The use of H2 as a potential source of clean and renewable fuel has attracted great interest in an effort to reduce our current dependence on fossil fuels. Due to its abundance, water plays a key role in this reduction as it can be split into oxygen (O2) and hydrogen gas (H2) particularly with the use of visible light. Designing metal complexes for this type of proton reduction has become crucial. Previously, we designed a cobalt complex with a new type of pentadentate ligand, N,N-Bis(2-pyridinylmethyl)-2,2'-Bipyridine-6-methanamine (DPA-Bpy), that can serve as both an electrocatalyst and photocatalyst for highly efficient H2 production in purely aqueous solution. While [Co(Dpa-Bpy)(H2O)](PF6)3 in combination with [Ru(bpy)3]2+ photosensitizer has proven efficient in production of H2 (TON > 4400), the stability is relatively low with decomposition after 2 h photolysis. We will report the use of organic dyes as photosensitizers for H2 production and their effects on the stability and efficiency in H2 production.

Photocatalytic hydrogen production using Co catalyst and organic photosensitizer without noble metals

246th National Meeting (2013)

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