Abstract
We have synthesized silver nanoparticles from silver nitrate solutions using extracts of Rumex hymenosepalus, a plant widely found in a large region in North America, as reducing agent. This plant is known to be rich in antioxidant molecules which we use as reducing agents. Silver nanoparticles grow in a single-step method, at room temperature, and with no addition of external energy. The nanoparticles have been characterized by ultraviolet-visible spectroscopy and transmission electron microscopy, as a function of the ratio of silver ions to reducing agent molecules. The nanoparticle diameters are in the range of 2 to 40 nm. High-resolution transmission electron microscopy and fast Fourier transform analysis show that two kinds of crystal structures are obtained: face-centered cubic and hexagonal.
Highlights
The synthesis of nanomaterials is of current interest due to their wide variety of applications in fields such as electronics [1,2,3,4], photonics [5,6,7], catalysis [8,9,10], medicine [11,12,13,14,15], etc
The flask was stored at room temperature (T = 25°C), and the extraction was allowed to proceed during several days; the visual appearance of the liquid was monitored on a daily basis
We have prepared silver nanoparticles using extracts of R. hymenosepalus, a plant abundantly found in North Mexico and in the south of the USA, as reducing agent
Summary
The synthesis of nanomaterials is of current interest due to their wide variety of applications in fields such as electronics [1,2,3,4], photonics [5,6,7], catalysis [8,9,10], medicine [11,12,13,14,15], etc. Most of the applications are due to the fact that matter at the nanometer scale has different properties as compared with the bulk state. For this reason, many research groups around the world are trying new methods of synthesis of different materials at the nanoscale. The different preparation methods have been successful in the synthesis
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