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Biosynthesis of silver nanoparticles using brown marine macroalga, Sargassum muticum aqueous extract


Azizi, Susan and Namvar, Farideh and Mahdavi, Mahnaz and Ahmad @ Ayob, Mansor and Mohamad, Rosfarizan (2013) Biosynthesis of silver nanoparticles using brown marine macroalga, Sargassum muticum aqueous extract. Materials, 6 (12). pp. 5942-5950. ISSN 1996-1944

Abstract / Synopsis

Biological synthesis of nanoparticles is a relatively new emerging field of nanotechnology which has economic and eco-friendly benefits over chemical and physical processes of synthesis. In the present work, for the first time, the brown marine algae Sargassum muticum (S. muticum) aqueous extract was used as a reducing agent for the synthesis of nanostructure silver particles (Ag-NPs). Structural, morphological and optical properties of the synthesized nanoparticles have been characterized systematically by using FTIR, XRD, TEM and UV–Vis spectroscopy. The formation of Ag-NPs was confirmed through the presence of an intense absorption peak at 420 nm using a UV–visible spectrophotometer. A TEM image showed that the particles are spherical in shape with size ranging from 5 to 15 nm. The nanoparticles were crystalline in nature. This was confirmed by the XRD pattern. From the FTIR results, it can be seen that the reduction has mostly been carried out by sulphated polysaccharides present in S. muticum.

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Additional Metadata

Item Type: Article
Divisions: Faculty of Biotechnology and Biomolecular Sciences
Faculty of Science
Institute of Tropical Forestry and Forest Products
DOI Number: 10.3390/ma6125942
Publisher: MDPI
Keywords: Biosynthesis; Marine algae; Sargassum muticum; Silver nanoparticles
Depositing User: Nabilah Mustapa
Date Deposited: 22 Apr 2016 15:44
Last Modified: 22 Apr 2016 15:44
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