X-ray spectroscopy for ultrafast processes in photocatalysis
Photocatalysis studies the promotion of the water splitting reaction (H2O -> H2 + 1/2O2) after absorption of sunlight. Although various kinds of photocatalysts have been developped and fundamental studies conducted, the mechanism of photocatalytic water splitting is not well understood.
In order to understand the mechanism of the photocatalytic water splitting reaction, I have been working on the study of ultrafast processes in photocatalysts with time resolved x-ray absorption spectroscopy (XAS) using synchrotron radiation facilities and x-ray free electron lasers (XFEL) combined with ultrafast lasers. My plan is to perform time-resolved resonant inelastic x-ray scattering (RIXS) to better understand the electronic states of photocatalysts.