A Cyanide-Based Coordination Polymer for Hydrogen Evolution Electrocatalysis
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Research on H2 production has recently been directed to the development of cost-efficient and robust heterogeneous catalysts for hydrogen evolution reaction (HER). Given the promising catalytic activities of several cobalt-based systems and the robustness of Prussian blue analogues in harsh catalytic processes including water oxidation, a Co–Co Prussian blue analogue was investigated as a HER catalyst for the first time. Co–Co Prussian Blue modified fluorine doped tin oxide (FTO) electrode demonstrated a significant HER activity with an onset overpotential of 257 mV, a Tafel slope of 80 mV dec−1, and a turnover frequency of 0.090 s−1 at an overpotential of 250 mV. Comparative XPS, Infrared, and XRD studies performed on pristine and post-catalytic electrodes confirm the stability of the catalyst.
KeywordsPrussian blue Cyanide Water reduction Hydrogen evolution Electrocatalysis
This work was suppoerted by the Grants from The Science and Technology Council of Turkey, TUBITAK (Project No: 215Z249). E. U. thanks TUBITAK for support (Project No: 1929B011500059).
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