Abstract
Recently, in chemical sensors of gases operating at low temperatures, polymeric materials with semiconducting properties are used as a gas sensitive element. One of these materials is polyacrylonitrile (PAN). The use of PAN based film as a gas sensitive material has great potential for creating sensors that operate at room temperature without heating. Development of a technology for the production of metal-containing films based on polyacrylonitrile to create unheated sensors for detecting hydrogen sulfide and studying their properties [1]. A semiconductor sensor for detecting hydrogen sulfide, made using fuels and lubricants based on polyacrylonitrile (PAN), received the symbol "P.SS-H2S". It was investigated that the analytical signal of a hydrogen sulfide sensor (σgas/σweather) based on tungsten and copper oxides depends on the amount of the detected component (SH2S ) in the mixture. The developed sensors: S.S-H2S WO3-5% CuO, S.S-H2S WO3-10% CuO and P. S.S-H2S can be used for analytical control of hydrogen sulfide content in objects of various nature.
Highlights
In the world, as a result of scientific and technological progress, in the context of the rapid development of industry, the creation of chemical sensors and signaling devices that ensure the safety of industrial and residential buildings is of great theoretical and practical importance
In connection with the increase in the production and consumption of oil and gas in the country, it is important to develop express methods, reliable sensors and alarms that control the composition of atmospheric air at industrial and residential buildings [2]
Research aimed at the development of fast, sensitive and selective sensors that reliably control the composition of atmospheric air in closed ecosystems, including research within the framework of this master's thesis, are today one of the urgent problems of analytical chemistry [3]
Summary
As a result of scientific and technological progress, in the context of the rapid development of industry, the creation of chemical sensors and signaling devices that ensure the safety of industrial and residential buildings is of great theoretical and practical importance. In order to develop a catalyst for a selective semiconductor hydrogen sulfide sensor, the laws of oxidation of combustible substances in the presence of metal oxides have been studied. The activity and selectivity of metal oxides were studied in the presence of gases such as H2, CO, CH4, and NH3 present in the exhaust gases from various sources along with hydrogen sulfide.
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