Synthesis of MFI zeolite films on optical fibers for detection of chemical vapors.
We report the development of a novel zeolite-incorporated optical fiber sensor and demonstrate its capability for in situ detection of chemical vapors. The sensor comprises a polycrystalline silicalite thin film grown upon the cleaved end face of a standard single-mode optical fiber. The sensor device operates by measuring the optical reflectivity of the zeolite crystals, which changes reversibly in response to the amount of chemical vapor adsorbed in its crystalline microporous structure. The sensor has been successfully demonstrated for measuring the concentration of isopropanol vapor in mixtures with nitrogen gas.
Xiao
Hai
H
Department of Electrical Engineering, New Mexico Institute of Mining and Technology, Socorro, New Mexico 87801, USA.
Zhang
Jian
J
Dong
Junhang
J
Luo
Ming
M
Lee
Robert
R
Romero
Van
V
D019840:2-Propanol / Q000032:analysis*; D045424:Complex Mixtures / Q000032:analysis*; D004784:Environmental Monitoring / Q000295:instrumentation* / Q000379:methods; D004867:Equipment Design; D019544:Equipment Failure Analysis; D005336:Fiber Optic Technology / Q000295:instrumentation*; D005740:Gases / Q000032:analysis*; D008567:Membranes, Artificial; D009584:Nitrogen / Q000032:analysis*; D055100:Optical Fibers; D012031:Refractometry / Q000295:instrumentation* / Q000379:methods; D014159:Transducers
D045424:Complex Mixtures; D005740:Gases; D008567:Membranes, Artificial; D009584:Nitrogen; D019840:2-Propanol