Gas sensing properties of CuO nanorods synthesized by a microwave-assisted hydrothermal method
Author(s)
Yang, Chao
Su, Xintai
Xiao, Feng
Jian, Jikang
Wang, Jide
Griffith University Author(s)
Year published
2011
Metadata
Show full item recordAbstract
P-type CuO nanorods with the breadth of 15–20 nm and the length of 60–80 nm, have been synthesized using a microwave-assisted hydrothermal (MH) method. The band gap of CuO nanorods was calculated to be 2.75 eV based on the UV–vis absorption spectrum of the product. The gas sensing property of the CuO nanorods to several organic vapors was tested in temperatures ranging from 160 °C to 300 °C. The response of the CuO sensor to ethanol (1000 ppm) was 9.8 at the working temperature of 210 °C. The response time and the recovery time were within the range of 13–42 s and 17–51 s, respectively. Further measurements exhibited stronger ...
View more >P-type CuO nanorods with the breadth of 15–20 nm and the length of 60–80 nm, have been synthesized using a microwave-assisted hydrothermal (MH) method. The band gap of CuO nanorods was calculated to be 2.75 eV based on the UV–vis absorption spectrum of the product. The gas sensing property of the CuO nanorods to several organic vapors was tested in temperatures ranging from 160 °C to 300 °C. The response of the CuO sensor to ethanol (1000 ppm) was 9.8 at the working temperature of 210 °C. The response time and the recovery time were within the range of 13–42 s and 17–51 s, respectively. Further measurements exhibited stronger response to ethanol than to other target gases. The enhanced gas sensing performance of the sensor to ethanol may be attributed to the small size of the CuO particles.
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View more >P-type CuO nanorods with the breadth of 15–20 nm and the length of 60–80 nm, have been synthesized using a microwave-assisted hydrothermal (MH) method. The band gap of CuO nanorods was calculated to be 2.75 eV based on the UV–vis absorption spectrum of the product. The gas sensing property of the CuO nanorods to several organic vapors was tested in temperatures ranging from 160 °C to 300 °C. The response of the CuO sensor to ethanol (1000 ppm) was 9.8 at the working temperature of 210 °C. The response time and the recovery time were within the range of 13–42 s and 17–51 s, respectively. Further measurements exhibited stronger response to ethanol than to other target gases. The enhanced gas sensing performance of the sensor to ethanol may be attributed to the small size of the CuO particles.
View less >
Journal Title
Sensors and Actuators, B: Chemical
Volume
158
Issue
1
Subject
Materials Engineering not elsewhere classified
Optical Physics
Analytical Chemistry
Materials Engineering