Redox-active Sn(II) to lead to SnFe 2 O 4 spinel as a bi-functional water splitting catalyst.
Anubha RajputAmit Anand PandeyAvinava KunduBiswarup ChakrabortyPublished in: Chemical communications (Cambridge, England) (2023)
Despite several reports on metal ferrites for water splitting studies, SnFe 2 O 4 is a rarely explored spinel oxide. Herein, solvothermally prepared ca. 5 nm SnFe 2 O 4 nanoparticles deposited on nickel foam (NF) behaves as a bi-functional electrocatalyst. In alkaline pH, the SnFe 2 O 4 /NF electrode exhibits oxygen evolution reaction (OER) and hydrogen evolution reaction (HER) at moderate overpotentials and shows a fair chronoamperometric stability. Detailed study indicates that iron sites of the spinel are preferably active for the OER while the Sn II sites not only enhance the electrical conductivity of the material but also favor the HER.
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