3N4/CuGaO2復合材料。采用XRD、SEM、TEM和XPS對制備的樣品進行了表征。研究了一系列C3N4/CuGaO2復合材料的氣敏性能。結(jié)果表明，基于C3N4/CuGaO2-0.3復合材料（C3N4與CuGaO2的摩爾比為0.3:1）的氣體傳感器對甲苯的傳感性能優(yōu)于CuGaO2傳感器。相比較于CuGaO2傳感器的工作溫度（140 ℃），C3N4/CuGaO2-0.3復合材料傳感器的最佳工作溫度僅為25 ℃，對100 μL/L甲苯氣體的響應達到28，檢出限低至0.01 μL/L。對100 μL/L甲苯氣體的響應時間和恢復時間分別為114.2和27.4 s。此外，用于檢測甲苯的C3N4/CuGaO2-0.3復合材料傳感器還具有優(yōu)異的長期穩(wěn)定性、良好的重復性和優(yōu)異的抗?jié)裥阅堋?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 °C), the optimal working temperature of C3N4/CuGaO2-0.3 composite sensor is only 25 °C, 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."/>
3N4;CuGaO2;氣體傳感器;甲苯;C3N4;CuGaO2;gas sensing;toluene"/>