摘要
采用简单水热法合成了一系列C_(3)N_(4)/CuGaO_(2)复合材料。采用XRD、SEM、TEM和XPS对制备的样品进行了表征。研究了一系列C_(3)N_(4)/Cu GaO_(2)复合材料的气敏性能。结果表明,基于C_(3)N_(4)/CuGaO_(2)-0.3复合材料(C_(3)N_(4)与Cu GaO_(2)的摩尔比为0.3:1)的气体传感器对甲苯的传感性能优于CuGaO_(2)传感器。相比较于CuGaO_(2)传感器的工作温度(140℃),C_(3)N_(4)/CuGaO_(2)-0.3复合材料传感器的最佳工作温度仅为25℃,对100μL/L甲苯气体的响应达到28,检出限低至0.01μL/L。对100μL/L甲苯气体的响应时间和恢复时间分别为114.2和27.4s。此外,用于检测甲苯的C_(3)N_(4)/CuGaO_(2)-0.3复合材料传感器还具有优异的长期稳定性、良好的重复性和优异的抗湿性能。
A series of C_(3)N_(4)/CuGaO_(2)composites were synthesized by facile hydrothermal method.The prepared samples were characterized by XRD,SEM,TEM,and XPS.The gas sensing properties of the C_(3)N_(4)/CuGaO_(2)composites were investigated.Results demonstrate that the gas sensor based on C_(3)N_(4)/CuGaO_(2)-0.3 composite(molar ratio of C_(3)N_(4)to CuGaO_(2)is 0.3:1)shows better sensing performance to toluene than CuGaO_(2)sensor does.Compared with the operating temperature of CuGaO_(2)sensor(140℃),the optimal working temperature of C_(3)N_(4)/CuGaO_(2)-0.3 composite sensor is only 25℃,the response to 100μL/L toluene gas reaches 28,and the detection limit is as low as 0.01μL/L.The response time and recovery time for the detection of 100μL/L toluene vapor are 114.2 and 27.4 s,respectively.Moreover,the C_(3)N_(4)/CuGaO_(2)-0.3 composite sensor also exhibits excellent long-term stability,good repeatability,and extraordinary humidity resistance for toluene detection.
作者
王春水
吴海燕
焦成
储向峰
梁士明
何丽芳
Wang Chunshui;Wu Haiyan;Jiao Cheng;Chu Xiangfeng;Liang Shiming;He Lifang(Anhui University of Technology,Ma’anshan 243002,China;Linyi University,Linyi 276005,China)
出处
《稀有金属材料与工程》
SCIE
EI
CAS
CSCD
北大核心
2024年第6期1536-1542,共7页
Rare Metal Materials and Engineering
基金
National Natural Science Foundation of China(61971003)
National Natural Science Foundation of Shandong Province(ZR2020MF025)。
