Analysis of optical absorbance spectra for the determination of ZnO nanoparticle size distribution, solubility, and surface energy

Beitrag in einer Fachzeitschrift


Details zur Publikation

Autorinnen und Autoren: Segets D, Gradl J, Klupp Taylor R, Vassilev V, Peukert W
Zeitschrift: Acs Nano
Jahr der Veröffentlichung: 2009
Band: 3
Heftnummer: 7
Seitenbereich: 1703-1710
ISSN: 1936-0851
Sprache: Englisch


Abstract


We present a model to calculate particle size distributions (PSDs) of colloidal ZnO nanoparticles from their absorbance spectra. Using literature values for the optical properties of bulk ZnO and correlating the measurement wavelengths in the UV−visible regime with distinct particle sizes by a tight binding model (TBM), an algorithm deconvolutes the absorbance spectra into contributions from size fractions. We find an excellent agreement between size distributions determined from TEM images and the calculated PSDs. For further validation, bimodal PSDs have been investigated and an approach to determine not only particle size but also solid concentration is introduced. We will show the applicability of our model by the determination of temperature-dependent ripening rates, which enables the calculation of solubilities, surface tensions, and the activation enthalpy of ripening. In principle, our methodology is applicable to different semiconductor nanoparticles in various solvents as long as their bulk properties are known and scattering is negligible.



FAU-Autorinnen und Autoren / FAU-Herausgeberinnen und Herausgeber

Klupp Taylor, Robin Prof.
Professur für Nanostructured Particles
Peukert, Wolfgang Prof. Dr.-Ing.
Lehrstuhl für Feststoff- und Grenzflächenverfahrenstechnik
Segets, Doris Dr.-Ing.
Lehrstuhl für Feststoff- und Grenzflächenverfahrenstechnik


Zusätzliche Organisationseinheit(en)
Exzellenz-Cluster Engineering of Advanced Materials


Forschungsbereiche

C Photonic and Optical Materials
Exzellenz-Cluster Engineering of Advanced Materials
A1 Functional Particle Systems
Exzellenz-Cluster Engineering of Advanced Materials


Zitierweisen

APA:
Segets, D., Gradl, J., Klupp Taylor, R., Vassilev, V., & Peukert, W. (2009). Analysis of optical absorbance spectra for the determination of ZnO nanoparticle size distribution, solubility, and surface energy. Acs Nano, 3(7), 1703-1710. https://dx.doi.org/10.1021/nn900223b

MLA:
Segets, Doris, et al. "Analysis of optical absorbance spectra for the determination of ZnO nanoparticle size distribution, solubility, and surface energy." Acs Nano 3.7 (2009): 1703-1710.

BibTeX: 

Zuletzt aktualisiert 2019-24-08 um 14:50