Abstract
Abstract An electrocatalyst based on a manganese carbonate mineral and intended to promote the water oxidation reaction was obtained by simply ball milling rhodochrosite ore. This material was found to catalyze the water oxidation reaction in a stable manner. Mn K-edge and O K-edge X-ray absorption fine structure (XAFS) analyses combined with theoretical simulations showed that the catalyst was composed of MnCO3 with slight distortions of the surface structure. Operando UV-vis absorption spectroscopy and linear combination fitting of XAFS spectra established that a portion of the MnCO3 surface was oxidized to MnO2. The MnO2 generated on the surface of this material likely provided active sites for the water oxidation reaction.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
