A La10Si5NbO27.5 based electrochemical sensor using nano-structured NiO sensing electrode for detection of NO2

作者：Wang, Ling^*; Han, Bingxu; Dai, Lei; Li, Yuehua; Zhou, Huizhu; Wang, Huan

来源：Materials Letters, 2013, 109: 16-19.

DOI：10.1016/j.matlet.2013.07.032

• Sensor
• La10Si5NbO27.5
• Impregnating
• Nanoparticles
• NO2

A novel amperometric-type NO2 sensor based on La10Si5NbO27.5 (LSNO) and nano-structured NiO sensing electrode was fabricated. The nano-structured NiO particles in the range of 20-50 nm were synthesized in LSNO porous layer by the impregnating method. The sensor exhibited well response-recovery characteristics to NO2. The response current was almost linear to NO2 concentration in the range between 2 and 500 ppm at 450-600 degrees C. With increase of operating temperature, the sensitivity increased and reached 95 nA/ppm at 600 degrees C. The response current of the sensor was slightly affected by co-existant O-2 and CO2 in concentration range of 0-10 vol%.

• 出版日期2013-10-15
• 单位华北理工大学