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Journal of Nanomaterials
Volume 2015 (2015), Article ID 136164, 12 pages
http://dx.doi.org/10.1155/2015/136164
Research Article

Catalytic Reductive Degradation of Methyl Orange Using Air Resilient Copper Nanostructures

1National Centre of Excellence in Analytical Chemistry, University of Sindh, Jamshoro 76080, Pakistan
2Interface Analysis Centre, School of Physics, University of Bristol, Bristol BS8 1TL, UK
3Department of Chemistry, College of Science, King Saud University, Riyadh 11451, Saudi Arabia
4Chemistry Department, Faculty of Science, Sohag University, Sohag 82524, Egypt
5International Centre for Chemical and Biological Sciences, H.E.J. Research Institute of Chemistry University of Karachi, Karachi 75500, Pakistan

Received 16 November 2014; Revised 26 December 2014; Accepted 27 December 2014

Academic Editor: Xingcai Wu

Copyright © 2015 Razium Ali Soomro et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

The study describes the application of oxidation resistant copper nanostructures as an efficient heterogeneous catalyst for the treatment of organic dye containing waste waters. Copper nanostructures were synthesized in an aqueous environment using modified surfactant assisted chemical reduction route. The synthesized nanostructures have been characterized by UV-Vis, Fourier transform infrared spectroscopy FTIR spectroscopy, Atomic force microscopy (AFM), Scanning Electron Microscopy (SEM), and X-ray diffractometry (XRD). These surfactant capped Cu nanostructures have been used as a heterogeneous catalyst for the comparative reductive degradation of methyl orange (MO) in the presence of sodium borohydride (NaBH4) used as a potential reductant. Copper nanoparticles (Cu NPs) were found to be more efficient compared to copper nanorods (Cu NRds) with the degradation reaction obeying pseudofirst order reaction kinetics. Shape dependent catalytic efficiency was further evaluated from activation energy () of reductive degradation reaction. The more efficient Cu NPs were further employed for reductive degradation of real waste water samples containing dyes collected from the drain of different local textile industries situated in Hyderabad region, Pakistan.