Sanjayan Sathasivam

ACS Applied Materials & Interfaces Cite this: ACS Appl. Mater. Interfaces 2026, XXXX, XXX Click to copy citationCitation copied! . This publication is licensed under CC-BY 4.0 . You are free to share (copy and redistribute) this article in any medium or format and to adapt (remix, transform, and build upon) the material for any purpose, even commercially within the parameters below: Creative Commons (CC): This is a Creative Commons license. Attribution (BY): Credit must be given to the creator.

Surface mapping of photocatalytic activity in heterogeneous TiO2 films Recent developments in advanced spectroscopy and imaging techniques are shedding light into key charge transfer processes and kinetics in photocatalysis. Complementary photocatalytic reactions with local markers and surface structural mapping are essential to establish property-function correlations in photocatalytic materials.

Bismuth oxyhalides, with formula BiOX (X = Cl, Br, and I), have received broad interest in areas such as water splitting, pollutant degradation, and photoelectrochemical sensing, (1,2) with particular focus as emerging materials in photocatalytic applications. (3,4) The tetragonal crystal structure of BiOX materials consists of [Bi2O2]2+ layers sandwiched between double X– slabs.