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Gas sensing using Tri-metal oxides for breathe analysis

机译:使用三金属氧化物进行气体传感呼吸分析

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This article describes the use of a semiconductor gas sensor for disease diagnosis that may potentially serve as diagnostic tool handheld breath analyzer to provide detection device. Tri metal oxides were fabricated by a modified chemical spray pyrolysis technique by the mixing of tungsten and tin salts composition at (1:1, 3:1) respectively, with a concentration of (0.1M). The substrate used was silicon n-type at a temperature (500 °C ±5), with spray distance (25 cm). Structural properties, including x-ray diffraction XRD, scanning electron microscopy SEM and atomic force microscopy AFM, were examined. Moreover, the gas sensing property toward nitrous oxide NO2 gas at a concentration of (10) ppm in air was investigated. Experimental results show formation of tri-metal oxide film (α-SnWO4) with wire and rods structures were achieved from the used salts, which make the sensor suitable for the detection of nitrous oxide levels in the exhaled human breath.
机译:本文介绍了用于疾病诊断的半导体气体传感器,其可能潜在用作诊断工具掌上呼吸分析仪以提供检测装置。通过分别在(1:1,3:1)的钨和锡盐组合物的混合(1:1,3:1)中的改性化学喷雾热解技术,浓度(0.1m),通过改良的化学喷雾热解技术制造三金属氧化物。使用的基材在温度(500℃±5)处是硅N型,喷雾距离(25cm)。检查包括X射线衍射XRD,扫描电子显微镜SEM和原子力显微镜AFM的结构性质。此外,研究了在空气中浓度(10)ppm的氧化亚氮NO 2气体的气体传感性能。实验结果从使用的盐中达到了用钢丝和杆结构的三金属氧化物膜(α-SnWO4)的形成,使得该传感器适于检测呼出人的呼吸中的氧化亚氮水平。

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