Please use this identifier to cite or link to this item: http://hdl.handle.net/11189/6578
Title: Large Scale Screening of Southern African Plant Extracts for the Green Synthesis of Gold Nanoparticles Using Microtitre-Plate Method
Authors: Elbagory Abdulrahman M 
Cupido Christopher N 
Meyer Mervin 
Hussein Ahmed A 
Keywords: green nanotechnology;gold nanoparticles;biosynthesis;high resolution transmission electron microscopy;Cape flora
Issue Date: 2016
Publisher: MDPI
Source: Elbagory, AM; Cupido, CN; Meyer, M; Hussein, AA. Large Scale Screening of Southern African Plant Extracts for the Green Synthesis of Gold Nanoparticles Using Microtitre-Plate Method. Molecules 2016, 21, 1498.
Journal: Molecules 
Abstract: The preparation of gold nanoparticles (AuNPs) involves a variety of chemical and physical methods. These methods use toxic and environmentally harmful chemicals. Consequently, the synthesis of AuNPs using green chemistry has been under investigation to develop eco-friendly nanoparticles. One approach to achieve this is the use of plant-derived phytochemicals that are capable of reducing gold ions to produce AuNPs. The aim of this study was to implement a facile microtitre-plate method to screen a large number of aqueous plant extracts to determine the optimum concentration (OC) for the bio-synthesis of the AuNPs. Several AuNPs of different sizes and shapes were successfully synthesized and characterized from 17 South African plants. The characterization was done using Ultra Violet-Visible Spectroscopy, Dynamic Light Scattering, High Resolution Transmission Electron Microscopy and Energy-Dispersive X-ray Spectroscopy. We also studied the effects of temperature on the synthesis of the AuNPs and showed that changes in temperatures affect the size and dispersity of the generated AuNPs. We also evaluated the stability of the synthesized AuNPs and showed that some of them are stable in biological buffer solutions.
Description: Article
URI: http://hdl.handle.net/11189/6578
DOI: https://doi.org/10.3390/molecules21111498
Appears in Collections:Appsc - Journal Articles (DHET subsidised)

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