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ISRN Nanomaterials
Volume 2012 (2012), Article ID 376940, 8 pages
http://dx.doi.org/10.5402/2012/376940
Research Article

Zinc-Salt-Mediated Synthesis, Growth Kinetic, and Shaped Evolution of Silver Nanoparticles

1Department of Chemistry, University of Agriculture, Abeokuta, Nigeria
2Center for Energy Research and Development, Obafemi Awolowo University, Ile-Ife, Nigeria
3Nanosciences Laboratories, Materials Research Department, iThemba LABS, Somerset West 7129, South Africa
4National Agency for Science and Engineering Infrastructure, Idu Industrial Area, Abuja, Nigeria
5Department of Physics, University of Nigeria, Nsukka, Nigeria

Received 12 August 2012; Accepted 12 September 2012

Academic Editors: N. R. Jana and S.-H. Kim

Copyright © 2012 E. O. Dare et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

We report the synthesis of various shaped silver nanoparticles mediated by ZnCl2 salt. It has been demonstrated that the salt, PVP/AgNO3 mole ratio, and the type of polyol (EG, DEG,and GL) significantly determined twinning probability, which is an index of silver seed growth origin. High twining probability arising from low PVP/Ag+ ratio and 50 mole% salt favours 1D grown nanowires and nanorods, whereas low twining amidst high mole% salt (150) in DEG offered 2D grown nanoflakes and nanosheets. Other shaped silver nanoparticles have been found. Accidentally, we arrived at a core-shell heterostructure of Ag-ZnO nanocomposite with Ag core enrichment when mole% of the salt was made up to 300. Growth kinetic of nanosphere obtained was monitored, and effect of salt mediation was found crucial. Structural evolution of shaped Ag nanoparticles and nanocomposites have been monitored using XRD, SEM, EDX, TEM, and UV/vis.