@article{120496,
  author = {S. Zhang and Y. Y. Shao and J. Liu and I.A. Aksay and Y. H. Lin},
  title = {Graphene-Polypyrrole Nanocomposite as a Highly Efficient and Low Cost Electrically Switched Ion Exchanger for Removing ClO4- from Wastewater},
  abstract = { Perchlorate (ClO4-) contamination is a widespread concern affecting water utilities. In the present study, functionalized graphene sheets were employed as the scaffold to synthesize a novel graphene-polypyrrole (Ppy) nanocomposite, which served as an excellent electrically switched ion exchanger for perchlorate removal. Scanning electron microscopy and electrochemical measurements showed that the 3D nanostructured graphene-Ppy nanocomposite exhibited a significantly improved uptake capacity for ClO4- compared with Ppy film alone. X-ray photoelectron spectroscopy confirmed the uptake and release process of ClO4- in graphene-Ppy nanocomposite. In addition, the presence of graphene substrate resulted in high stability of graphene-Ppy nanocomposite during potential cycling. The present work provides a promising method for large scale water treatment. },
  year = {2011},
  journal = {ACS Applied Materials \& Interfaces},
  volume = {3},
  pages = {3633-3637},
  month = {09/2011},
  isbn = {1944-8244},
  language = {eng},
}