Double-signal-response residual chlorine sensor and production method thereof, and detection system

Abstract

The invention provides a double-signal-response residual chlorine sensor and a production method thereof, and a detection system. The residual chlorine sensor comprises an interdigital electrode layer and a sensing layer compounded on the interdigital electrode layer, and the sensing layer is composed of amino-modified MOFs material three-dimensional photonic crystals in a close packing manner. The upper surface of the three-dimensional photonic crystals is used as an incident laser irradiation surface of the residual chlorine sensor, and the interdigital electrode layer is used as an electric signal input end. According to the invention, the defects of a slow response speed, low stability, complex operation of an optical residual chlorine sensor, poor real-time detection performance, low selectivity, easy interference and the like of a common electrical residual chlorine sensor at present are overcome, and the beneficial effects of high selectivity, high stability, multi-range application and low cost of residual chlorine are realized.

Description

technical field [0001] The invention relates to the field of photoelectric sensing of micro-nano photoelectric devices, in particular to a novel photoelectric integrated dual-signal response residual chlorine sensor based on amino-modified MOFs materials, a preparation method thereof, and a detection system using the residual chlorine sensor. Background technique [0002] Chlorine gas is the most commonly used elemental gas in water disinfection, deodorization and chemical manufacturing processes due to its strong oxidizing properties and high cost performance. If there is no chlorine in the factory tap water or the amount of chlorine added is not enough, bacteria, Escherichia coli and other microorganisms may multiply in the pipe network, affecting the water quality of the pipe network. If the residual chlorine in water exceeds the normal range of residual chlorine, it will cause serious harm to people and the environment. Therefore, the residual chlorine content is an impo...

AI Technical Summary

Problems solved by technology

[0003] At present, iodometric method and colorimetric method are mostly used to detect residual chlorine content at home and abroad, but these two methods have great disadvantages.

The iodometric method has a small detection range and is only suitable for measuring water samples with a residual chlorine content above 1mg / L, and is susceptible to interference and has low sensitivity (0.05mg / L); the colorimetric method is susceptible to water turbidity and chromaticity. , the accuracy of the results obtained is poor, and both measurements are susceptible to many factors

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