Charge Transfer in n-FeO and p-α-Fe₂O₃ Nanoparticles for Efficient Hydrogen and Oxygen Evolution Reaction.

ABSTRACT: This study aims to explore the n-FeO and p-α-Fe₂O₃ semiconductor nanoparticles in hydrogen (HER) and oxygen (OER) evolution reactions and a combined full cell electrocatalyst system to electrolyze the water. We have observed a distinct electrocatalytic performance for both HER and OER by tuning the interplay between iron oxidation states Fe²⁺ and Fe³⁺ and utilizing phase-transformed iron oxide nanoparticles (NPs). The Fe²⁺ rich n-FeO NPs exhibited superior HER performance compared to p-α-Fe₂O₃ and Fe(OH)_x NPs, which is attributed to the enhancement in n-type semiconducting nature under HER potential, facilitating the electron transfer for the reduction in H⁺ ions. In contrast, p-α-Fe₂

SUBMITTER: Humayun A 

PROVIDER: S-EPMC11434590 | biostudies-literature | 2024 Sep

REPOSITORIES: biostudies-literature