Scalable classification of nanoparticles: A proof of principle for process design
Menter C, Segets D (2019)
Publication Type: Journal article
Publication year: 2019
Journal
DOI: 10.1016/j.apt.2019.08.027
Abstract
Nanoparticles like quantum confined ZnS semiconductor nanocrystals, exhibit unique structure-property relationships. Narrow particle size distributions (PSDs) become one of the most important factors to tailor product performance. Size selective precipitation has already been proven to be an effective post processing strategy for ZnS nanoparticles. It is based on the titration of a poor liquid into a stable dispersion, which leads to the preferred flocculation of larger particles. Afterwards, these flocks must be separated from the continuous phase. While on lab scale the formed flocks can be easily separated by centrifugation from the fine fraction, for larger scale production using continuous processes, new concepts are urgently needed. Herein we developed a filtration process for flock removal that allows the handling of larger quantities. For process design, we first investigated the flock properties in order to know how stable the generated flocks are and how the flock properties can be controlled. Then, we replaced the classical flock separation by centrifugation through separation by surface filtration under the constraint that the underlying separation efficiency was not affected. By the future use of properly controlled, alternating filtration modules, our work opens the door for establishing an urgently needed, scalable post-processing for sub-10 nm nanoparticles.
Authors with CRIS profile
Additional Organisation(s)
Involved external institutions
Germany (DE)How to cite
APA:
Menter, C., & Segets, D. (2019). Scalable classification of nanoparticles: A proof of principle for process design. Advanced Powder Technology. https://dx.doi.org/10.1016/j.apt.2019.08.027
MLA:
Menter, Christina, and Doris Segets. "Scalable classification of nanoparticles: A proof of principle for process design." Advanced Powder Technology (2019).
BibTeX: Download