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Controlled morphology and dimensionality evolution of NiPd bimetallic nanostructures
Mai Maize1, Hanaa A El-Boraey2, Mohamed I Ayad2
1Department of Chemistry, Faculty of Science, Menoufia University, Shebin El-Kom 32512, Egypt; School of Chemistry and Tyndall National Institute, University College Cork, Cork T12 YN60, Ireland; AMBER Centre, Environmental Research Institute, University College Cork, Cork T23 XE10, Ireland.
Researchers developed a one-pot synthesis for tunable nickel-palladium (NiPd) nanostructures using only water. These diverse NiPd nanostructures show enhanced catalytic activity for 4-nitrophenol hydrogenation.
Area of Science:
- Materials Science
- Nanotechnology
- Catalysis
Background:
- Controlling nanostructure morphology is crucial for optimizing catalytic performance.
- Noble metal nanostructures offer unique properties for various applications.
Purpose of the Study:
- To develop a versatile, one-pot aqueous synthesis for tunable nickel-palladium (NiPd) nanostructures.
- To investigate the formation mechanisms and morphology evolution of NiPd nanostructures.
- To evaluate the catalytic performance of synthesized NiPd nanostructures.
Main Methods:
- One-pot aqueous synthesis of NiPd nanostructures at room temperature.
- Tuning morphology by adjusting HCl concentration and reaction aging time.
- Characterization of nanostructure morphology and composition.
- Anchoring NiPd nanostructures onto acid-treated activated carbon (AC).
Main Results:
- Achieved synthesis of diverse NiPd morphologies: core-shell NPs, hollow NPs, nanowire networks, and 3D nanodendrites.
- Demonstrated control over morphology via HCl concentration and aging time, influencing reduction rates and citrate protonation.
- NiPd nanostructures on AC exhibited enhanced catalytic efficiency for 4-nitrophenol hydrogenation to 4-aminophenol.
Conclusions:
- A facile and tunable aqueous synthesis method for NiPd nanostructures was established.
- The morphology of NiPd nanostructures can be precisely controlled through reaction parameters.
- Synthesized NiPd nanostructures show significant potential as efficient catalysts in chemical transformations.
