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Multifunctional graphene/platinum/Nafion hybrids via ice templating
Luis Estevez1, Antonios Kelarakis, Qianming Gong
1Department of Materials Science and Engineering, Cornell University, Ithaca, New York 14853, USA.
Journal of the American Chemical Society
|April 6, 2011
Summary
We synthesized multifunctional hybrids with electrical and ionic conductivity, porosity, and catalytic activity. These materials combine graphene-supported platinum nanoparticles on a Nafion scaffold for advanced applications.
Area of Science:
- Materials Science
- Nanotechnology
- Electrochemistry
Background:
- Developing advanced materials with combined functionalities is crucial for energy and environmental applications.
- Multifunctional materials require precise control over structure and composition.
Purpose of the Study:
- To synthesize novel multifunctional hybrids combining electrical and ionic conductivity, porosity, and catalytic activity.
- To create these hybrids in both film and bulk forms.
Main Methods:
- A two-step synthesis process involving ice templation and mild reduction.
- Ice templation of Nafion, graphite oxide, and chloroplatinic acid to create a porous network.
- Mild reduction using hydrazine or monosodium citrate to form graphene-supported platinum nanoparticles on a Nafion scaffold.
Main Results:
- Successful synthesis of multifunctional hybrids in film and bulk forms.
- The hybrids exhibit combined electrical and ionic conductivity, porosity, and catalytic activity.
- Graphene-supported platinum nanoparticles were successfully integrated onto a Nafion scaffold.
Conclusions:
- The developed synthesis method enables the creation of versatile multifunctional materials.
- These hybrids hold potential for applications requiring a combination of conductivity, porosity, and catalysis.
