Please use this identifier to cite or link to this item: https://doi.org/10.1016/j.jcis.2006.12.081
Title: Dissolution-recrystallization mechanism for the conversion of silver nanospheres to triangular nanoplates
Authors: Yang, J.
Zhang, Q.
Lee, J.Y. 
Too, H.-P. 
Keywords: Ag nanoplate
Ag nanosphere
Conversion
SDS
Issue Date: 2007
Citation: Yang, J., Zhang, Q., Lee, J.Y., Too, H.-P. (2007). Dissolution-recrystallization mechanism for the conversion of silver nanospheres to triangular nanoplates. Journal of Colloid and Interface Science 308 (1) : 157-161. ScholarBank@NUS Repository. https://doi.org/10.1016/j.jcis.2006.12.081
Abstract: A solution chemistry method for transforming polycrystalline Ag spherical particles into single crystalline triangular Ag nanoplates has been developed. The synthesis consists of three consecutive steps: (1) the synthesis of Ag nanospheres by NaBH4 reduction of AgNO3 in the presence of sodium citrate; (2) the conversion of citrate-stabilized Ag nanospheres into SDS (sodium dodecyl sulfate)-stabilized Ag nanospheres, and (3) the aging of the SDS-stabilized Ag nanospheres in 0.01 M NaCl solution. Our study indicates that the shape evolved through a Ag nanoparticle dissolution- and re-deposition process; and demonstrated the critical role of SDS in the process: SDS regulates the dynamics in the dissolved O2/Cl- etching of the Ag nanospheres and the reduction of the released Ag+ by citrate ions in the same solution. SDS also functions as a shape-directing agent to assimilate the Ag0 atoms into single crystalline triangular Ag nanoplates. A model for the shape conversion is also proposed which provides the clue for the synthesis of anisotropic Ag nanoparticles with other shapes (rods, wires, cubes, etc.). © 2007 Elsevier Inc. All rights reserved.
Source Title: Journal of Colloid and Interface Science
URI: http://scholarbank.nus.edu.sg/handle/10635/28822
ISSN: 00219797
DOI: 10.1016/j.jcis.2006.12.081
Appears in Collections:Staff Publications

Show full item record
Files in This Item:
There are no files associated with this item.

SCOPUSTM   
Citations

51
checked on Jun 19, 2018

WEB OF SCIENCETM
Citations

52
checked on Jun 11, 2018

Page view(s)

188
checked on May 12, 2018

Google ScholarTM

Check

Altmetric


Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.