Single-Atom-Substituted Mo<sub>2</sub>C<i>T</i><sub><i>x</i></sub>:Fe-Layered Carbide for Selective Oxygen Reduction to Hydrogen Peroxide: Tracking the Evolution of the MXene Phase
Denis A. Kuznetsov, Zixuan Chen, Paula M. Abdala, Оlga V. Safonova, Alexey Fedorov, Christoph R. Müller
Abstract
into a graphitic carbon framework with dispersed iron oxyhydroxide (ferrihydrite, Fh) species (Fh/C), which are the actual active species. This experimental observation and the results obtained for the titanium and vanadium 2D carbides challenge previous studies that discuss the activity of the native MXene phases in oxygen electrocatalysis. Our work showcases the role of 2D metal carbides as precursors for active carbon-based (electro)catalysts and, more fundamentally, highlights the intrinsic evolution pathways of MXenes in electrocatalysis.
Topics & Concepts
ChemistryElectrocatalystCatalysisMXenesCarbideInorganic chemistryMolybdenumVanadium carbideReversible hydrogen electrodeOxygenVanadiumPhysical chemistryElectrodeElectrochemistryOrganic chemistryWorking electrodeMXene and MAX Phase MaterialsElectrocatalysts for Energy ConversionAdvanced Photocatalysis Techniques