Please use this identifier to cite or link to this item: https://doi.org/10.1016/j.jcis.2006.12.081
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dc.titleDissolution-recrystallization mechanism for the conversion of silver nanospheres to triangular nanoplates
dc.contributor.authorYang, J.
dc.contributor.authorZhang, Q.
dc.contributor.authorLee, J.Y.
dc.contributor.authorToo, H.-P.
dc.date.accessioned2011-11-29T06:09:53Z
dc.date.available2011-11-29T06:09:53Z
dc.date.issued2007
dc.identifier.citationYang, 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
dc.identifier.issn00219797
dc.identifier.urihttp://scholarbank.nus.edu.sg/handle/10635/28822
dc.description.abstractA 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.
dc.description.urihttp://libproxy1.nus.edu.sg/login?url=http://dx.doi.org/10.1016/j.jcis.2006.12.081
dc.sourceScopus
dc.subjectAg nanoplate
dc.subjectAg nanosphere
dc.subjectConversion
dc.subjectSDS
dc.typeArticle
dc.contributor.departmentBIOCHEMISTRY
dc.contributor.departmentCHEMICAL & BIOMOLECULAR ENGINEERING
dc.description.doi10.1016/j.jcis.2006.12.081
dc.description.sourcetitleJournal of Colloid and Interface Science
dc.description.volume308
dc.description.issue1
dc.description.page157-161
dc.description.codenJCISA
dc.identifier.isiut000244434100018
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