四苯基卟啉钴光波导传感元件的制备及对乙醇气体的检测

Preparation of Tetraphenylporphyrin Cobalt Optical Waveguide Sensing Element and Its Detection of Ethanol Gas

摘要:

利用Alder法合成四苯基卟啉钴，实现了对乙醇气体的检测，并通过核磁（1H-NMR）、场发射扫描电子显微镜（FE-SEM）、红外光谱（IR）、紫外光谱（UV-vis）等手段对其进行表征。将四苯基卟啉钴作为敏感试剂，利用旋涂法制备了四苯基卟啉钴薄膜/K 交换玻璃光波导传感元件，对多种气体进行检测。结果表明：敏感元件对乙醇气体具有较好的选择性响应，较高的灵敏度，响应时间和恢复时间分别为1.5 s和13 s，信噪比S/N =4.857，RSD = 0.8% (V/V0 = 1?0-4)。在平行试验中，其结果也具有良好的线性关系（R=0.9924），证明了该元件对乙醇气体检测的准确性。

Abstract:

In this paper, tetraphenylporphyrin cobalt was synthesized via Alder method, achieving the detection of ethanol. Using the means of NMR (1H-NMR), Field-Emission Scanning Electron Microscope (FE-SEM), Infrared (IR), and Ultraviolet (UV-vis) to characterize. We successfully prepared tetraphenylporphyrin cobalt thin film /K exchanged glass waveguide sensing element, that uses tetraphenylporphyrin cobalt as sensitive reagent, by the method of spin coating to detect a variety of gases. The detection results show that the gas sensing element of ethanol have a good selective response, high sensitivity, the response time and recovery time were 1.5 s and 13s respectively, signal to noise ratio S/N = 4.857, RSD = 0.8% (V/V0 = 1?0-4). In parallel experiment, the results have a good linear relationship (R=0.9924), that proved the accuracy of the sensor element to ethanol gas detection.