Quantitative evaluation of size selective precipitation of Mn-doped ZnS quantum dots by size distributions calculated from UV/Vis absorbance spectra

Beitrag in einer Fachzeitschrift


Details zur Publikation

Autorinnen und Autoren: Segets D, Komada S, Butz B, Spiecker E, Mori Y, Peukert W
Zeitschrift: Journal of Nanoparticle Research
Verlag: Springer Verlag (Germany)
Jahr der Veröffentlichung: 2013
Band: 15
Heftnummer: 4
Seitenbereich: 1486
ISSN: 1388-0764


Abstract


We demonstrate the quantitative evaluation of the sharp classification of manganese-doped zinc sulfide (ZnS:Mn) quantum dots by size selective precipitation. The particles were characterized by the direct conversion of absorbance spectra to particle size distributions (PSDs) and high-resolution transmission electron micrographs (HRTEM). Gradual addition of a poor solvent (2-propanol) to the aqueous colloid led to the flocculation of larger particles. Though the starting suspension after synthesis had an already narrow PSD between 1.5 and 3.2 nm, different particle size fractions were subsequently isolated by the careful adjustment of the good solvent/poor solvent ratio. Moreover, due to the fact that for the analysis of the classification results the size distributions were available, an in-depth understanding of the quality of the distinct classification steps could be achieved. From the PSDs of the feed, as well as the coarse and the fine fractions with their corresponding yields determined after each classification step, an optimum after the first addition of poor solvent was identified with a maximal separation sharpness κ as high as 0.75. Only by the quantitative evaluation of classification results leading to an in-depth understanding of the relevant driving forces, a future transfer of this lab scale post-processing to larger quantities will be possible.



FAU-Autorinnen und Autoren / FAU-Herausgeberinnen und Herausgeber

Butz, Benjamin Dr.
Lehrstuhl für Werkstoffwissenschaften (Mikro- und Nanostrukturforschung)
Peukert, Wolfgang Prof. Dr.-Ing.
Lehrstuhl für Feststoff- und Grenzflächenverfahrenstechnik
Segets, Doris Dr.-Ing.
Lehrstuhl für Feststoff- und Grenzflächenverfahrenstechnik
Spiecker, Erdmann Prof. Dr.
Lehrstuhl für Werkstoffwissenschaften (Mikro- und Nanostrukturforschung)


Zusätzliche Organisationseinheit(en)
Exzellenz-Cluster Engineering of Advanced Materials
Interdisziplinäres Zentrum, Center for Nanoanalysis and Electron Microscopy (CENEM)


Einrichtungen weiterer Autorinnen und Autoren

Doshisha University / 同志社大学


Forschungsbereiche

A1 Functional Particle Systems
Exzellenz-Cluster Engineering of Advanced Materials
A2 Nanoanalysis and Microscopy
Exzellenz-Cluster Engineering of Advanced Materials


Zitierweisen

APA:
Segets, D., Komada, S., Butz, B., Spiecker, E., Mori, Y., & Peukert, W. (2013). Quantitative evaluation of size selective precipitation of Mn-doped ZnS quantum dots by size distributions calculated from UV/Vis absorbance spectra. Journal of Nanoparticle Research, 15(4), 1486. https://dx.doi.org/10.1007/s11051-013-1486-8

MLA:
Segets, Doris, et al. "Quantitative evaluation of size selective precipitation of Mn-doped ZnS quantum dots by size distributions calculated from UV/Vis absorbance spectra." Journal of Nanoparticle Research 15.4 (2013): 1486.

BibTeX: 

Zuletzt aktualisiert 2019-29-05 um 16:08