首页|Detection of Indoor Formaldehyde Concentration Using LaSrFeO_3-Doped SnO_2 Gas Sensor
Detection of Indoor Formaldehyde Concentration Using LaSrFeO_3-Doped SnO_2 Gas Sensor
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NETL
NSTL
Trans Tech Publications Ltd
Formaldehyde gas sensors with a structure of ceramic tube were fabricated by using La_(0.8)Sr_(0.2)FeO_3-doped nanometer tin oxide. The highest response to formaldehyde appeared when the heating temperature of the La_(0.8)Sr_(0.2)FeO_3-doped SnO_2 sensor was about 370 ℃. The response of the sensors to formaldehyde was measured in a gas concentration in the range of 0 - 5 ppm. The lowest formaldehyde concentration detected by 2 wt % (weight ratio) of La_(0.8)Sr_(0.2)FeO_3-doped SnO_2 gas sensor was 0.05 ppm. The response and recover times of the sensor to 0.5 ppm formaldehyde were about 120 s and 100 s, respectively. The response of the sensor to some interferent gases was tested.
gas sensorformaldehydedetectiontin oxide
Jing Wang、Xing Ru Chen、Peng Jun Yao、Min Ji、Jin Qing Qi、Wei Wu
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School of electronic and Information Engineering, Dalian University of Technology, Dalian 116023, China
School of Chemical Engineering, Dalian University of Technology, Dalian 116023, China
NETL
NSTL
Trans Tech Publications Ltd
