Shape transformation from silver triangular nanoprisms to nanodisks: Raman characterization and sculpturing mechanism
Fuente:
Redalyc
Enregistré dans:
| Auteur principal: | |
|---|---|
| Format: | Artículo científico |
| Langue: | en |
| Publié: |
Sociedad Mexicana de Física A.C.
2015
|
| Sujets: | |
| Accès en ligne: | |
| Tags: |
Ajouter un tag
Pas de tags, Soyez le premier à ajouter un tag!
|
| _version_ | 1876435359336759296 |
|---|---|
| author | I.A. López |
| author_facet | I.A. López |
| contents | Shape transformation from silver triangular nanoprisms to nanodisks: Raman characterization and sculpturing mechanism I.A. López M. Ceballos G. Hernández L. Acosta I. Gómez Física, Astronomía y Matemáticas silver nanodisks Raman spectroscopy Silver triangular nanoprisms The sculpturing action of chloride ions on silver nanoplates is investigated. Recent reports show that the shape transformation from silver triangular nanoprisms to nanodisks by addition of chloride ion occurs after a threshold concentration. In this work, a chemical study of this threshold concentration is presented. There is theoretical and experimental evidence that the morphological change only depends on the chloride ion concentration and not on the Cl ° /Ag molar ratio. Besides, the chloride ion etching ability is attributed to the (AgCl) ± complex, which controls the morphology change through a stepwise process where a silver atom is removed from the (110) plane, and is subsequently deposited on the (111) plane (i.e. from the nanoplate vertex to the basal plane). The threshold chloride ion concentration in the shape transformation coincides with the point where Ag + ion and (AgCl) ± concentrations are the same. On the other hand, the quantitative formation of AgCl ° 2 avoids the stepwise process, and then the colloidal system is destabilized. Furthermore, the analysis of the Raman spectra supports the transformation mechanisms. 2015 artículo científico 0035-001X https://www.redalyc.org/articulo.oa?id=57036862002 en http://www.redalyc.org/revista.oa?id=570 Revista Mexicana de Física application/pdf Sociedad Mexicana de Física A.C. Revista Mexicana de Física (México) Num.2 Vol.61 |
| format | Artículo científico |
| id | redalyc_57036862002 |
| institution | Redalyc |
| language | en |
| publishDate | 2015 |
| publisher | Sociedad Mexicana de Física A.C. |
| spellingShingle | Shape transformation from silver triangular nanoprisms to nanodisks: Raman characterization and sculpturing mechanism I.A. López Física, Astronomía y Matemáticas silver nanodisks Raman spectroscopy Silver triangular nanoprisms Shape transformation from silver triangular nanoprisms to nanodisks: Raman characterization and sculpturing mechanism I.A. López M. Ceballos G. Hernández L. Acosta I. Gómez Física, Astronomía y Matemáticas silver nanodisks Raman spectroscopy Silver triangular nanoprisms The sculpturing action of chloride ions on silver nanoplates is investigated. Recent reports show that the shape transformation from silver triangular nanoprisms to nanodisks by addition of chloride ion occurs after a threshold concentration. In this work, a chemical study of this threshold concentration is presented. There is theoretical and experimental evidence that the morphological change only depends on the chloride ion concentration and not on the Cl ° /Ag molar ratio. Besides, the chloride ion etching ability is attributed to the (AgCl) ± complex, which controls the morphology change through a stepwise process where a silver atom is removed from the (110) plane, and is subsequently deposited on the (111) plane (i.e. from the nanoplate vertex to the basal plane). The threshold chloride ion concentration in the shape transformation coincides with the point where Ag + ion and (AgCl) ± concentrations are the same. On the other hand, the quantitative formation of AgCl ° 2 avoids the stepwise process, and then the colloidal system is destabilized. Furthermore, the analysis of the Raman spectra supports the transformation mechanisms. 2015 artículo científico 0035-001X https://www.redalyc.org/articulo.oa?id=57036862002 en http://www.redalyc.org/revista.oa?id=570 Revista Mexicana de Física application/pdf Sociedad Mexicana de Física A.C. Revista Mexicana de Física (México) Num.2 Vol.61 |
| title | Shape transformation from silver triangular nanoprisms to nanodisks: Raman characterization and sculpturing mechanism |
| topic | Física, Astronomía y Matemáticas silver nanodisks Raman spectroscopy Silver triangular nanoprisms |
| url | https://www.redalyc.org/articulo.oa?id=57036862002 |