Palladium and gold nanoparticles on carbon supports as highly efficient catalysts for effective removal of trichloroethylene

Kavita Meduri, Candice Stauffer, Wen Qian, Otto Zietz, Andrew Barnum, Graham O’Brien Johnson, Dimin Fan, Weixiao Ji, Changwen Zhang, Paul Tratnyek, Jun Jiao

Research output: Contribution to journalArticle

4 Scopus citations

Abstract

Palladium (Pd) and gold (Au) nanoparticles (NPs) hybridized on two types of carbon supports, graphene and granular activated carbon (GAC), were shown to be promising catalysts for the sustainable hydrodehalogenation of aqueous trichloroethylene (TCE). These catalysts are capable of degrading TCE more rapidly than commercial Pd-on-GAC catalysts. The catalysts were synthesized at room temperature without the use of any environmentally unfriendly chemicals. Pd was chosen for its catalytic potency to break down TCE, while Au acts as a strong promoter of the catalytic activity of Pd. The results indicate that both graphene and GAC are favorable supports for the NPs due to high surface-to-volume ratios, unique surface properties, and the prevention of NP aggregation. The properties of NP catalysts were characterized using electron microscopy and spectroscopy techniques. The TCE degradation results indicate that the GAC-supported catalysts have a higher rate of TCE removal than the commercial Pd-on-GAC catalyst, and the degradation rate is greatly increased when using graphene-supported samples.

Original languageEnglish (US)
Pages (from-to)1-10
Number of pages10
JournalJournal of Materials Research
DOIs
StateAccepted/In press - Jul 17 2018
Externally publishedYes

Keywords

  • catalytic
  • gold
  • palladium

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering

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  • Cite this

    Meduri, K., Stauffer, C., Qian, W., Zietz, O., Barnum, A., O’Brien Johnson, G., Fan, D., Ji, W., Zhang, C., Tratnyek, P., & Jiao, J. (Accepted/In press). Palladium and gold nanoparticles on carbon supports as highly efficient catalysts for effective removal of trichloroethylene. Journal of Materials Research, 1-10. https://doi.org/10.1557/jmr.2018.212