Theoretical study of the morphology of self-assembled amphoteric oxide colloid nanocrystals in weak electrolyte solutions

International Conference of Young Scientists and Specialists "Optics-2015"

Alfimov, A.V.^1 ; Aryslanova, E.M.^1 ; Chivilikhin, S.A.^1

ITMO University, Kronverkskiy 49, St. Petersburg

197101, Russia^1

关键词: Charge regulation;    Colloidal interaction;    Colloidal nanoparticles;    Multi-particle interactions;    Nanoparticle aggregation;    Orientation effect;    Theoretical study;    Weak electrolytes;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/735/1/012009/pdf
DOI  :  10.1088/1742-6596/735/1/012009

来源: IOP

【 摘 要 】

The present paper is devoted to the theoretical study of the morphology of nanocrystals formed through self-assembly of amphoteric oxide colloidal nanoparticles in weak electrolytes. A mathematical model of multi-particle colloidal interaction was developed within the framework of the Derjaguin, Landau, Verwey, Overbeak (DLVO) theory. This model accounts for the surface charge regulation during the multi-particle interaction and reveals the presence of orientation effects during nanoparticle aggregation. These effects are presumed to affect the morphology of the self-assembled nanocrystals and may present the means of controlling the structure of synthesised nanomaterials.