Colloidal Synthesis of Silver Nanoprisms in Aqueous Medium: Influence of Chemical Compounds in UV/Vis Absorption Spectra

Josivandro N. Silva, Jamil Saade, Patricia M. A. Farias, Eduardo Henrique Lago Falcão

Graduate Program on Materials Science (PGMTR), Federal University of Pernambuco (UFPE), Recife, Brazil.
Research Group on Nanostructures and Biological Interfaces (NIB), Federal University of Pernambuco (UFPE), Recife, Brazil;Graduate Program on Materials Science (PGMTR), Federal University of Pernambuco (UFPE), Recife, Brazil.

DOI: 10.4236/anp.2013.23030                

Abstract

In this work we explore the influence of the factors that affect the formation of silver nanoprisms (AgNPs) with distinct size and size distribution as well as the most intense absorption peak shift. Box-Behnken design analysis was applied to optimize the production of silver nanoprism via colloidal synthesis. The analysis of the responses was based on the nanoprisms plasmon peak wavelength related to in-plane dipole (tunable band) at λ_max. ≥ 420 nm. The obtained results indicate that Silver ion is the main variable for the tuning of the size and the Localized Surface Plasmon Resonance (LSPR) frequency. By using the Box-Behnken design it was possible to synthesize nanoparticles with a predictable size and to establish a rigorous control of the plasmon frequency at the range of 600 up to 800 nm.

Keywords

Silver Nanoprisms; Localized Surface Plasmon Resonance; Box-Behnken Design

Conflicts of Interest

The authors declare no conflicts of interest.

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