Nanoporous Zeolite Thin Film-Based Fiber Intrinsic Fabry-Perot Interferometric Sensor for Detection of Dissolved Organics in Water

Sensors

Ning Liu²  Juan Hui¹  Cunqiang Sun¹  Junhang Dong³  Luzheng Zhang² 

[1] Department of Electrical and Computer Engineering, New Mexico Institute of Mining and Technology, Socorro, NM 87801, USA;Petroleum Recovery Research Center, New Mexico Institute of Mining and Technology, Socorro, NM 87801, USA;Department of Chemical and Materials Engineering, University of Cincinnati, Cincinnati, OH 45221, USA

关键词: Fiber chemical sensor;    zeolite;    white light interferometry;    dissolved organics;   

DOI  :  10.3390/s6080835

来源: mdpi

【 摘 要 】

A fiber optic intrinsic Fabry-Perot interferometric (IFPI) chemical sensor was developed by fine-polishing a thin layer of polycrystalline nanoporous MFI zeolite synthesized on the cleaved endface of a single mode fiber. The sensor operated by monitoring the optical thickness changes of the zeolite thin film caused by the adsorption of organic molecules into the zeolite channels. The optical thickness of the zeolite thin film was measured by white light interferometry. Using methanol, 2-propanol, and toluene as the model chemicals, it was demonstrated that the zeolite IPFI sensor could detect dissolved organics in water with high sensitivity.

【 授权许可】

Unknown   
© 2006 by MDPI (http://www.mdpi.org).