Operando XANES Reveals the Chemical State of Iron-Oxide Monolayers During Low-Temperature CO Oxidation. - Gajdek D; Wallander HJ; Abbondanza G; Harlow GS; Gustafson J; Blomberg S; Carlsson PA; Just J; Lundgren E; Merte LR (Chemphyschem : a European journal of chemical physics and physical chemistry, 2025)