Oxygen Evolution on Mechanically Strained TiO₂/NiTi: Implications of Compositional Heterogeneity at (Photo)electrocatalytic Interfaces.

ABSTRACT: The adsorption and activation energetics underpinning small molecule conversion on heterogeneous (photo)-electrocatalysts are intrinsically tied to catalyst surface properties. Absent compositional characterization techniques with sufficient interface sensitivity, however, (photo)-electrochemical performance can be misinterpreted in the context of bulk or near-surface material properties. Here we provide a fundamental investigation of the convoluting role of near-surface compositional heterogeneity in the interpretation of (photo)-electrochemical alkaline oxygen evolution reaction (OER) activity, highlighting challenges in correlating composition measured by surface- and near-surface-sensitive probes. TiO₂ thin films grown by air-annealing the superelastic alloy Nitinol (TiO

SUBMITTER: Carvalho OQ 

PROVIDER: S-EPMC12498402 | biostudies-literature | 2025 Oct

REPOSITORIES: biostudies-literature