Regulating the H adsorption on supported RuO2 toward efficient Hydrogen evolution catalysis

Applied Catalysis A General, Journal Year: 2025, Volume and Issue: unknown, P. 120226 - 120226

Published: March 1, 2025

Language: Английский

Ultrafine Ni-Doped FeOOH Nanoparticles with Rich Oxygen Vacancies to Promote Oxygen Evolution

Langmuir, Journal Year: 2025, Volume and Issue: unknown

Published: April 9, 2025

Nickel iron hydroxide oxide is one of the efficient catalysts for oxygen evolution reaction (OER). However, current synthesis methods, such as solvothermal and electrodeposition, require stringent experimental conditions (e.g., temperature, pressure, solvent) involve complex procedures with high costs. To address this issue, we developed a simple electrostatic self-assembly strategy to synthesize Ni-doped oxyhydroxide (Ni-FeOOH) by combining aminated two-dimensional g-C3N4 trace amounts Ni2+ Fe2+, forming tightly integrated heterostructure (Ni-FeOOH@g-C3N4). This method notable its simplicity ability produce ultrasmall Ni-FeOOH nanoparticles (∼1.9 nm), which significantly enhance active surface area functional sites. The resulting catalyst exhibits exceptional OER performance, achieving low overpotential 260 mV at 10 mA·cm-2 demonstrating long-term stability. Remarkably, despite containing only Ni (2.46%) Fe (3.36%), Ni-FeOOH@g-C3N4 delivers turnover frequency 3.96 s-1, outperforming many conventional hydroxyl oxides. improved performance attributed particle size presence excessive vacancies, lower energy barrier O* formation accelerate kinetics. work proposes constructing metals improve activity.

Language: Английский

Surface-selenization formed NiFe MOF@NiSex heterogeneous arrays for enhanced oxygen evolution and methanol electrooxidation

Journal of Electroanalytical Chemistry, Journal Year: 2024, Volume and Issue: 975, P. 118789 - 118789

Published: Nov. 10, 2024

Language: Английский