Significant progress has been achieved in understanding the mechanism of water oxidation (2 H2O → O2 + 4 H+ + 4 e−), the half-reaction for water splitting using single-site molecular catalysts. The interfacing of these well-known molecular catalysts to conducting electrode surfaces can help create flexible and suitable platforms for practical applications in (photo)electrochemical water splitting systems. Herein, we demonstrate the use of polyacrylic grafted fluorine-doped tin oxide (FTO) electrodes as a platform for anchoring Ru water oxidation catalysts. The modified surfaces were studied by cyclic voltammetry which reveal a reversible Ru(II)/Ru(III) surface-bound couple on FTO, and further surface characterization by IR, UV-Vis spectroscopy and SEM is provided. The various attributes of electrocatalytic water oxidation activity and catalytic pathways on the solid-support will be discussed.

Plasma modified electrodes as a platform for immobilizing water splitting catalysts

256th National Meeting (2018)

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