Photothermal Induced Dual-Interface: Accelerating Sustainable Hydrogen Evolution from Formic Acid.

Area of Science:

• Materials Science
• Catalysis
• Renewable Energy

Background:

• Formic acid (FA) is a promising liquid hydrogen carrier for clean energy.
• Current photothermal catalysis systems face challenges in efficiency, stability, and mass transfer.
• Optimizing hydrogen yield and dehydrogenation rate is crucial for practical applications.

Purpose of the Study:

• To develop an advanced system for efficient hydrogen production from formic acid via photothermal catalysis.
• To overcome limitations of traditional liquid-solid bulk systems.
• To achieve high hydrogen yield, stability, and durability.

Main Methods:

• Creation of a photothermal-induced dual-interface system with high spectral absorption and low heat loss.
• Facilitation of FA supply and vaporization to lower the reaction energy barrier.
• Utilizing high concentration (26 M) FA for enhanced reaction kinetics.

Main Results:

• Achieved a record hydrogen evolution rate of 200.9 mmol g^-1 h^-1.
• Demonstrated a performance approximately 15 times higher than conventional liquid-solid bulk systems.
• Ensured continuous operation for over 192 hours without additives or external energy input.

Conclusions:

• The developed dual-interface system significantly enhances interfacial mass transfer and catalytic activity for hydrogen production.
• This strategy offers a sustainable and efficient pathway for hydrogen generation from formic acid.
• Presents a valuable reference for future advancements in sustainable hydrogen production technologies.