NANOSTRUCTURED POROUS SILICA GLASS AS PROMISING MATERIAL FOR SENSORS (Review)

Abstract

The work is devoted to the study of additional possibilities of using slotted silicate glasses in sensors. These substances are promising because they are chemically stable, mechanically durable and have a very wide inner surface. But due to the very large energy gap, they can glow only in the far ultraviolet range, and, moreover, the intrinsic electrical resistance of standard-sized samples turns out to be quite large. This hinders the direct use of slotted glass in the development of both luminescent and resistive type sensors. However, due to the peculiarities of their structure, these glasses can be used as a matrix for the formation of ensembles of nanoparticles of suitable substances, which are able to form a conductive phase inside the porous sample, which will significantly reduce its resistance, or glow in the visible part of the spectrum, while changing the parameters of its luminescence when the properties change the environment The properties of slotted silicate glasses are systematized and methods of formation of ensembles of nanoparticles of substances suitable for use as an active element of some transmitters are described.