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Single Step Hybrid Coating Process to Enhance the Electrosteric Stabilization of Inorganic Particles

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Download Hi-Res ImageDownload to MS-PowerPointCite This:Langmuir 2011, 27, 11, 6622-6627
    Article

    Single Step Hybrid Coating Process to Enhance the Electrosteric Stabilization of Inorganic Particles
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    † Adolphe Merkle Institute and Fribourg Center for Nanomaterials, University of Fribourg, Route de l’Ancienne Papeterie P.O. Box 209, 1723 Marly 1, Switzerland
    ‡ Physical Chemistry, University of Lund, S-22100 Lund, Sweden
    *Dr. Hervé Dietsch, Adolphe Merkle Institute and Fribourg Center for Nanomaterials, University of Fribourg, Marly 1, CH-1723 (Switzerland); E-mail [email protected]; Tel + 41 26 300 9137; Fax + 41 26 300 9624. Prof. Dr. Peter Schurtenberger, Physical Chemistry, University of Lund, S-22100 Lund, Sweden; E-mail [email protected]
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    Langmuir

    Cite this: Langmuir 2011, 27, 11, 6622–6627
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    https://doi.org/10.1021/la200525u
    Published April 29, 2011
    Copyright © 2011 American Chemical Society
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    Abstract

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    We report on a single-step coating process and the resulting colloidal stability of silica-coated spindle-type hematite nanoparticles (NPs) decorated with a layer of poly(acrylic acid) (PAA) polyelectrolyte chains that are partially incorporated into the silica shell. The stability of PAA coated NPs as a function of pH and salt concentration in water was compared to bare hematite particles and simple silica-coated hematite NPs, studying their electrophoretic mobility and the hydrodynamic radius by dynamic light scattering. Particles coated with this method were found to be more stable upon the addition of salt at pH 7, and their aggregation at the pH of the isoelectric point is reversible. The hybrid coating appears to increase the colloidal stability in aqueous media due to the combination of the decrease of the isoelectric point and the electrosteric stabilization. This coating method is not limited to hematite particles but can easily be adapted to any silica-coatable particle.

    Copyright © 2011 American Chemical Society

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    Supporting Information

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    Additional figures showing nanoparticle characterization (size distribution of hematite nanoparticles; infrared spectra before and after the coating step and after three months of storage), and stability study (DLS correlation functions for coated particles with, without salt and after removal of salt). This material is available free of charge via the Internet at http://pubs.acs.org.

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    Cited By

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    This article is cited by 19 publications.

    1. Ilya Martchenko, Hervé Dietsch, Christian Moitzi, and Peter Schurtenberger . Hydrodynamic Properties of Magnetic Nanoparticles with Tunable Shape Anisotropy: Prediction and Experimental Verification. The Journal of Physical Chemistry B 2011, 115 (49) , 14838-14845. https://doi.org/10.1021/jp2078264
    2. Tobias Kuhnt, Sandra Camarero‐Espinosa, Milad Takhsha Ghahfarokhi, Mariana Arreguín, Riccardo Cabassi, Franca Albertini, Daniel Nieto, Matthew B. Baker, Lorenzo Moroni. 4D Printed Shape Morphing Biocompatible Materials Based on Anisotropic Ferromagnetic Nanoparticles. Advanced Functional Materials 2022, 32 (50) https://doi.org/10.1002/adfm.202202539
    3. Michael R. Nunes, Cleonice G. da Rosa, Julia R. de Borba, Gabriel M. dos Santos, Ana L. Ferreira, Pedro Luiz M. Barreto. Zein Nanoparticles: Bioactive Compounds and Controlled Delivery. 2022, 411-436. https://doi.org/10.1002/9783527832095.ch13
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    7. Marek Kosmulski. Isoelectric points and points of zero charge of metal (hydr)oxides: 50years after Parks' review. Advances in Colloid and Interface Science 2016, 238 , 1-61. https://doi.org/10.1016/j.cis.2016.10.005
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    10. Manoj Singh, Alexander Savchenko, Igor Shetinin, Alexander Majouga. An original route to target delivery via core-shell modification of SPIONs. Materials Today: Proceedings 2016, 3 (8) , 2652-2661. https://doi.org/10.1016/j.matpr.2016.06.009
    11. Renata Fumagali Scirea, Luiz Eloi Vieira Junior, João Batista Rodrigues Neto, Dachamir Hotza. Otimização reológica de suspensões aquosas de óxido de ferro (III). Matéria (Rio de Janeiro) 2015, 20 (1) , 185-192. https://doi.org/10.1590/S1517-707620150001.0019
    12. Shuo Bai, Hua Zou, Hervé Dietsch, Yoan C. Simon, Christoph Weder. Functional Iron Oxide Nanoparticles as Reversible Crosslinks for Magnetically Addressable Shape‐Memory Polymers. Macromolecular Chemistry and Physics 2014, 215 (5) , 398-404. https://doi.org/10.1002/macp.201300632
    13. Maximiliano Brigante, María E. Parolo, Pablo C. Schulz, Marcelo Avena. Synthesis, characterization of mesoporous silica powders and application to antibiotic remotion from aqueous solution. Effect of supported Fe-oxide on the SiO2 adsorption properties. Powder Technology 2014, 253 , 178-186. https://doi.org/10.1016/j.powtec.2013.11.008
    14. R. Woolley, S. Roy, Ú. Prendergast, A. Panzera, L. Basabe-Desmonts, D. Kenny, C. McDonagh. From particle to platelet: Optimization of a stable, high brightness fluorescent nanoparticle based cell detection platform. Nanomedicine: Nanotechnology, Biology and Medicine 2013, 9 (4) , 540-549. https://doi.org/10.1016/j.nano.2012.10.001
    15. Johannes M. Haberl, Antoni Sánchez-Ferrer, Adriana M. Mihut, Hervé Dietsch, Ann M. Hirt, Raffaele Mezzenga. Strain-induced macroscopic magnetic anisotropy from smectic liquid-crystalline elastomer–maghemite nanoparticle hybrid nanocomposites. Nanoscale 2013, 5 (12) , 5539. https://doi.org/10.1039/c3nr01016c
    16. Venkateshwar Rao Dugyala, Santosh V. Daware, Madivala G. Basavaraj. Shape anisotropic colloids: synthesis, packing behavior, evaporation driven assembly, and their application in emulsion stabilization. Soft Matter 2013, 9 (29) , 6711. https://doi.org/10.1039/c3sm50404b
    17. Nébéwia Griffete, Martin J.D. Clift, Aazdine Lamouri, Reinaldo G. Digigow, Adriana M. Mihut, Alke Fink, Barbara Rothen-Rutishauser, Hervé Dietsch. Amino covalent binding approach on iron oxide nanoparticle surface: Toward biological applications. Colloids and Surfaces A: Physicochemical and Engineering Aspects 2012, 415 , 98-104. https://doi.org/10.1016/j.colsurfa.2012.09.020
    18. Verena Städele, Urs Gasser, Hervé Dietsch. Ellipsoidal hybrid magnetic microgel particles with thermally tunable aspect ratios. Soft Matter 2012, 8 (16) , 4427. https://doi.org/10.1039/c2sm07152e
    19. Jérôme J. Crassous, Hervé Dietsch, Patrick Pfleiderer, Vikash Malik, Ana Diaz, Liliane Ackermann Hirshi, Markus Drechsler, Peter Schurtenberger. Preparation and characterization of ellipsoidal-shaped thermosensitive microgel colloids with tailored aspect ratios. Soft Matter 2012, 8 (13) , 3538. https://doi.org/10.1039/c2sm07257b
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    Langmuir

    Cite this: Langmuir 2011, 27, 11, 6622–6627
    Click to copy citationCitation copied!
    https://doi.org/10.1021/la200525u
    Published April 29, 2011
    Copyright © 2011 American Chemical Society
    Request reuse permissions

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