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Published in: Journal of Nanoparticle Research 4/2013

01-04-2013 | Research Paper

Reduction of hexavalent chromium with colloidal and supported palladium nanocatalysts

Authors: Weixia Tu, Kunjing Li, Xiaohui Shu, William W. Yu

Published in: Journal of Nanoparticle Research | Issue 4/2013

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Abstract

The Cr(VI) pollutants are known to cause serious harm to the environment and human health. Chemical reduction is one of the efficient methods to eliminate the Cr(VI) pollutants. We synthesized polyvinylpyrrolidone-stabilized palladium (PVP-Pd) colloidal nanoparticles to catalytically reduce Cr(VI). The PVP-Pd colloidal nanocatalysts were active on the complete reduction of Cr(VI) to Cr(III) with a rate of 22.2 molCr/(molPd min) or a turn-over frequency (TOF) of 1,329 h−1 at pH 4.0 and 45 °C. Magnetic Fe3O4 support was used for recycling the palladium nanocatalysts. The as-prepared Pd–Fe3O4 catalyst was easy to be separated from the reaction system by simply applying an external magnet and it exhibited efficient and stable reduction performance even after eight recycles.

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Metadata
Title
Reduction of hexavalent chromium with colloidal and supported palladium nanocatalysts
Authors
Weixia Tu
Kunjing Li
Xiaohui Shu
William W. Yu
Publication date
01-04-2013
Publisher
Springer Netherlands
Published in
Journal of Nanoparticle Research / Issue 4/2013
Print ISSN: 1388-0764
Electronic ISSN: 1572-896X
DOI
https://doi.org/10.1007/s11051-013-1593-6

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