Nano multi-layered HfO₂/α-Fe₂O₃ nanocomposite photoelectrodes for photoelectrochemical water splitting.

ABSTRACT: This study marks a significant stride in enhancing photoelectrochemical (PEC) water splitting applications through the development of a type II nano-heterojunction comprising HfO₂ and α - Fe₂O₃. Fabricated via Physical Vapor Deposition/Radio Frequency (PVD/RF) sputtering, this nano-heterojunction effectively addresses the efficiency limitations inherent in traditional α - Fe₂O₃photoanodes. The integration of HfO₂ leads to a substantial increase in photocurrent density, soaring from 62 μA/cm² for pure α - Fe₂O₃ to 1.46 mA cm^-2 at 1.23 V versus the Reversible Hydrogen Electrode (RHE). This enhancement, a 23-fold increase, is primarily attributed to the improved absorption of photons

SUBMITTER: Alhabradi M 

PROVIDER: S-EPMC10909753 | biostudies-literature | 2024 Mar

REPOSITORIES: biostudies-literature