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

Published online by Cambridge University Press:  17 July 2018

Kavita Meduri Open the ORCID record for Kavita Meduri [Opens in a new window] ,
Candice Stauffer ,
Wen Qian ,
Otto Zietz ,
Andrew Barnum ,
Graham O’Brien Johnson ,
Dimin Fan ,
Weixiao Ji ,
Changwen Zhang  and
Paul Tratnyek
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Kavita Meduri
Affiliation:
Department of Mechanical and Materials Engineering, Portland State University, Portland, Oregon 97201, USA
Candice Stauffer
Affiliation:
Department of Physics, Portland State University, Portland, Oregon 97201, USA
Wen Qian
Affiliation:
Department of Mechanical & Materials Engineering, University of Nebraska-Lincoln, Lincoln, Nebraska 68588, USA
Otto Zietz
Affiliation:
Department of Mechanical and Materials Engineering, Portland State University, Portland, Oregon 97201, USA
Andrew Barnum
Affiliation:
Department of Physics, Portland State University, Portland, Oregon 97201, USA
Graham O’Brien Johnson
Affiliation:
School of Public Health, Oregon Health and Science University, Portland, Oregon 97239, USA
Dimin Fan
Affiliation:
School of Public Health, Oregon Health and Science University, Portland, Oregon 97239, USA
Weixiao Ji*
Affiliation:
School of Physics and Technology, University of Jinan, Jinan 250022, China
Changwen Zhang
Affiliation:
School of Physics and Technology, University of Jinan, Jinan 250022, China
Paul Tratnyek
Affiliation:
School of Public Health, Oregon Health and Science University, Portland, Oregon 97239, USA
Jun Jiao*
Affiliation:
Department of Mechanical and Materials Engineering, Portland State University, Portland, Oregon 97201, USA; and Department of Physics, Portland State University, Portland, Oregon 97201, USA
*
a)Address all correspondence to this author. e-mail: [email protected]
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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.

Keywords

catalyticpalladiumgold
Type
Article
Information
Journal of Materials Research , Volume 33 , Issue 16 , 28 August 2018 , pp. 2404 - 2413
Copyright
Copyright © Materials Research Society 2018 

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Footnotes

b)

Present address: Oak Ridge Institute for Science and Education Fellow, Office of Superfund Remediation and Technology Innovation, U.S. Environmental Protection Agency, Arlington, Virginia 22201, USA.

References

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