Constructing oxygen vacancy-enriched Fe₂O₃@NiO heterojunctions for highly efficient electrocatalytic alkaline water splitting

Abstract

The oxygen vacancy-enriched Fe2O3@NiO heterojunctions assembled by nanoparticles and nanosheets can be used as a highly efficient and stable dual-function electrocatalyst to achieve efficient all-water splitting.

Engineering MIL-88A-Derived Self-Supported Moss-like Iron Phosphide Particles on Nickel Foam as Robust Bifunctional Electrocatalysts for Overall Water Splitting

“…Testing the HER activity also shows the same pattern (Figure b); the overpotential of the three catalysts was 184, 243, and 291 mV at a current density of 10 mA cm –2 , respectively. Therefore, as shown in Table , ,, these result confirmed the advantage of this MOF intermediate in situ construction strategy and the binder-free electrocatalysis system.…”

Performance Promotion of Multipurpose Catalysts Using Increased Oxygen Vacancy Amounts by Charge-Mismatched Doping

“…The conversion of 2,5-hydroxymethylfurfural (HMF) to 2,5-furandicarboxylic acid (FDCA) has received considerable attention due to the enormous potential of biomass-derived materials in addressing environmental issues. – Electrocatalytic reactions, such as the oxygen evolution reaction (OER) and the hydrogen evolution reaction, have also garnered attention as they enable the activation of diverse energy sources. , Nickel oxide nanoparticles (NiO NPs) have emerged as a promising, cost-effective catalyst for biomass conversion through photocatalytic and electrocatalytic reactions. – However, the catalytic activity of pristine NiO NPs cannot be deemed optimal, thus requiring an effective strategy to enhance their photocatalytic and electrocatalytic activity. Recently, the creation of oxygen vacancies ( V 0 ) on the surface of metal oxide (MO) NPs has emerged as a potent method to improve catalytic performance .…”

“…1−5 Electrocatalytic reactions, such as the oxygen evolution reaction (OER) and the hydrogen evolution reaction, have also garnered attention as they enable the activation of diverse energy sources. 6,7 Nickel oxide nanoparticles (NiO NPs) have emerged as a promising, cost-effective catalyst for biomass conversion through photocatalytic and electrocatalytic reactions. 8−11 However, the catalytic activity of pristine NiO NPs cannot be deemed optimal, thus requiring an effective strategy to enhance their photocatalytic and electrocatalytic activity.…”

Synergistic NiO/Fe2O3 heterostructure-enhanced electrocatalytic performance in dye-sensitized solar cells

“…Numerous advanced synthetic materials, including transition metal phosphides, transition metal sulfides, and transition metal oxides, have been examined in the field of energy conversion and storage. [13][14][15][16][17][18][19] Among these materials, iron oxides have the advantages of being innocuous, affordable, and resource-rich, which has attracted significant attention. 20,21 However, iron oxides have lower electrical conductivity, poor ion transport kinetics, and are easy to agglomerate during synthesis.…”