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Updated: Jun 12, 2026
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Synthesis, Characterization, and Functionalization of Hybrid Au/CdS and Au/ZnS Core/Shell Nanoparticles
Published on: March 2, 2016
Core-shell Au@(TiO(2), SiO(2)) nanoparticles with tunable morphology.
D Djoumessi Lekeufack1, A Brioude, A Mouti
1Laboratoire des Multimatériaux et Interfaces (UMR CNRS 5615), Université Lyon 1, Université de Lyon, 43 Bd du 11 Novembre 1918, Villeurbanne Cedex, France.
Chemical Communications (Cambridge, England)
|May 21, 2010
Summary
Researchers developed a new method to create asymmetric core-shell nanoparticles. By controlling precursor ratios, they achieved unique acorn-like and raspberry-like structures with displaced cores.
Area of Science:
- Materials Science
- Nanotechnology
- Inorganic Chemistry
Background:
- Core-shell nanoparticles offer tunable properties for various applications.
- Achieving controlled asymmetry in core-shell structures remains a synthetic challenge.
Purpose of the Study:
- To develop a novel method for breaking the symmetry of metallic core/metal oxide shell nanoparticles.
- To control the morphology and internal structure of these core-shell systems.
Main Methods:
- Utilized a modified Stöber method for nanoparticle synthesis.
- Varied the ratio of titanium dioxide (TiO2) precursor to silica precursor.
- Investigated the effect of precursor ratios on particle morphology.
Main Results:
- Successfully broke the symmetry of gold core/metal oxide shell nanoparticles.
- Achieved eccentric positioning of the gold core within the shell.
- Generated distinct morphologies, including acorn-like and raspberry-like structures.
Conclusions:
- The modified Stöber approach provides a versatile route to asymmetric core-shell nanoparticles.
- Precursor ratio is a critical parameter for controlling nanoparticle morphology and core displacement.
- The developed method enables the synthesis of novel nanostructures with potential applications in catalysis and sensing.
