Abstract

The efficiency of nanostructured 85% ZnO–15% In₂O₃ and 85% ZnO–12% In₂O₃–3% Fe₂O₃ systems in the detection of ethanol vapor at concentrations of 25 to 104 ppm in air is studied. Under experimental conditions, both systems are characterized by high stability and sensitivity that almost do not change in the presence of water vapor. At 370°С, the response time does not exceed 5 s for both sensor systems. In the entire ethanol concentration range studied, the sensitivity of the three-component sensor system is higher than the sensitivity of the two-component system. The sensor response of the three-component system to 38 ppm ethanol was 12 at 370°С. The reasons governing the effect of the composition of a metal oxide composite on its sensor activity are discussed.

中文翻译：

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空气中乙醇的ZnO纳米复合膜基传感器

摘要

纳米结构的效率85％ZnO–15％In ₂ O ₃和85％ZnO–12％In ₂ O ₃ –3％Fe ₂ O ₃研究了用于检测空气中25至104 ppm浓度的乙醇蒸气的系统。在实验条件下，两个系统都具有高稳定性和灵敏度，在水蒸气存在下几乎不会改变。在370°С时，两个传感器系统的响应时间均不超过5 s。在研究的整个乙醇浓度范围内，三组分传感器系统的灵敏度高于二组分系统的灵敏度。在370°C下，三组分系统对38 ppm乙醇的传感器响应为12。讨论了控制金属氧化物复合物组成对其传感器活性的影响的原因。