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Metals 2015, 5(3), 1609-1619; doi:10.3390/met5031609

Exploring the Possibilities of Biological Fabrication of Gold Nanostructures Using Orange Peel Extract

Department of Materials Science and Metallurgical Engineering, Complutense University of Madrid, Madrid 28040, Spain
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Academic Editors: Suresh Bhargava and Rahul Ram
Received: 22 July 2015 / Revised: 3 September 2015 / Accepted: 6 September 2015 / Published: 11 September 2015
(This article belongs to the Special Issue Hydrometallurgy)
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Abstract

Development of nanotechnology requires a constant innovation and improvement in many materials. The exploration of natural resources is a promising eco-friendly alternative for physical and chemical methods. In the present work, colloidal gold nanostructures were prepared using orange peel extract as a stabilizing and reducing agent. The initial pH value of the solution and the concentration of the gold precursor had an effect on the formation and morphology of nanoparticles. The method developed is environmentally friendly and allows control of nanoparticles. By controlling the pH and, especially, the gold concentration, we are able to synthesize crystalline gold nanowires using orange peel extract in the absence of a surfactant or polymer to direct nanoparticle growth, and without external seeding. UV-VIS spectroscopy, transmission electron microscopy (TEM), and X-ray diffraction (XRD) were used to characterize the nanoparticles obtained by biosynthesis. View Full-Text
Keywords: biosynthesis; nanoparticles; gold; nanowires; orange peel extract biosynthesis; nanoparticles; gold; nanowires; orange peel extract
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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. (CC BY 4.0).

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MDPI and ACS Style

Castro, L.; Blázquez, M.L.; González, F.; Muñoz, J.Á.; Ballester, A. Exploring the Possibilities of Biological Fabrication of Gold Nanostructures Using Orange Peel Extract. Metals 2015, 5, 1609-1619.

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