Theoretical study of the amphoteric oxide nanoparticle surface charge during multi-particle interactions in aqueous solutions

2nd International School and Conference Saint-Petersburg OPEN on Optoelectronics, Photonics, Engineering and Nanostructures

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

ITMO University, Kronverkskiy, 49, St. Petersburg

197101, Russia^1

关键词: Biological applications;    Charge regulation;    Electric double layer;    Multi-particle interactions;    Nanoparticle agglomerations;    Nanoparticle surface charge;    Surface charging;    Theoretical study;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/643/1/012019/pdf
DOI  :  10.1088/1742-6596/643/1/012019

来源: IOP

【 摘 要 】

Nanoparticle surface charge plays an important role in many biological applications. In this study, an analytical surface charging model for the amphoteric oxide nanoparticles has been presented. The model accounts for the particle's electric double layer self-action on the charging process and the charge regulation during multi-particle interactions in aqueous solutions. The employment of the model allows to explicitly describe the nanoparticle agglomeration process and the accompanying agglomerate surface charge variation.