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Biosupported bimetallic Pd-Au nanocatalysts for dechlorination of environmental contaminants

Simon De Corte UGent, Tom Hennebel UGent, Jeffrey P Fitts, Tom Sabbe UGent, Vitaliy Bliznuk UGent, STEPHANIE VERSCHUERE, Daniel van der Lelie, Willy Verstraete UGent and Nico Boon UGent (2011) ENVIRONMENTAL SCIENCE & TECHNOLOGY. 45(19). p.8506-8513
abstract
Biologically produced monometallic palladium nanoparticles (bio-Pd) have been shown to catalyze the dehalogenation of environmental contaminants, but fail to efficiently catalyze the degradation of other important recalcitrant halogenated compounds. This study represents the first report of biologically produced bimetallic Pd/Au nanoparticle catalysts. The obtained catalysts were tested for the dechlorination of diclofenac and trichlorethylene. When aqueous bivalent Pd(II) and trivalent Au(III) ions were both added to concentrations of 50 mg L(-1) and reduced simultaneously by Shewanella oneidensis in the presence of H(2), the resulting cell-associated bimetallic nanoparticles (bio-Pd/Au) were able to dehalogenate 78% of the initially added diclofenac after 24 h; in comparison, no dehalogenation was observed using monometallic bio-Pd or bio-Au. Other catalyst-synthesis strategies did not show improved dehalogenation of TCE and diclofenac compared with bio-Pd. Synchrotron-based X-ray diffraction, (scanning) transmission electron microscopy and energy dispersive X-ray spectroscopy indicated that the simultaneous reduction of Pd and Au supported on cells of S. oneidensis resulted in the formation of a unique bimetallic crystalline structure. This study demonstrates that the catalytic activity and functionality of possibly environmentally more benign biosupported Pd-catalysts can be improved by coprecipitation with Au.
Please use this url to cite or link to this publication:
author
organization
year
type
journalArticle (original)
publication status
published
subject
keyword
REMOVAL, REACTOR, OXYGEN REDUCTION, SHEWANELLA-ONEIDENSIS, PALLADIUM NANOPARTICLES, REDUCTIVE DECHLORINATION, BIOCATALYTIC DECHLORINATION, TRICHLOROETHENE HYDRODECHLORINATION, NANOPARTICLE CATALYSTS, METAL
journal title
ENVIRONMENTAL SCIENCE & TECHNOLOGY
Environ. Sci. Technol.
volume
45
issue
19
pages
8506 - 8513
Web of Science type
Article
Web of Science id
000295245600075
JCR category
ENVIRONMENTAL SCIENCES
JCR impact factor
5.228 (2011)
JCR rank
8/203 (2011)
JCR quartile
1 (2011)
ISSN
0013-936X
DOI
10.1021/es2019324
project
Biotechnology for a sustainable economy (Bio-Economy)
language
English
UGent publication?
yes
classification
A1
copyright statement
I have transferred the copyright for this publication to the publisher
id
1980452
handle
http://hdl.handle.net/1854/LU-1980452
date created
2012-01-09 10:51:00
date last changed
2017-03-09 12:39:38
@article{1980452,
  abstract     = {Biologically produced monometallic palladium nanoparticles (bio-Pd) have been shown to catalyze the dehalogenation of environmental contaminants, but fail to efficiently catalyze the degradation of other important recalcitrant halogenated compounds. This study represents the first report of biologically produced bimetallic Pd/Au nanoparticle catalysts. The obtained catalysts were tested for the dechlorination of diclofenac and trichlorethylene. When aqueous bivalent Pd(II) and trivalent Au(III) ions were both added to concentrations of 50 mg L(-1) and reduced simultaneously by Shewanella oneidensis in the presence of H(2), the resulting cell-associated bimetallic nanoparticles (bio-Pd/Au) were able to dehalogenate 78\% of the initially added diclofenac after 24 h; in comparison, no dehalogenation was observed using monometallic bio-Pd or bio-Au. Other catalyst-synthesis strategies did not show improved dehalogenation of TCE and diclofenac compared with bio-Pd. Synchrotron-based X-ray diffraction, (scanning) transmission electron microscopy and energy dispersive X-ray spectroscopy indicated that the simultaneous reduction of Pd and Au supported on cells of S. oneidensis resulted in the formation of a unique bimetallic crystalline structure. This study demonstrates that the catalytic activity and functionality of possibly environmentally more benign biosupported Pd-catalysts can be improved by coprecipitation with Au.},
  author       = {De Corte, Simon and Hennebel, Tom and Fitts, Jeffrey P and Sabbe, Tom and Bliznuk, Vitaliy and VERSCHUERE, STEPHANIE and van der Lelie, Daniel and Verstraete, Willy and Boon, Nico},
  issn         = {0013-936X},
  journal      = {ENVIRONMENTAL SCIENCE \& TECHNOLOGY},
  keyword      = {REMOVAL,REACTOR,OXYGEN REDUCTION,SHEWANELLA-ONEIDENSIS,PALLADIUM NANOPARTICLES,REDUCTIVE DECHLORINATION,BIOCATALYTIC DECHLORINATION,TRICHLOROETHENE HYDRODECHLORINATION,NANOPARTICLE CATALYSTS,METAL},
  language     = {eng},
  number       = {19},
  pages        = {8506--8513},
  title        = {Biosupported bimetallic Pd-Au nanocatalysts for dechlorination of environmental contaminants},
  url          = {http://dx.doi.org/10.1021/es2019324},
  volume       = {45},
  year         = {2011},
}

Chicago
De Corte, Simon, Tom Hennebel, Jeffrey P Fitts, Tom Sabbe, Vitaliy Bliznuk, STEPHANIE VERSCHUERE, Daniel van der Lelie, Willy Verstraete, and Nico Boon. 2011. “Biosupported Bimetallic Pd-Au Nanocatalysts for Dechlorination of Environmental Contaminants.” Environmental Science & Technology 45 (19): 8506–8513.
APA
De Corte, S., Hennebel, T., Fitts, J. P., Sabbe, T., Bliznuk, V., VERSCHUERE, S., van der Lelie, D., et al. (2011). Biosupported bimetallic Pd-Au nanocatalysts for dechlorination of environmental contaminants. ENVIRONMENTAL SCIENCE & TECHNOLOGY, 45(19), 8506–8513.
Vancouver
1.
De Corte S, Hennebel T, Fitts JP, Sabbe T, Bliznuk V, VERSCHUERE S, et al. Biosupported bimetallic Pd-Au nanocatalysts for dechlorination of environmental contaminants. ENVIRONMENTAL SCIENCE & TECHNOLOGY. 2011;45(19):8506–13.
MLA
De Corte, Simon, Tom Hennebel, Jeffrey P Fitts, et al. “Biosupported Bimetallic Pd-Au Nanocatalysts for Dechlorination of Environmental Contaminants.” ENVIRONMENTAL SCIENCE & TECHNOLOGY 45.19 (2011): 8506–8513. Print.