Gas Sensing Properties of C3N4/CuGaO2 Composites Prepared by Hydrothermal Method
A series of C3N4/CuGaO2 composites were synthesized by facile hydrothermal method.The prepared samples were characterized by XRD,SEM,TEM,and XPS.The gas sensing properties of the C3N4/CuGaO2 composites were investigated.Results demonstrate that the gas sensor based on C3N4/CuGaO2-0.3 composite(molar ratio of C3N4 to CuGaO2 is 0.3:1)shows better sensing performance to toluene than CuGaO2 sensor does.Compared with the operating temperature of CuGaO2 sensor(140 ℃),the optimal working temperature of C3N4/CuGaO2-0.3 composite sensor is only 25 ℃,the response to 100 μL/L toluene gas reaches 28,and the detection limit is as low as 0.01 μL/L.The response time and recovery time for the detection of 100 μL/L toluene vapor are 114.2 and 27.4 s,respectively.Moreover,the C3N4/CuGaO2-0.3 composite sensor also exhibits excellent long-term stability,good repeatability,and extraordinary humidity resistance for toluene detection.
C3N4CuGaO2gas sensingtoluene
王春水、吴海燕、焦成、储向峰、梁士明、何丽芳
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安徽工业大学,安徽马鞍山 243002
临沂大学,山东临沂 276005
C3N4 CuGaO1 气体传感器 甲苯
National Natural Science Foundation of ChinaNational Natural Science Foundation of Shandong Province
NETL
NSTL
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