Fig. 3: Identification of classical SMSI over SP-Cu/LaTiO2 catalyst.
From: Ultra-high thermal stability of sputtering reconstructed Cu-based catalysts
a CO-IR spectra of fresh SP-Cu/LaTiO2 sample with a successive reduction and oxidation treatments: reduced at 250 °C (-250R), further reduced at 500 °C (-500R), then oxidized at 400 °C and again reduced at 250 °C (-ROR). b, c Quasi in-situ XPS of Cu 2p (b) and EPR spectra (c) of SP-Cu/LaTiO2-fresh, SP-Cu/LaTiO2-500R and SP-Cu/LaTiO2-ROR samples. d Reversibility of catalytic performance over CO + NO reaction after redox pretreatments. CO conversions in CO + NO reaction were collected at 250 °C. Before each reaction cycle, samples were pretreated with 99.99% H2 (XR) or 5% O2/He (XO) at different temperatures for 1 h, where X represents the temperatures.
