Water Oxidation and Oxygen Monitoring by Cobalt-Modified Fluorine-Doped Tin Oxide Electrodes

Most electronic Supporting Information files are available without a subscription to ACS Web Editions

Caleb A. Kent

2013

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  • Most electronic Supporting Information files are available without a subscription to ACS Web Editions
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  • On the basis of cyclic voltammetry measurements, surface-bound Co(II) undergoes a pH-dependent 1eā€“/1H+ oxidation to Co(III), which is followed by pH-dependent catalytic water oxidation
  • O2 reduction at fluoride-doped tin oxide occurs at āˆ’0.33 V vs NHE, allowing for in situ detection of oxygen as it is formed by water oxidation on the surface
  • Controlled-potential electrolysis at 1.61 V vs NHE at pH 7.2 resulted in sustained water oxidation catalysis at a current density of 0.16 mA/cm2 with 29 000 turnovers per site over an electrolysis period of 2 h
  • The Role of Supported Atomically Distributed Metal Species in Electrochemistry and How to Create Them

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