Surface-enhanced Raman spectroscopic evidence of methanol oxidation on ruthenium electrodes

Article Abstract:

Electrooxidation of methanol on Ru surfaces was investigated using in situ surface-enhanced Raman spectroscopy. The adsorbed CO formation is observed which suggests that methanol oxidation does not occur on Ru at room temperature and the lack of significant methanol oxidation current is attributed to the competing rapid surface oxidation, which forms inactive surface oxides and therefore inhibits the methanol oxidation.

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Reactivity of oxide precursor states on Ru(0001)

Article Abstract:

The CO oxidation reaction on the smooth and defect-rich Ru(0001) surfaces prepared under high vacuum conditions are investigated by using thermal desorption spectroscopy (TDS). Reactive molecular beam scattering (RMBS) is applied to monitor the temporal behavior of the CO2 reaction yield and to analyze the influence of morphology on the reaction pathways.

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Identification of subsurface oxygen species created during oxidation of Ru(0001)

Article Abstract:

The oxidation states formed during low-temperature oxidation (T<500 K) of a Ru(0001) surface are identified with photoelectron spectromicroscopy and thermal desorption (TD) spectroscopy. Adsorption and consecutive incorporation of oxygen are studied following the distinct chemical shifts of the Ru 3d5/2 core levels of the two topmost Ru layers.

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