Wlodarski G.Sberveglieri 《稀有金属材料与工程》 SCIE EI CAS CSCD 北大核心 2006年第A03期159-162,共4页
In this paper the hydrogen and hydrocarbon gas sensing performance of the Pt/Catalysed TiO_2/SiC devices have been studied.The TiO_2 metal oxide thin films were catalytically modified employing Pt and Pd.The electrica... In this paper the hydrogen and hydrocarbon gas sensing performance of the Pt/Catalysed TiO_2/SiC devices have been studied.The TiO_2 metal oxide thin films were catalytically modified employing Pt and Pd.The electrical properties of the fabricated devices were studied by measuring their capacitance-voltage (C-V),conductance-voltage (G-V) and dynamic response characteristics.The sensor's response as a function of operating temperature (25℃to 700℃) and concentrations less than 1% of the analyte gases have been investigated.The sensitivity of the Pt catalysed TiO_2 sensor was found to be superior when compared to TiO_2 catalysed with Pd.A voltage shift of 3.2 V for 1% propene at 420℃and 2.8 V for 1% hydrogen at 250℃in an ambient containing synthetic air was recorded for the Pt catalysed TiO_2 sensor.The response of Pt catalysed TiO_2 sensor was found to be approximately 4 times larger when compared to the non catalysed counterpart. 展开更多
关键词 gas HYDROGEN PROPENE TiO2 sensor SiC catalysed Pt Pd
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