Non-covalent functionalization of graphene sheets by sulfonated polyaniline
1Department of Chemistry and the Key Laboratory of Bio-organic Phosphorous Chemistry and Chemical Biology, Tsinghua University, 100084 Beijing, PR China.
Chemical Communications (Cambridge, England)
|March 19, 2009
Summary
Sulfonated polyaniline (SPANI) functionalization stably disperses graphene in water. The resulting SPANI-graphene composite film exhibits enhanced electrochemical stability and catalytic activity.
Area of Science:
- Materials Science
- Electrochemistry
- Polymer Chemistry
Background:
- Graphene's unique properties are hindered by poor dispersibility in aqueous solutions.
- Developing stable graphene dispersions is crucial for advanced material applications.
Purpose of the Study:
- To achieve stable aqueous dispersion of graphene sheets.
- To investigate the electrochemical properties of graphene functionalized with sulfonated polyaniline (SPANI).
Main Methods:
- Graphene sheets were functionalized with SPANI.
- The SPANI-functionalized graphene was dispersed in water.
- Composite films were prepared and characterized for electrochemical performance.
Main Results:
- Stable dispersion of graphene in water was achieved through SPANI functionalization.
- The SPANI-graphene composite film demonstrated improved electrochemical stability.
- Enhanced electrocatalytic activity was observed in the composite film.
Conclusions:
- SPANI is an effective agent for stabilizing graphene in water.
- The SPANI-graphene composite offers superior electrochemical performance compared to unmodified graphene.
- This work paves the way for utilizing graphene in aqueous electrochemical systems.
