Abstract
The polypyrrole (PPy)/graphene oxide (GO) composite hydrogels with hierarchical porous structures were fabricated by one-step self-assembly method. The static oxidation polymerization of pyrrole monomer in GO aqueous solution resulted in the formation of three-dimensional (3D) PPy/GO composite hydrogels, which consisted of one-dimensional PPy nanofibers and two-dimensional GO nanosheets. The as-prepared composite hydrogels exhibited shrinking–swelling behavior with cycles of suction and water-supplying. The effects of GO nanosheets content on the swelling properties were investigated. Results showed that the well-dispersed GO nanosheets in the hydrogel networks resulted in a significant improvement in water absorbencies of the hydrogels. PPy/GO composite hydrogels exhibited unobvious variation in the water absorbency even in saline solutions. Such excellent properties in water absorbencies endow the conducting 3D PPy/GO composite hydrogels with great potential applications in electrochemical sensors or controlled release.
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Acknowledgments
The work was supported by the New Century Excellent Talents in University of Ministry of Education of China (NCET-10-0157), Outstanding Youth Scientific Foundation of Hubei Province (2012FFA021) and Outstanding Youth Scientific Innovation Team of Colleges and Universities in Hubei Province (T201406). The authors (P. Sun and Y. Wang) thank for the support of the 9th President Fund for Student of WIT (2014026). The authors also thank Prof. Dongshan Zhou (Nanjing University) for the helpful discussion.
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She, X., Sun, P., Yu, X. et al. Fabrication of 3D Polypyrrole/Graphene Oxide Composite Hydrogels with High Performance Swelling Properties. J Inorg Organomet Polym 24, 884–889 (2014). https://doi.org/10.1007/s10904-014-0062-8
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DOI: https://doi.org/10.1007/s10904-014-0062-8