Formation of Ba3Nb0.75Mn2.25O9-6H during thermo­chemical reduction of Ba4NbMn3O12-12R

ABSTRACT: Nearly complete conversion to a Ba3Nb0.75Mn2.25O9-6H structure was observed following thermochemical reduction of the parent Ba4NbMn3O12-12R material. The Ba3Nb0.75Mn2.25O9-6H structure represents a hexa­gonal perovskite that displays substitution of Mn onto Nb sites in order to satisfy the 3:1 Mn:Nb ratio within the 6H structural motif. The resurgence of inter­est in hydrogen-related technologies has stimulated new studies aimed at advancing lesser-developed water-splitting processes, such as solar thermochemical hydrogen production (STCH). Progress in STCH has been largely hindered by a lack of new materials able to efficiently split water at a rate comparable to ceria under identical experimental conditions. BaCe0.25Mn0.75O3 (BCM) recently demonstrated enhanced hydrogen production over

SUBMITTER: Strange N 

PROVIDER: S-EPMC10162086 | biostudies-literature | 2023 Apr

REPOSITORIES: biostudies-literature