Gold Platinum Core Shell Nanoparticles (Au/Pt, 99.9%, APS: 80-100nm, Metal Core/Metal Shell)

Gold Platinum Core-Shell Nanoparticles

Applications

Catalysis

Fuel Cells: Au-Pt core-shell nanoparticles are widely studied for use in electrocatalysis, particularly in hydrogen fuel cells. Platinum is an excellent catalyst for the oxygen reduction reaction (ORR), which is critical for fuel cell performance. The gold core can enhance the overall stability and prevent the deactivation of platinum, leading to improved fuel cell efficiency and durability.

Hydrogenation Reactions: Platinum is also a highly active catalyst for hydrogenation reactions. Au-Pt core-shell nanoparticles are employed in reactions such as the hydrogenation of alkenes, alkynes, and other organic compounds. The core-shell structure can increase the efficiency of these reactions while preventing the aggregation of platinum, which is common in bulk platinum catalysts.

C-O Bond Activation: In reactions like CO oxidation or C-C coupling reactions, the platinum shell is often the active site, while the gold core can influence the electronic properties of platinum, improving catalytic performance. The gold core helps to stabilize the platinum shell, preventing platinum nanoparticles from sintering or agglomerating under reaction conditions.

Electrocatalysis

Oxygen Reduction Reaction (ORR): Au-Pt core-shell nanoparticles are also used for their electrocatalytic properties in oxygen reduction reactions, which are essential for applications like electrochemical sensors and batteries. Platinum is known for its excellent activity in ORR, but gold can play a role in enhancing the stability of platinum, making these core-shell nanoparticles highly desirable for fuel cell applications.

Hydrogen Evolution Reaction (HER): Gold can contribute to improved charge transfer, and platinum is known for its catalytic activity in hydrogen evolution. Au-Pt nanoparticles are increasingly explored in the production of hydrogen from water through electrolysis, leveraging both metals’ strengths in enhancing HER efficiency.

Methanol Oxidation: In direct methanol fuel cells (DMFCs), Au-Pt core-shell nanoparticles are used to catalyze methanol oxidation reactions. The combination of platinum’s catalytic activity and gold’s stabilizing effects results in higher efficiency and durability for methanol fuel cells.