Influence of individual ionic components on the agglomeration kinetics of silver nanoparticles

• Published in: Journal of colloid and interface science 2011-02, Vol.354 (2), p.546-554
• Main Authors: Gebauer, J.S., Treuel, L.
• Format: Article
• Language: English
• Subjects: Agglomeration; Agglomeration kinetics; Brownian motion; Charging; Chemistry; Chlorides - chemistry; Colloidal state and disperse state; Colloids; Colloids - chemistry; Exact sciences and technology; General and physical chemistry; ions; Ions - chemistry; Nanocomposites; Nanomaterials; Nanoparticles; Nanoparticles - chemistry; Nanoparticles - ultrastructure; nanosilver; Nanostructure; Particle Size; Physical and chemical studies. Granulometry. Electrokinetic phenomena; Raman spectroscopy; salts; Salts - chemistry; Silver; Silver - chemistry; Silver nanoparticles; Spectrum Analysis, Raman; Sulfates - chemistry
• ISSN: 0021-9797; 1095-7103
• DOI: 10.1016/j.jcis.2010.11.016

Size distributions of silver NPs are determined (left) and the influence of individual ionic components on the agglomeration behavior (middle) and the H-bonding structure of water (right) studied. [Display omitted] ► Individual ionic contribution to the destabilization of colloidal silver nanoparticles. ► Determination of elemental charges on colloidal NPs. ► Concentration-dependent determination of ion-induced agglomeration rates. ► Ionic influence on the water near structure. The precise characteristic of the agglomeration behavior of colloidal suspensions is of paramount interest to many current studies in nanoscience. This work seeks to elucidate the influence that differently charged salts have on the agglomeration state of a Lee–Meisel-type silver colloid. Moreover, we investigate the influence of the chemical nature of individual ions on their potential to induce agglomeration. Raman spectroscopy and surface-enhanced Raman spectroscopy are used to give insights into mechanistic aspects of the agglomeration process and to assess the differences in the influence of different salts on the agglomeration behavior. Finally, we demonstrate the potential of the measurement procedure used in this work to determine the elementary charge on colloidal NPs.