Improved Hydrogen Evolution Reactions Based on Ru(II) and Ir(III) Polypyridine Complexes

Who: Dr. Gary Hannan, Full Professor, Département de Chimie, Université de Montréal, Montreal, Canada

When: March 11, 2020 at 11:30 am

Where: D’Iorio Hall, room 214


Nature has been using sunlight as its main energy source to oxidize water and fix CO2 to produce carbohydrates for over a billion years. In the research field of molecular artificial photosynthesis, the main objective is to mimic nature by extracting electrons from water and reducing protons or other organic compounds (e.g., CO2) in order to store solar energy in chemical bonds. Since the combustion product of hydrogen is water, this chemical conversion acts as a promising solution for renewable energy. The following work is focused on the reduction of protons. Various polypyridine based Ru(II) and Ir(III) photo-sensitizers in association with oxime-based Co catalysts are investigated under different conditions (various wavelengths of irradiation, various concentrations, organic or aqueous media) and their photo-catalytic activity is discussed.

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