Tuning the Electronic Properties of Prussian Blue Analogues for Efficient Water Oxidation Electrocatalysis: Experimental and Computational Studies
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- Elif Pınar Alsaç
- Department of Chemistry Bilkent University 06800 Ankara Turkey
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- Emine Ülker
- Department of Chemistry Faculty of Arts & Sciences Recep Tayyip Erdogan University 53100 Rize Turkey
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- Satya Vijaya Kumar Nune
- Department of Chemistry Bilkent University 06800 Ankara Turkey
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- Yavuz Dede
- Faculty of Science Department of Chemistry Gazi University 06500 Ankara Turkey
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- Ferdi Karadas
- Department of Chemistry Bilkent University 06800 Ankara Turkey
説明
<jats:title>Abstract</jats:title><jats:p>Although several Prussian Blue analogues (PBAs) have been investigated as water oxidation catalysts, the field lacks a comprehensive study that focuses on the design of the ideal PBA for this purpose. Here, members of a series of PBAs with different cyanide precursors have been investigated to study the effect of hexacyanometal groups on their electrocatalytic water oxidation activities. Cyclic voltammetric, chronoamperometric, and chronopotentiometric measurements have revealed a close relationship between the electron density of electroactive cobalt sites and electrocatalytic activity, which has also been confirmed by infrared and XPS studies. Furthermore, pH‐dependent cyclic voltammetry and computational studies have been performed to gain insight into the catalytic mechanism and electronic structure of cyanide‐based systems to identify possible intermediates and to assign the rate‐determining step of the target process.</jats:p>
収録刊行物
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- Chemistry – A European Journal
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Chemistry – A European Journal 24 (19), 4856-4863, 2018-01-04
Wiley