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Materials 2016, 9(8), 653; doi:10.3390/ma9080653

Hollow Palladium Nanoparticles Facilitated Biodegradation of an Azo Dye by Electrically Active Biofilms

1
Division of Biological and Environmental Science & Engineering, King Abdullah University of Science and Technology, Thuwal 23955-6900, Saudi Arabia
2
Department of Chemical Engineering, Birla Institute of Technology & Science, Pilani-Dubai Campus, Dubai International Academic City, P.O. Box No. 345055, Dubai, UAE
*
Author to whom correspondence should be addressed.
Academic Editor: Deepak Pant
Received: 8 June 2016 / Revised: 26 July 2016 / Accepted: 1 August 2016 / Published: 4 August 2016
(This article belongs to the Special Issue Advances in Renewable Energy Conversion Materials)
View Full-Text   |   Download PDF [6728 KB, uploaded 4 August 2016]   |  

Abstract

Dye wastewater severely threatens the environment due to its hazardous and toxic effects. Although many methods are available to degrade dyes, most of them are far from satisfactory. The proposed research provides a green and sustainable approach to degrade an azo dye, methyl orange, by electrically active biofilms (EABs) in the presence of solid and hollow palladium (Pd) nanoparticles. The EABs acted as the electron generator while nanoparticles functioned as the electron carrier agents to enhance degradation rate of the dye by breaking the kinetic barrier. The hollow Pd nanoparticles showed better performance than the solid Pd nanoparticles on the dye degradation, possibly due to high specific surface area and cage effect. The hollow cavities provided by the nanoparticles acted as the reaction centers for the dye degradation. View Full-Text
Keywords: electrically active biofilm; dye degradation; hollow nanoparticles; catalysis electrically active biofilm; dye degradation; hollow nanoparticles; catalysis
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Kalathil, S.; Chaudhuri, R.G. Hollow Palladium Nanoparticles Facilitated Biodegradation of an Azo Dye by Electrically Active Biofilms. Materials 2016, 9, 653.

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