首页> 外文期刊>Journal of Wuhan University of Technology. Materials Science >Preparation and Properties of Modified Sol-Gel Sensing Membrane for Fiber Optic Oxygen Sensor
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Preparation and Properties of Modified Sol-Gel Sensing Membrane for Fiber Optic Oxygen Sensor

机译:光纤氧传感器用改性溶胶-凝胶传感膜的制备及性能

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Modified sensing membranes based on fluorescence quenching were prepared by the sol-gel method, using formamide as the drying control chemical additive, tetraethoxysilane as the main material, Ru(phen)_3Cl_2 as the indicator. The membrane with the optimum thickness of 20-50 mu m is uniform and crack-free, in which the indicator has a very small leaking rate. The membrane is immersed in water for 50h, the membrane sensing parameter M decreases by less than 5 percent. The fiber optic oxygen sensor with the sensing membrane has a detection limit of 5 X 10~(-6) M (ppm), a response time of less than 30s, excellent reproducibility and stability.
机译:以甲酰胺为干燥控制化学添加剂,以四乙氧基硅烷为主要原料,以Ru(phen)_3Cl_2为指示剂,通过溶胶-凝胶法制备了基于荧光猝灭的传感膜。最佳厚度为20至50微米的膜是均匀无裂纹的,其中指示器的泄漏率非常小。将膜浸入水中50h,膜感测参数M降低小于5%。带有传感膜的光纤氧气传感器的检测极限为5 X 10〜(-6)M(ppm),响应时间小于30s,具有出色的重现性和稳定性。

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