NSTI Nanotech 2009

Catalytic Remediation of Perchloroethylene by Pd-on-Au Nanoparticles

R.J. Smith, M.S. Wong
Rice University, US

Keywords: catalysis, PCE, nanoparticle, water remediation


Perchloroethylene, the main dry cleaning solvent and widespread environmental contaminate, has been catalytically hydrodechlorinated by palladium-on-gold bimetallic nanoparticles to non-toxic ethane. The intimate contact of palladium atoms on the surface of gold nanoparticles greatly enhances the catalyst activity over other traditional palladium only catalysts such as palladium nanoparticles and palladium on alumina. Catalytic degradation is an intriguing alternative to current costly remediation techniques, such as air stripping and carbon adsorption, both of which require further heat treatments to ensure total degradation to non-toxic substances.
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