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Matériaux nanocomposites sur supports céramiques pour l'assainissement de l'air intérieur

Abstract : In developed countries, people spend more than 85% of their time in enclosed areas. Yet, air can carry pathogenic microorganisms such as Mycobacterium tuberculosis or Legionella pneumophila. In this context, the microbiologic quality of indoor air is an issue of common interest. Air treatment technologies for the microbial disinfection of indoor air do exist. However, most of them need external energy inputs and some do produce harmful compounds (nanoscale powders, ozone) when used. Therefore, the main goal of this thesis is to develop new antimicrobial materials for the disinfection of indoor air. These materials shall not need any energetic assistance and shall not release harmful compounds. To achieve this goal, this thesis focused on functionalizing the surface of macroscopic alumina beads. Several active compounds have been studied: manganese dioxide for its oxidizing properties, zinc oxide for its crystalline structure allowing the synthesis of nanoscale blades for the mechanical disruption of microorganisms and silver for its well-known antimicrobial ability. To assess the germicidal properties of these new materials, new test units have been designed. In particular, this thesis explored the use of tests units working in dynamic conditions with ambient air to evaluate the germicidal ability of materials in lifelike conditions.
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Submitted on : Tuesday, August 25, 2020 - 4:03:08 PM
Last modification on : Tuesday, August 25, 2020 - 4:21:46 PM


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  • HAL Id : tel-02524042, version 2



Aliénor Dutheil de la Rochère. Matériaux nanocomposites sur supports céramiques pour l'assainissement de l'air intérieur. Matériaux. IMT - MINES ALES - IMT - Mines Alès Ecole Mines - Télécom, 2019. Français. ⟨NNT : 2019EMAL0011⟩. ⟨tel-02524042v2⟩



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