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Ali Akbar Ashkarran

Ali Akbar Ashkarran

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

Research

Title
Destructive Effect of Solar Light on Morphology of Colloidal Silver Nanocubes
Type
JournalPaper
Keywords
colloidal silver nanocubes solar light
Year
2016
Journal COLLOID JOURNAL
DOI
Researchers Ali Akbar Ashkarran ، Sahar Daemi ، Maryam Derakhshi

Abstract

Colloidal silver nanocubes (NCs) were successfully synthesized by reduction of silver nitrate with ethylene glycol and poly(vinylpyrrolidone) as capping agent. The effect of solar light irradiation on the formation and morphology of silver NCs was investigated. Altering of the amount of sodium sulfide was used to control the morphology and shape of primary silver seeds. Scanning electron microscopy, transmitting electron microscopy, X-ray diffraction and UV-vis spectroscopy were used to characterize silver NCs. The samples prepared under the solar light irradiation do not possess cubic shape while highly monodispersed silver NCs were obtained in dark room conditions. For dark room synthesis, a decrease of the amount of Na2S by only 10 μL resulted in formation of mixture of silver nanospheres and nanowires in addition to NCs instead of the monodispersed silver NCs. However, similar increase of the amount of sodium sulfide results in distortion of cubic geometry of particles. The results suggest that solar light has a negative effect on the shape evolution of the primary silver seeds.