The role of pH, metal ions and their hydroxides in charge reversal of protein-coated nanoparticles

Schubert J, Radeke C, Fery A, Chanana M (2019)

Publication Type: Journal article

Publication year: 2019

Journal

Physical Chemistry Chemical Physics Royal Society of Chemistry

Book Volume: 21

Pages Range: 11011-11018

Journal Issue: 21

DOI: 10.1039/c8cp05946b

Abstract

In this study, we investigated charge inversion of protein-coated Au nanoparticles caused by the addition of metal ions. The addition of hydrolyzable metal ions (Lewis acids) can induce drastic pH changes and depending on this pH, the metal ions (e.g. M3+) are readily converted into the hydrolyzed species (MOH2+, M(OH)2+) or even into hydroxides (M(OH)3). Adsorbed metal hydroxides were identified to cause the charge inversion of the NPs by using a combination of cryo-TEM, EFTEM and ζ-potential measurements.

Involved external institutions

Leibniz-Institut für Polymerforschung Dresden e. V. DE Germany (DE) Eidgenössische Technische Hochschule Zürich (ETHZ) / Swiss Federal Institute of Technology in Zurich CH Switzerland (CH)

How to cite

APA:

Schubert, J., Radeke, C., Fery, A., & Chanana, M. (2019). The role of pH, metal ions and their hydroxides in charge reversal of protein-coated nanoparticles. Physical Chemistry Chemical Physics, 21(21), 11011-11018. https://doi.org/10.1039/c8cp05946b

MLA:

Schubert, Jonas, et al. "The role of pH, metal ions and their hydroxides in charge reversal of protein-coated nanoparticles." Physical Chemistry Chemical Physics 21.21 (2019): 11011-11018.

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