Rapid, Reversible Preparation of Size-Controllable Silver Nanoplates by Chemical Redox
- 15 June 2010
- journal article
- Published by American Chemical Society (ACS) in Langmuir
- Vol. 26 (14), 11621-11623
- https://doi.org/10.1021/la1016627
Abstract
Citrate-stabilized silver nanoplates (AgNPs) were prepared using a seed-mediated growth method. The AgNP shape and size were controlled using potassium permanganate (KMnO4) as an oxidant and ascorbic acid (AA) as a reductant. Using KMnO4, 42 nm nanoplates were changed to 22.9 nm nanodisks because of the release of silver ions. Using AA, the oxidized AgNPs were resynthesized to their initial plate form. These results are similar to those obtained using photoinduced shape control of silver nanoparticles; however, the chemical oxidation/reduction method can control the shape of AgNPs, both quantitatively and reversibly. In addition, because of redox-related visible spectral changes, solution color varies with AgNPs size. That feature may be useful in various applications.Keywords
This publication has 25 references indexed in Scilit:
- Potential Sensing Platform of Silver Nanoparticles Embedded in Functionalized Silicate Shell for Nitroaromatic CompoundsAnalytical Chemistry, 2009
- Controlled Particle Growth of Silver Sols through the Use of Hydroquinone as a Selective Reducing AgentLangmuir, 2009
- Ink‐jet Printing and Microwave Sintering of Conductive Silver TracksAdvanced Materials, 2006
- Kinase-Catalyzed Modification of Gold Nanoparticles: A New Approach to Colorimetric Kinase Activity ScreeningJournal of the American Chemical Society, 2006
- Synergistic Effect in an Au−Ag Alloy Nanocatalyst: CO OxidationThe Journal of Physical Chemistry B, 2004
- Exploitation of Localized Surface Plasmon ResonanceAdvanced Materials, 2004
- Gold Nanoparticles: Assembly, Supramolecular Chemistry, Quantum-Size-Related Properties, and Applications toward Biology, Catalysis, and NanotechnologyChemical Reviews, 2003
- The Optical Properties of Metal Nanoparticles: The Influence of Size, Shape, and Dielectric EnvironmentThe Journal of Physical Chemistry B, 2002
- Formation of Colloidal Silver Nanoparticles: Capping Action of CitrateThe Journal of Physical Chemistry B, 1999
- Near-Field Surface-Enhanced Raman Spectroscopy on Single Silver NanoparticlesAnalytical Chemistry, 1997