Activable Ru-PdRu nanosheets with heterogeneous interface for High-efficiency alcohol oxidation reaction

Area of Science:

• Materials Science
• Electrochemistry
• Nanotechnology

Background:

• Two-dimensional (2D) nanomaterials with heterogeneous structures offer enhanced catalytic performance due to large surface area and tunable electronic properties.
• Heterogeneous nanostructures are underexplored for alcohol oxidation reactions (AORs).

Purpose of the Study:

• To synthesize and characterize a novel heterostructure nanosheet for improved electrocatalytic activity in AORs.
• To investigate the structure-property relationship of the new material for methanol oxidation reaction (MOR), ethylene glycol oxidation reaction (EGOR), and glycerol oxidation reaction (GOR).

Main Methods:

• Fabrication of ruthenium nanoparticles decorated around the edge of PdRu nanosheets (Ru-PdRu HNSs).
• Electrocatalytic performance evaluation using chronoamperometry and i-t experiments for MOR, EGOR, and GOR.
• Analysis of electronic interactions and active sites at the heterogeneous interface.

Main Results:

• Ru-PdRu HNSs demonstrate superior electrocatalytic behavior towards MOR, EGOR, and GOR due to strong electronic interactions and abundant active sites at the heterogeneous interface.
• The fabricated nanosheets exhibit high durability, maintaining high current density after 4000 s of testing.
• Ru-PdRu HNSs show excellent reusability with negligible activity loss after multiple cycles for MOR and GOR, and even show stepwise current density increases in EGOR after reactivation.

Conclusions:

• The constructed Ru-PdRu heterogeneous interface is key to the enhanced electron transfer and superior electrocatalytic performance.
• Ru-PdRu HNSs represent a promising class of highly durable and efficient electrocatalysts for various alcohol oxidation reactions.
• This work highlights the potential of designing 2D heterogeneous nanostructures for advanced catalytic applications.