Monitoring Catalytic 2-Propanol Oxidation over CoO Nanowires via Photoluminescence Spectroscopy.

Spectroscopic methods enabling real-time monitoring of dynamic surface processes are a prerequisite for identifying how a catalyst triggers a chemical reaction. We present an photoluminescence spectroscopy approach for probing the thermocatalytic 2-propanol oxidation over mesostructured CoO nanowires. Under oxidative conditions, a distinct blue emission at ∼420 nm is detected that increases with temperature up to 280 °C, with an intermediate maximum at 150 °C.

The Effect of Water on the 2-Propanol Oxidation Activity of Co-Substituted LaFe Co O Perovskites.

Perovskites are interesting oxidation catalysts due to their chemical flexibility enabling the tuning of several properties. In this work, we synthesized LaFe Co O catalysts by co-precipitation and thermal decomposition, characterized them thoroughly and studied their 2-propanol oxidation activity under dry and wet conditions to bridge the knowledge gap between gas and liquid phase reactions. Transient tests showed a highly active, unstable low-temperature (LT) reaction channel in conversion profiles and a stable, less-active high-temperature (HT) channel.

Synergistic Effects of Co and Fe on the Oxygen Evolution Reaction Activity of LaCo Fe O.

In a combined experimental and theoretical study we assess the role of Co incorporation on the OER activity of LaCo Fe O . Phase pure perovskites were synthesized up to in 0.025/0.