The research activity on the conversion of solar energy into chemical energy stored in hydrogen via the process of water splitting has been intense for a few decades. However, the cost of the catalysts used in the process and the lower energy conversion achieved have been a major obstacle for using solar energy as a reliable alternative to the well-established conventional fossil fuels .
In this project, we employ innovative operando X-ray spectroscopic techniques to uncover the electronic properties of hematite photoanodes during the photoelectrochemical water splitting process, as well as the nature of the interaction between hematite and the Co-, Ni- and Fe- based oxide electrocatalysts.
 M.G. Walter et al., Chem. Rev. 110, 6446–6473 (2010)