Nano Archive

One-Pot Silver Nanoring Synthesis

Drogat, Nicolas and Granet, Robert and Sol, Vincent and Krausz, Pierre (2010) One-Pot Silver Nanoring Synthesis. NANOSCALE RESEARCH LETTERS, 5 (3). pp. 566-569. ISSN 1931-7573 (Print) 1556-276X (Online)

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Official URL: http://www.springerlink.com/content/gn46m670763048...

Abstract

Silver colloidal nanorings have been synthesized by reducing silver ions with NaBH4 in trisodium citrate buffers. pH increase, by addition of NaOH, was used to speed up reduction reaction. The UV–vis absorption spectra of resulting silver nanorings showed two peaks accounting for transverse and longitudinal surface plasmon resonance, at ≈400 nm, and between 600 and 700 nm, respectively. The shapes of these silver nanoparticles (nanorings) depended on AgNO3/NaBH4 ratio, pH and reaction temperature. Particles were analysed by transmission electron microscopy, scanning electron microscopy and X-ray diffraction. A reaction pathway is proposed to explain silver nanoring formation.

Item Type:Article
Subjects:Material Science > Nanofabrication processes and tools
Material Science > Nanochemistry
ID Code:8799
Deposited By:M T V
Deposited On:20 Apr 2010 15:51
Last Modified:20 Apr 2010 15:51

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