Palladium Oxide Core Shell Nanoparticles (Pd/PdO, 99.9%, APS: 80-100nm, Metal Core/Metal Shell)

Palladium Oxide Core-Shell Nanoparticles

Introduction

Palladium oxide core-shell nanoparticles are a unique class of nanomaterials consisting of a core of palladium (Pd) surrounded by a shell of palladium oxide (PdO). These nanoparticles combine the properties of both palladium and palladium oxide, which makes them highly versatile for various applications, particularly in catalysis, energy storage, and sensing.

Applications

Catalysis:

Hydrogenation Reactions: Palladium is well-known for its ability to catalyze hydrogenation reactions. PdO@Pd nanoparticles offer improved efficiency and selectivity in hydrogenation, such as in the reduction of alkenes, alkynes, and aromatic compounds.

Oxidation Reactions: The PdO shell can enhance the catalyst’s performance in oxidation reactions, such as in the oxidation of alcohols to aldehydes or ketones, or the oxidation of CO in fuel cells.

Suzuki Coupling Reactions: These core-shell nanoparticles are effective in catalyzing carbon-carbon bond formation reactions, such as the Suzuki coupling reaction, which is essential for the synthesis of organic compounds, pharmaceuticals, and materials.

Fuel Cells and Hydrogen Storage:

Hydrogenation in Fuel Cells: PdO@Pd nanoparticles are used in proton exchange membrane fuel cells (PEMFCs) as part of the catalyst for hydrogen oxidation and reduction reactions. Their high catalytic efficiency and stability are crucial for enhancing the performance of hydrogen fuel cells.

Hydrogen Storage: Palladium has the unique ability to absorb hydrogen gas. PdO@Pd nanoparticles may be used to improve hydrogen storage and release processes, especially in fuel cell technology where hydrogen must be efficiently stored and released.

Sensing:

Gas Sensing: Palladium oxide is known for its sensitivity to various gases such as hydrogen, carbon monoxide, and nitrogen oxides. PdO@Pd nanoparticles are used in gas sensors for detecting these gases, which is useful in environmental monitoring, industrial applications, and safety devices.

Electrochemical Sensors: PdO@Pd-based sensors can also detect small molecules, ions, or biomolecules in solutions, making them useful for biochemical sensing and diagnostics.

Environmental Remediation:

Pollution Control: PdO@Pd nanoparticles can be used to degrade harmful organic pollutants in wastewater and air through oxidation reactions. Their catalytic activity helps in breaking down toxic compounds like volatile organic compounds (VOCs) and other industrial pollutants.

CO Oxidation: Pd-based catalysts, especially PdO@Pd, are employed for the removal of carbon monoxide in air purification systems and in vehicle exhaust treatment.