Liquid phase separation of acicular goethite nanoparticles comprising dendrites, intergrowths and hexagonal frames

Distaso M, Banerjee S (2025)

Publication Type: Journal article

Publication year: 2025

Journal

Colloids and Surfaces A-Physicochemical and Engineering Aspects Elsevier

Book Volume: 727

Article Number: 138178

DOI: 10.1016/j.colsurfa.2025.138178

Abstract

The control on the shape and size of nanoparticles is fundamental to control their properties. Besides the design of selective synthetic protocols, the development of size and shape separation methods paves the way towards more homogeneous samples with improved properties. In the current paper, we compare the ability of aqueous solutions of MCl4 (M = Zr, Hf) to act as colloidal stabilizers for goethite nanoparticles polydisperse in size and shape. More precisely, the occurrence of goethite particles with shapes deviating from the target acicular is ascertain and quantified with respect to experimental conditions during the synthesis. The stabilization method is applied to effectively separate goethite particles into a fine and coarse fraction, which are analysed in depth. Each fraction is characterized by Scanning Electron Microscopy (SEM), electrophoretic mobility to assess Zeta potential and UV-Vis spectroscopy to ascertain the stability of the suspensions and of the separated fractions.

Authors with CRIS profile

Monica Distaso Sonderforschungsbereich 953/3 Synthetische Kohlenstoffallotrope Semanti Banerjee Sonderforschungsbereich 1411/2 Produktgestaltung disperser Systeme (SFB 1411)

How to cite

APA:

Distaso, M., & Banerjee, S. (2025). Liquid phase separation of acicular goethite nanoparticles comprising dendrites, intergrowths and hexagonal frames. Colloids and Surfaces A-Physicochemical and Engineering Aspects, 727. https://doi.org/10.1016/j.colsurfa.2025.138178

MLA:

Distaso, Monica, and Semanti Banerjee. "Liquid phase separation of acicular goethite nanoparticles comprising dendrites, intergrowths and hexagonal frames." Colloids and Surfaces A-Physicochemical and Engineering Aspects 727 (2025).

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