Nanocomposites and nanomaterials

Modification by nanoparticles as an effective way 
of properties regulation of materials
Platonenko S., Dontsova T.A.
National Technical University of Ukraine «Igor Sikorsky Kyiv Polytechnic Institute».
Prospect Peremogy, 37, Kyiv-03142, Ukraine. 
E-mail: dontsova@ua.fm 

The creation of nanocomposite materials in recent decades is gaining increasing popularity due to the ability to vary the physicochemical properties of materials for various purposes. This is especially important for creating environmental materials, where the ratio of efficient/cost is a particularly significant parameter.
Certain successes have already been achieved in creating nanocomposites by modifying existing materials with various nanoparticles for usage in ecological directions. It has been shown that the modification by nanoparticles in a small amount of such materials as TiO2, SnO2, natural clays and activated carbon leads to an increase in functional properties (synergism phenomenon) by times. Moreover, the cost of such composite materials insignificantly becomes larger [1]. The obtained results indicate the possible formation of a new self-dependent direction – the creation of new materials by modification with nanoparticles.
No less important properties when creating new materials for environmental purposes with the participation of nanoparticles should be harmlessness, stability of properties over time and the possibility of reuse. All these issues in the development of these new composite materials should be considered in parallel [2]. 
Thus, the prospects for the development of the creation of new materials by modification with nanoparticles are obvious. However, in order for this direction to be developed, and in the applied aspects, it is necessary, along with the physicochemical properties of the new obtained nanocomposites, to study their safety and harmlessness to the environment and humans. 

1.	Dontsova T.A., Nahirniak S.V., Astrelin I.M. Metaloxide nanomaterials and nanocomposites of ecological purpose // Journal of Nanomaterials.-2019.- 2019(4).-P. 1-31.
2.	Sufian M., Khattak J., Yousaf S., Rana M. Safety issues associated with the use of nanoparticles in human body // Photodiagnosis and Photodynamic Therapy.-2017.- 19.-P. 67-72.