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Speaker: Katerina Dedkova 

Title: Selected nano- and microscopic particles based on metal oxides: Properties, applications and their presence in the environment.

Abstract: Metal-based, especially oxidic, nanostructures either synthesized as nanomaterials themselves or incorporated into a matrix of various chemical nature are frequently studied.  The nanostructured metal oxides are usually dielectric, have usually interesting optical and magnetic properties, their thermal conductivity is usually remarkable as well. The most fascinating properties of nanostructured metal oxides lay in their interaction with various forms of radiation. Both d-elements, such as nanostructured titanium dioxide, and f-element oxides are capable of absorbing especially UV light and transferring its energy for example into chemical energy (i. e. photocatalysis or antimicrobial action). This talk summarizes my research activities within nanoscience and nanotechnology extending and deepening the knowledge using various characterization techniques, such as electron microscopy, for better understanding of relationship between structure and useful properties of micro- and nano-materials, such as antibacterial or friction properties. Moreover, studies dealing with the usage of electron microscopy techniques as a tool contributing to the evaluation of possible environmental impact of metal-based nanomaterials are given. Detailed characterization of the morphology and composition of unintentionally produced metal-based nanomaterials is important for the studies of their environmental fate and health risks.