H2 evolution has been a subject of intense interest due to its potential use of clean source of energy for the future. A number of metal complexes based on Ni, Co and Fe have been reported for electrocatalytic and/or photocatalytic H2 evolution. Here we report a new type of ligand scaffold that can support both electrocatalytic and photocatalytic H2 production in purely aqueous solution, with Faradaic efficiency of 99% at ?1.4 V (vs SHE) at neutral pH, and TON more than 4000 and TOF up to 4000 h-1 after photolysis at 450 nm in aqueous solution under optimal conditions.H2 evolution has been a subject of intense interest due to its potential use of clean source of energy for the future. A number of metal complexes based on Ni, Co and Fe have been reported for electrocatalytic and/or photocatalytic H2 evolution. Here we report a new type of ligand scaffold that can support both electrocatalytic and photocatalytic H2 production in purely aqueous solution, with Faradaic efficiency of 99% at ?1.4 V (vs SHE) at neutral pH, and TON more than 4000 and TOF up to 4000 h-1 after photolysis at 450 nm in aqueous solution under optimal conditions.

Hydrogen evoduction catalyzed by molecular cobalt complexes in aqueous solution

244th National Meeting (2012)

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