Tunable gold nanoparticles shape and size in reductive and structuring media containing protic ionic liquids - Physico-chimie des Matériaux et des Electrolytes pour l'Energie Laboratoire - - EA 6299 Accéder directement au contenu
Article Dans Une Revue Ionics Année : 2013

Tunable gold nanoparticles shape and size in reductive and structuring media containing protic ionic liquids

Résumé

Herein, a facile method was developed for preparing high concentration of monodispersed gold nanoparticles (NPs) at room temperature from gold(III) chloride by using different media based on N,N-dimethylformamide or water solutions containing a protic ionic liquid (PIL), namely, the octylammonium formate or the bis(2-ethyl-hexyl)ammonium formate, based on which both PILs were used as redox-active structuring media. The formation of gold NPs in these systems was then characterized using UV–visible spectroscopy, transmission electron microscopy, and dynamic light scattering. From these investigations, it appears that the structure and aggregation pathway of PILs in selected solvents affect strongly the formation, growth, the shape, and the size of gold NPs. In fact, by using this approach, the shape-/ size-controlled gold NPs (branched and spherical) can be generated under mild condition. This approach suggests also a wealth of potential for these designer nanomaterials within the biomedical, materials, and catalysis communities by using designer and safer media based on PILs.

Dates et versions

hal-02064059 , version 1 (11-03-2019)

Identifiants

Citer

Meriem Anouti, Amina Mirghani, Johan Jacquemin, Laure Timperman, Hervé Galiano. Tunable gold nanoparticles shape and size in reductive and structuring media containing protic ionic liquids. Ionics, 2013, 19 (12), pp.1783-1790. ⟨10.1007/s11581-013-0915-0⟩. ⟨hal-02064059⟩
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