Ultrasonically Assisted Synthesis of 3D Hierarchical Silver Microstructures
| Autor: | Alexander Eychmüller, Hongjun Chen, Ellen Kern, Christoph Ziegler |
|---|---|
| Rok vydání: | 2009 |
| Předmět: |
chemistry.chemical_classification
Aqueous solution Materials science Sonication Nanotechnology Polymer Microstructure Environmentally friendly Surfaces Coatings and Films Electronic Optical and Magnetic Materials symbols.namesake General Energy Template chemistry symbols Physical and Theoretical Chemistry Raman scattering |
| Zdroj: | The Journal of Physical Chemistry C. 113:19258-19262 |
| ISSN: | 1932-7455 1932-7447 |
| Popis: | In this paper, we report on a facile, environmentally friendly, and ultrasonically assisted route to synthesis of three-dimensional (3D) hierarchical silver microstructures. This is achieved without the use of any templates, surfactants, or polymers. By reducing [Ag(NH3)2]+ with H2O2 in an aqueous solution, 3D flowerlike silver microstructures (FSMs) are formed within a few minutes. It is found that the duration of sonication and the quantity of H2O2 play important roles in the formation of the 3D FSMs. The addition of citrate as a protecting agent changes the morphology of the products into that of 3D cauliflower-like silver microstructures (CSMs). Due to their large surface areas, these 3D hierarchical silver microstructures may find use as substrates for surface-enhanced Raman scattering applications. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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