Gas sensitivity of hybrid nanostructured films based on polyoxometalates

Energy consumption decreasing presents actual object for producers and users of equipment. Therefore search of materials working at room temperature continues. Chemical sensors of sorption type are widely used for analysis the composition of gaseous and liquid media. Their behavior is determined by sensor characteristics of sensitive sorption layer. The method of hydrolythic polycondensation from tetraethyl orthosilicate solutions was used for forming such films in this work.The technological aspects of gas sensors’ sensitive layers formation by method of hydrolytic polycondensation of polyoxometalates solutions have been investigated. The advantage of the method is the possibility to introduce the basic sorbate activating additives directly into the initial solution. This method enables to obtain sensitive thin films with high specific surface at room temperature. The metrological characteristics of chemical gas sensors based on nanostructured nonorganic oxide films activated by different admixtures have been studied.