摘要
采用旋转甩涂法在钾离子(K+)交换玻璃光波导表面制备了聚乙烯吡咯烷酮(PVP)-环糊精复合薄膜,研制了PVP-环糊精薄膜/K+交换玻璃光波导传感元件,并对挥发性有机气体进行了检测。该气敏元件对苯乙烯和二甲苯具有较好的响应,并能够检测到体积比为1×10-6的苯乙烯和1×10-5的二甲苯。还具有响应及恢复速度快、容易制备等特点。
The composite film is immobilized directly onto the surface of K＋ -exchanged glass OWG by spin coating. After fabricating sensor, the VOCs gases are detected by the gas sensor system. The experiment result indicates that the sensor has high sensitivity towards xylene and styrene gas and fast response speed. The minimum concentration of detection to styrene and xylene of sensor are 1 ×10^-6 and 1 ×10^-5 （volume ratio） respectively. The sensor has fast response and recovery speed and is easily fabricated.
出处
《光学技术》
CAS
CSCD
北大核心
2011年第5期528-532,共5页
Optical Technique
基金
国家自然科学基金资助项目(20965008)
关键词
光波导气敏元件
环糊精
挥发性有机气体
optical waveguide gas sensor
cyclodextrin
volatile organic compounds
