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Three-Dimensional Super-Branched PdCu Nanoarchitectures Exposed on Controlled Crystal Facets
Muhammad Iqbal1,2, Cuiling Li1, Jung Ho Kim3
1International Center for Materials Nanoarchitectonics (MANA), National Institute for Materials Science (NIMS), 1-1 Namiki, Tsukuba, Ibaraki, 305-0044, Japan.
Chemistry (Weinheim an Der Bergstrasse, Germany)
|December 2, 2016
Summary
Researchers developed a novel 3D nanoarchitecture of palladium-copper (PdCu) alloy using a simple chemical reduction method. These super-branched nanostructures exhibit enhanced electrocatalytic activity for formic acid oxidation, outperforming commercial palladium black.
Area of Science:
- Materials Science
- Nanotechnology
- Electrochemistry
Background:
- Controlled synthesis of metal nanocrystals is advanced, but creating 3D structures with specific facets remains difficult.
- Three-dimensional (3D) nanoarchitectures offer unique properties for catalysis.
Purpose of the Study:
- To develop an efficient one-pot method for synthesizing 3D nanoarchitectured palladium-copper (PdCu) alloy.
- To investigate the electrocatalytic performance of the novel 3D PdCu nanostructures.
Main Methods:
- A simple chemical reduction method was employed for synthesis.
- The resulting nanostructures were characterized for their morphology and composition.
- Electrocatalytic activity was evaluated for the formic acid oxidation reaction.
Main Results:
- A unique 3D nanoarchitecture of PdCu alloy was successfully synthesized, featuring assembled nanosized octahedral PdCu nanocrystals into super-branched structures.
- The facet-controlled PdCu super-branched nanostructures demonstrated significantly higher activity for the formic acid oxidation reaction.
- The performance exceeded that of commercially available palladium black catalyst.
Conclusions:
- The developed one-pot method provides an efficient route to novel 3D nanoarchitectured PdCu alloys.
- The facet-controlled 3D PdCu super-branched nanostructures show great promise as electrocatalysts for formic acid oxidation.
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