Gas filters based on modified carbon nanotubes

Nanotubes, being one of the most popular materials in nanotechnology, are finding new applications, for example, in their use as filters for harmful gases. However, in the practical application of nanotubes, it often turns out that after capturing the analyte, there is nochange in their electronic state. This makes it difficult to detect the fact of the adsorption of a substance by electronic devices, for example, touch sensors. One way to solve this problem could be to modify the surface of carbon nanotubes with various atoms, which leads to the creation of nanotubular heterostructures. One of the most effective substances for carrying out substitution reactions is boron. It makes it possible to create a redistribution of electron density on the surface of nanotubes without introducing significant changes to the topology of the nanotube surface. This, in turn, leads to a change in the electronic energy structure of the resulting systems and can lead to a more pronounced change in this structure during the sorption of atoms and molecules on the surface of such modified nanotubes. This article analyzes the influence of boron impurities of various concentrations on the sensor activity of such boron-modified CNTs in relation to carbon dioxide to investigate the possibility of using such borocarbon systems as a material for highly efficient sensors.