【作者】 曾嘉仪； 曹小安； 戴惠媚； 孙燕；

【Author】 ZENG Jia-yi,CAO Xiao-an,DAI Hui-mei,SUN Yan (Environmental Science and Engineering Institute,Guangzhou University,Guangzhou 510006,China)

【机构】 广州大学 环境科学与工程学院；

【摘要】 该文研究了四氢呋喃在纳米γ-Al₂O₃/MgO粉体（物质的量之比为3:1）表面的催化发光行为,发现基于此催化材料的气体传感器对四氢呋喃具有较高的灵敏度和优异的选择性。在波长460 nm,温度279℃,载气流速320 mL/min的最佳条件下,其催化发光强度与四氢呋喃气体浓度呈良好的线性关系,线性范围为1～3 000 ppm,检出限为0.67 ppm,响应时间大约5 s。该传感器成功实现了对四氢呋喃气体的在线实时监测。更多还原

【Abstract】 A novel cataluminescence tetrahydrofuran gas sensor was designed based on nanosized γ-Al₂O₃ /MgO（molar ratio 3:1）in the present research.This tetrahydrofuran sensor showed high sensitivity and excellent selectivity at an optimal temperature of 279℃,a wavelength of 460 nm and a flow rate of 320 mL/min.With detection limits of 0.67 ppm,the linear ranges of cataluminescence intensity versus concentrations of tetrahydrofuran vapor were 1.0 -3 000 ppm.The response time of this system was less than 5 s.The sensor is significance in monitoring the vapors of tetrahydrofuran in air.更多还原