A unique approach for high performance photoelectrochemical water splitting: Utilizing coating and doping methods

• Performance of the different photoanodes based on titanium oxide and hematite.
• Fabrication of photoanodes by hydrothermal and layer by layer (LBL) methods.
• Mechanism of Ti-doped hematite with enhanced photocatalytic properties.
• Decreasing the band gap of Ti-doped hematite give enhance Photocurrent density.

Hydrogen photocatalytically is generated from water by utilizing solar radiation, and it is identified as one of the renewable energy sources to influence the global warming. We explore a unique approach to compare the effects of Fe-and Ti doped titanium and iron oxide respectively as photoanodes for photocatalytic water splitting. For this reason five different photoanodes prepared by coating and doping methods on Fluorine thin oxide (FTO) glasses and heat-treated at various temperatures. Specifically, Samples were characterized by field emission scanning electronic microscopy (FESEM), photocurrent density (I–V), optical band gap energy and Raman spectroscopy. Significant performance can be seen in Ti-doped hematite which was improved the photocurrent density while the band gap energy and electron-hole recombination, were decreased.

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