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Sensors 2013, 13(11), 14764-14776; doi:10.3390/s131114764

A Pt-Doped TiO2 Nanotube Arrays Sensor for Detecting SF6 Decomposition Products

State Key Laboratory of Power Transmission Equipment & System Security and New Technology, Chongqing University, Shapingba District, Chongqing 400044, China
Chongqing Power Company, Beibei, Chongqing 400700, China
Author to whom correspondence should be addressed.
Received: 16 September 2013 / Revised: 18 October 2013 / Accepted: 22 October 2013 / Published: 30 October 2013
(This article belongs to the Special Issue Microarray Sensors)
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The detection of partial discharge and analysis of SF6 gas components in gas-insulated switchgear (GIS) is important for the diagnosis and operating state assessment of power equipment. The use of a Pt-doped TiO2 nanotube arrays sensor for detecting sulfur hexafluoride (SF6) decomposition products is proposed in this paper. The electrochemical pulse deposition method is employed to prepare the sensor array. The sensor’s response to the main characteristic gaseous decomposition products of SF6 is evaluated. The gas sensing characteristic curves of the Pt-doped TiO2 nanotube sensor and intrinsic TiO2 nanotube arrays sensor are compared. The mechanism of the sensitive response is discussed. Test results showed that the Pt-doped nanoparticles not only change the gas sensing selectivity of the TiO2 nanotube arrays sensor with respect to the main characteristic SF6 decomposition products, but also reduce the operating temperature of the sensor. View Full-Text
Keywords: gas sensor; Pt doped; TiO2 nanotube arrays; SF6 decomposition products gas sensor; Pt doped; TiO2 nanotube arrays; SF6 decomposition products

This is an open access article distributed under the Creative Commons Attribution License (CC BY 3.0).

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Zhang, X.; Tie, J.; Zhang, J. A Pt-Doped TiO2 Nanotube Arrays Sensor for Detecting SF6 Decomposition Products. Sensors 2013, 13, 14764-14776.

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