Preparation of AgShell–AuCore nanoparticles by anti-Galvanic reactions: are capping agents the “real heroes” of reduction?

Sahu, Puspanjali ; Prasad, B. L. V. (2015) Preparation of AgShell–AuCore nanoparticles by anti-Galvanic reactions: are capping agents the “real heroes” of reduction? Colloids and Surfaces A: Physicochemical and Engineering Aspects, 478 . pp. 30-35. ISSN 0927-7757

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Official URL: http://www.sciencedirect.com/science/article/pii/S...

Related URL: http://dx.doi.org/10.1016/j.colsurfa.2015.03.028

Abstract

The formation of AgShell–AuCore nanoparticles by the reduction of Ag+ ions on preformed Au NPs, mediated by the capping agents like dodecylamine is described. We clearly established that while monodisperse AgShell–AuCore structures can be formed in presence of weak surface binding ligands such as amines, strong binding ligands such as thiols, lead to formation of separate monometallic Au and Ag particles. Apart from highlighting the influence of metal-ligand binding strength on the formation of core–shell nanoparticle architectures, our study also provides an easy means to produce AgShell–AuCore structures.

Item Type:Article
Source:Copyright of this article belongs to Elsevier Science.
Keywords:AgShell–AuCore Nanoparticles; Anti-galvanic Reactions
ID Code:105356
Deposited On:01 Feb 2018 17:12
Last Modified:01 Feb 2018 17:12

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