Crystallinity Engineering of Hematite Nanorods for High-Effi ciency Photoelec…

Photoelectrochemical (PEC) water splitting holds great promise for sustainable energy by harvesting solar energy. In particular,hematite (α-Fe 2 O 3 ) has been extensively investigated as a photoanode for visible light-driven PEC water splitting due to its availability, stability, and suitable bandgap of 1.9–2.2 eV. [ 1–3 ] Fabricating hematite nanostructures provides an effective way to e…