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Síntesis y caracterización de nanopartículas de metal hexacianoferrato obtenidas en microemulsiones inversas
| Content Provider | Semantic Scholar |
|---|---|
| Author | Becerra, Alberto Gutiérrez Soto, Maximiliano Bárcena Santana, Norberto Casillas Vázquez, José Inés Escalante |
| Copyright Year | 2010 |
| Abstract | espanolLa sintesis de nanoparticulas metalicas usando micelas inversas resulta ser una tecnica viable y atractiva, ya que se pueden sintetizar nanoparticulas con una distribucion de tamano estrecha, ademas de que el tamano puede ser facilmente controlado mediante la variacion de la composicion de la microemulsion (ME). En este estudio se sintetizo un nuevo tensioactivo que se denominara en lo sucesivo CTAFeII, donde los iones Br- del tensioactivo CTAB se sustituyen por iones [Fe(CN)6]4- mediante una reaccion de metatesis directa en fase acuosa. El diagrama de fase del sistema CTAB + CTAFeII/n-butanol/n-hexano/agua mostro una amplia region unifasica que se uso como un medio alternativo para la sintesis "in situ" de nanoparticulas de metal hexacianoferratos (HCF) con una formula general M2[Fe(CN)6]. Esto es, mediante esta tecnica es posible incorporar contraiones complejos sin tener que anadir una sal adicional al sistema. Resultados de DLS nos permitieron dilucidar el tamano de las gotas de ME, y mediante microscopia TEM se apreciaron las nanoparticulas de NiHCF sintetizadas EnglishThe synthesis of metal nanoparticles by reverse micelles is viable and attractive because not only does it produce nanoparticles that have a narrow size distribution but also the particle sizes can be easily controlled by varying the ME composition. In this study was synthesized a new modified surfactant named hereafter as (CTAFeII), were Br- ions of the surfactant CTAB are replaced by [Fe(CN)6]4- ions following a direct metathesis reaction in aqueous phase. The phase diagram for the system CTAB + CTAFeII/n-butanol/n-hexane/water shown a wide one-phase region which was used as an alternative media for in situ synthesizing metal hexacianoferrates nanoparticles with a general formula M2[Fe(CN)6]. By doing so, one is able to incorporate the complex counterion without having to add an additional salt. To elucidate the size of the ME droplets, DLS experiments were conducted. However, TEM micrograph were obtained for the NiHCF nanoparticles |
| Starting Page | 457 |
| Ending Page | 470 |
| Page Count | 14 |
| File Format | PDF HTM / HTML |
| Volume Number | 11 |
| Alternate Webpage(s) | http://www.ehu.eus/reviberpol/pdf/DIC10/gutierrez.pdf |
| Language | English |
| Access Restriction | Open |
| Content Type | Text |
| Resource Type | Article |
