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

Sensors

Xiaoxing Zhang¹  Jing Tie¹ 

[1] State Key Laboratory of Power Transmission Equipment & System Security and New Technology, Chongqing University, Shapingba District, Chongqing 400044, China; E-Mails:

关键词: gas sensor;    Pt doped;    TiO₂ nanotube arrays;    SF₆ decomposition products;   

DOI  :  10.3390/s131114764

来源: mdpi

【 摘 要 】

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.

【 授权许可】

CC BY   
© 2013 by the authors; licensee MDPI, Basel, Switzerland.