Semiconductor Sensor With Loaded SnO2 Nanoparticles For Early Warning Of Indoor Fires

IF 0.7 Q4 CHEMISTRY, ANALYTICAL
Nelly Maksymovyc, L. Oleksenko, G. Fedorenko, Ganna Arinarkhova
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引用次数: 2

Abstract

Nanosized tin dioxide material with an average particle size of 10-11 nm was prepared by a sol-gel method. The material has been tested as a gas sensitive layer of a semiconductor sensor. Platinum was introduced into the gas sensitive layer to increase the sensor response to hydrogen. It was shown that the Pt-containing sensor has high sensitivity to hydrogen: its electrical resistance changes in 9.2 times in the presence of 22 ppm H2 in air. It was demonstrated that the sensor applicable to a wide range of H2 measurements in air (3-935 ppm) and has a fast dynamic response. The sensor demonstrates rather good reproducibility of its signal to H2 and withstands hydrogen overload (935 ppm) without a loss of its sensitivity to H2 microconcentration (22 ppm). The results are prospective for applying the sensor in the detectors for early warning of indoor fires.
用于室内火灾预警的负载SnO2纳米颗粒半导体传感器
采用溶胶-凝胶法制备了平均粒径为10 ~ 11 nm的纳米二氧化锡材料。该材料已作为半导体传感器的气敏层进行了测试。在气敏层中引入铂以提高传感器对氢的响应。结果表明,含pt传感器对氢气具有很高的灵敏度:在空气中H2含量为22 ppm时,其电阻变化为9.2倍。结果表明,该传感器适用于3 ~ 935 ppm的空气H2测量范围,动态响应速度快。该传感器对氢气的信号具有良好的再现性,可承受氢气过载(935 ppm),而不会失去对氢气微量浓度(22 ppm)的灵敏度。研究结果对该传感器应用于室内火灾预警探测器具有一定的前景。
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来源期刊
CiteScore
1.00
自引率
14.30%
发文量
12
期刊介绍: The journal "Methods and objects of chemical analysis" is peer-review journal and publishes original articles of theoretical and experimental analysis on topical issues and bio-analytical chemistry, chemical and pharmaceutical analysis, as well as chemical metrology. Submitted works shall cover the results of completed studies and shall make scientific contributions to the relevant area of expertise. The journal publishes review articles, research articles and articles related to latest developments of analytical instrumentations.
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