Presentation Date: Feb 14, 2026
AGSA Abstract
Bimetallic PdNi catalysts were synthesized directly on carbon supports via incipient wetness impregnation of pH-adjusted precursor salts, followed by pulsed laser synthesis to induce nanoparticle formation. Rapid heating and cooling from the laser converts precursor salts into metallic nanoparticles in a single step, yielding an immediately active catalyst whose particle size can be tuned via laser power and pulse duration. Tuning the Pd:Ni ratios reduce precious metal usage while enhancing catalytic performance. Pd70Ni30 and Pd60Ni40 achieved up to a six-fold increase in activity as compared to monometallic Pd/C for hydrogen generation from sodium formate. These catalysts remain active across four reaction cycles, and the activity at the start of each cycle exceeds the previous cycles’ endpoint, suggesting a reversible redox regeneration between formate(reducing) and air(oxidizing) environments. X-ray Diffraction(XRD), Thermo-Gravimetric Analysis(TGA), and Inductively Coupled Plasma(ICP) clarify precursor-to-metal transformations, and guide reevaluation of synthesis conditions for improved catalyst consistency. This work demonstrates the potential for laser driven synthesis of bimetallic catalysts for on-demand hydrogen production.
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