New Insights into the Side-Face Structure, Growth Aspects, and Reactivity of Agn Nanoprisms

Aurélie Le Beulze (1) , Etienne Duguet (1) , Stéphane Mornet (1) , Jérôme Majimel (1) , Mona Tréguer-Delapierre (1) , Serge Ravaine (2) , Ileana Florea (3) , Ovidiu Ersen (3)

1 ICMCB - Institut de Chimie de la Matière Condensée de Bordeaux
2 CRPP - Centre de recherches Paul Pascal
3 IPCMS - Institut de Physique et Chimie des Matériaux de Strasbourg

We report an improved synthesis of colloidal Agn nanoprisms using carboxyl compounds (citrate or succinate) and long chain macromolecules (polyvinylpyrrolidone (PVP)). The side-facet structure of the triangular nanostructure was determined in detail using electron tomography in scanning transmission mode (3D STEM) and HRTEM. It has been found that they are built up by {100} facets with a single parallel twin plane. The best conditions for producing uniform Ag nanoprisms with tunable sizes and high yields in the presence of carboxyl compounds additive system are described, and a growth mechanism is proposed. This approach provides also a route to synthesize Ag nanodisks and Au−Ag alloyed nanoprisms.

Mots clés: Nanostructures; Macromolecules; Colloids

Domaines: Matière Molle [cond-mat.soft]; Polymères

Aurélie Le Beulze, Etienne Duguet, Stéphane Mornet, Jérôme Majimel, Mona Tréguer-Delapierre, et al.. New Insights into the Side-Face Structure, Growth Aspects, and Reactivity of Agn Nanoprisms. Langmuir, 2014, 30, pp. 1424−1434. ⟨10.1021/la4039705⟩. ⟨hal-00955407⟩