Application des dérivés métalliques des polyoxométallates pour la catalyse d'électroréduction de CO2

Abstract : With the recent climate change issues and the recent industrial evolutions, a better management of carbon dioxide (CO2) releases is highly demanded. More and more research is focused on CO2 industrial uses rather than its mere storage. Thus, this PhD project deals with the use of polyoxometalates (POMs), especially transition metals substituted ones (TMS-POMs), for CO2 conversion through its électroréduction. This approach allows both a better electrical power and CO2 release management. Different TMS-POMs structures were prepared, yielding mono and polysubstituted POM with simple transition metal and also functionalized ones with active organometallic complex for CO2 électroréduction. An original synthetic approach allowed us to achieve this late functionalization, opening the way for new catalysts for CO2 conversion. Theirs electrochemical properties, as well as their ability to catalyze CO2 électroréduction were investigated in different reaction media. An overview on the potential application of this complex class has been adopted. Noticeably, it highlighted the ability of these complexes to carry out the 4-electrons and 4-protons reduction of CO2 to formaldehyde.
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Marcelo Girardi. Application des dérivés métalliques des polyoxométallates pour la catalyse d'électroréduction de CO2. Catalyse. Université Pierre et Marie Curie - Paris VI, 2016. Français. ⟨NNT : 2016PA066265⟩. ⟨tel-01445572⟩

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