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Ali Akbar Ashkarran

Ali Akbar Ashkarran

Academic rank: Assistant Professor
ORCID:
Education: PhD.
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Phone: 01135302485

Research

Title
Shape control synthesis of triangular silver nanostructures
Type
Presentation
Keywords
Shape control Silver nanostructure Triangle
Year
2015
Researchers Ali Akbar Ashkarran ، Maryam Derakhshi

Abstract

Triangular silver nanostructures were prepared by photoinducing of spherical silver nanoparticles (NPs) with an average diameter of 10 nm. Transmission electron microscopy (TEM) and ultra violet visible (UV-Vis) spectroscopy were used to characterize silver triangles. TEM images indicated that formation of triangular structures depends on the intensity of light source.Spherical silver NPswere first synthesized by reducing silver nitrate (AgNO3) with sodium borohydride (NaBH4) in the presence of polyvinyl pyrrolidon (PVP) and trisodium citrate (Na3C6H5O7). We have found that uniform triangular silver nanostructures can be obtained using an appropriate visible-light illumination to the primary spherical silver NPs. The effect of intensity of visible-light source on the geometry and size distribution of silver triangles was investigated. It was found that formation of triangular structures strongly depends on the intensity of the light illumination.