Cathodic shift of onset potential for water oxidation on a Ti⁴⁺doped Fe₂O₃photoanode by suppressing the back reaction

Zn-Co layered double hydroxide modified hematite photoanode for enhanced photoelectrochemical water splitting

“…Additionally, some surface modification Page 3 of 29 A c c e p t e d M a n u s c r i p t 3 methods have also been induced to hematite photoanodes for passivation as well as enhanced water oxidation kinetics [26][27][28]. However, due to a very short hole-electron pair lifetime, poor minority carrier and low kinetics of water oxidation, holes accumulate at the surface, then surface recombination will occur until sufficiently positive potentials are achieved for appreciable charge transfer across the interface, which will give a large overpotential [28,29].…”

Fabrication of superior α-Fe2O3 nanorod photoanodes through ex-situ Sn-doping for solar water splitting

“…Elemental doping plays a critical role in improving the electrical conductivity and in enhancing the PEC performance of hematite photoanodes [5,15]. Dopants, such as Si [16,17], Ti [17][18][19][20][21], Sn [6,15,17,22], Zr [18], Ge [17,23], Mn [14,17], Al [24], and Pt [9,12,25], have been investigated for use in hematite photoanodes. Sn has an advantage over other dopants because Sn ions have a similar ionic radius and Pauling electronegativity compared to Fe ions.…”

Light absorption modulation of novel Fe2TiO5 inverse opals for photoelectrochemical water splitting

“…As a d 5 transition metal oxide insulator, the charge transfer ability of Fe 2 O 3 is orders of magnitude lower than that of TiO 2 . 7 The specific requirement for stable oxides with good conductivity and strong light absorption encourages research into Fe-Ti-O systems. In fact, both Ti doping and Fe doping have been proven to be effective for improving the photoactivities of Fe 2 O 3 and TiO 2 .…”