Evolution of the Ligand Shell Around Small ZnO Nanoparticles During the Exchange of Acetate by Catechol: A Small Angle Scattering Study

Beitrag in einer Fachzeitschrift
(Originalarbeit)


Details zur Publikation

Autor(en): Schindler T, Lin W, Schmutzler T, Lindner P, Peukert W, Segets D, Unruh T
Zeitschrift: ChemNanoMat
Verlag: Wiley-VCH Verlag
Jahr der Veröffentlichung: 2018
Band: 4
Seitenbereich: 1-9
ISSN: 2199-692X


Abstract

The core‐shell structure of colloids surrounded by ligands is of great
importance for their later application as it can significantly alter the
chemical and physical properties of the nanoparticles (NPs). A
combination of small angle X‐ray and neutron scattering (SAXS/SANS) in
the native solution with additional ex situ measurements (titration‐UV)
was applied to study the NP/ligand interface of ZnO NPs after
functionalization with catechol derivatives. Based on SAXS data, it was
found that within the multimodal particle size distribution the fraction
of agglomerates is shifted to smaller sizes and nearly disappeared upon
the binding of ethyl 3,4‐dihydroxybenzoate (CAT) molecules. This is
ascribed to improved stabilization at the primary particle level by CAT
molecules. By combining the neutron scattering contrast with the input
of bound CAT molecules from a previously developed titration‐UV method,
the heterogeneous composition of the ligand shell became accessible for
the first time.


FAU-Autoren / FAU-Herausgeber

Lin, Wei
Peukert, Wolfgang Prof. Dr.-Ing.
Lehrstuhl für Feststoff- und Grenzflächenverfahrenstechnik
Lehrstuhl für Feststoff- und Grenzflächenverfahrenstechnik
Schindler, Torben
Lehrstuhl für Kristallographie und Strukturphysik
Schmutzler, Tilo
Professur für Nanomaterialcharakterisierung (Streumethoden)
Segets, Doris Dr.-Ing.
Lehrstuhl für Feststoff- und Grenzflächenverfahrenstechnik
Unruh, Tobias Prof. Dr.
Professur für Nanomaterialcharakterisierung (Streumethoden)


Zusätzliche Organisationseinheit(en)
Graduiertenkolleg 1896/2 In situ Mikroskopie mit Elektronen, Röntgenstrahlen und Rastersonden


Autor(en) der externen Einrichtung(en)
Institute Laue-Langevin (ILL)


Zitierweisen

APA:
Schindler, T., Lin, W., Schmutzler, T., Lindner, P., Peukert, W., Segets, D., & Unruh, T. (2018). Evolution of the Ligand Shell Around Small ZnO Nanoparticles During the Exchange of Acetate by Catechol: A Small Angle Scattering Study. ChemNanoMat, 4, 1-9. https://dx.doi.org/10.1002/cnma.201800465

MLA:
Schindler, Torben, et al. "Evolution of the Ligand Shell Around Small ZnO Nanoparticles During the Exchange of Acetate by Catechol: A Small Angle Scattering Study." ChemNanoMat 4 (2018): 1-9.

BibTeX: 

Zuletzt aktualisiert 2019-06-02 um 16:26