review · Energies
This review evaluates advances in nanocomposites combining bimetallic nanoparticles with either graphene oxide or metal-organic frameworks for the hydrogen evolution reaction. These materials function as photo-, electro-, and photoelectrocatalysts to drive clean hydrogen generation. The assessment examines synthesis methodologies, structural features, and catalytic mechanisms, comparing performance indicators such as current density, onset potential, Tafel slopes, turnover frequency, hydrogen yield, and long-term durability. Platinum- and palladium-based alloys are prominent across both graphene oxide and metal-organic framework supports, alongside gold- and nickel-based systems. Common electrolytes evaluated include sulphuric acid and potassium hydroxide, with potassium hydroxide being the most frequently paired with metal-organic frameworks. Finally, the analysis discusses persistent technical challenges and prospects, pointing to required catalyst optimisation and engineering integration for alternative catalysts in future hydrogen production and storage.
Generating clean hydrogen via water splitting is critical for low-carbon energy systems, but requires efficient, durable catalysts. By evaluating how alloy compositions, supports, and electrolyte environments affect hydrogen production rates and stability, this work clarifies the technical mechanisms governing catalytic performance. This understanding assists researchers in designing more viable alternatives to conventional catalysts for future clean fuel generation and energy storage.
The primary applications are in sustainable hydrogen production and energy storage systems, potentially serving electrolyser manufacturers and clean energy developers. Because the abstract evaluates fundamental laboratory metrics such as turnover frequencies, onset potentials, and durability, this work reflects early-stage research. Transitioning to real-world use will require addressing stated integration challenges and further optimising catalyst durability outside laboratory electrolyte environments.
AI-generated from the published abstract. Always read the original work before citing.
This review extensively discusses current developments in bimetallic nanoparticle–GO and bimetallic nanoparticle–MOF nanocomposites as potential catalysts for HER, along with their different synthesis methodologies, structural characteristics, and catalytic mechanisms. The photoelectrocatalytic performance of these catalysts was also compared based on parameters such as Tafel slope, current density, onset potential, turnover frequency, hydrogen yield, activation energy, stability, and durability. The review shows that the commonly used metal alloys in the bimetallic nanoparticle–GO-based catalysts for HERs include Pt-based alloys (e.g., PtNi, PtCo, PtCu, PtAu, PtSn), Pd-based alloys (e.g., PdAu, PdAg, PdPt) or other combinations, such as AuNi, AuRu, etc., while the most used electrolyte sources are H2SO4 and KOH. For the bimetallic nanoparticle MOF-based catalysts, Pt-based alloys (e.g., PtNi, PtCu), Pd-based alloys (e.g., PdAg, PdCu, PdCr), and Ni-based alloys (e.g., NiMo, NiTi, NiAg, NiCo) took the lead, with KOH being the most frequently used electrolyte source. Lastly, the review addresses challenges and prospects, highlighting opportunities for further optimization and technological integration of the catalysts as promising alternative photo/electrocatalysts for future hydrogen production and storage.
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DOI: 10.3390/en17071646
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