Targeted color design of silver-gold alloy nanoparticles

Traore N, Spruck C, Uihlein A, Pflug L, Peukert W (2023)

Publication Type: Journal article

Publication year: 2023

Journal

Nanoscale Advances Royal Society of Chemistry

Abstract

This research article focuses on the targeted color design of silver-gold alloy nanoparticles (NPs), employing a multivariate optimization approach. NP synthesis involves interconnected process parameters, making independent variation challenging. Data-based property-process relationships are established to optimize optical properties effectively. We define a color target, employ a green chemical co-reduction method at room temperature and optimize process parameters accordingly. The CIEL*a*b* color space (Commission Internationale de l'Éclairage - International Commission on Illumination) and Euclidean distances facilitate accurate color matching to establish the property-process relationship. Concurrently, theoretical Mie calculations explore the structure-property relationship across particle sizes, concentrations, and molar gold contents. The theoretically optimal structure agrees very well with experimental particle structures at the property-process relationship's optimum. The data-driven property-process relationship provides valuable insights into the formation mechanism of a complex particle system, sheds light on the role of relevant process parameters and allows to evaluate the practically available property space. Model validation beyond the original grid demonstrates its robustness, yielding colors close to the target. Additionally, Design of Experiments (DoE) methods reduce experimental work by threefold with slight accuracy trade-offs. Our novel methodology for targeted color design demonstrates how data-based methods can be utilized alongside structure-property relationships to unravel property-process relationships in the design of complex nanoparticle systems and paves the way for future developments in targeted property design.

Authors with CRIS profile

Nabi Traore Lehrstuhl für Feststoff- und Grenzflächenverfahrenstechnik Christina Spruck Lehrstuhl für Feststoff- und Grenzflächenverfahrenstechnik Andrian Uihlein Lehrstuhl für Angewandte Mathematik (Kontinuierliche Optimierung) Lukas Pflug FAU Competence Center Scientific Computing (FAU CSC) Wolfgang Peukert Lehrstuhl für Feststoff- und Grenzflächenverfahrenstechnik

How to cite

APA:

Traore, N., Spruck, C., Uihlein, A., Pflug, L., & Peukert, W. (2023). Targeted color design of silver-gold alloy nanoparticles. Nanoscale Advances. https://dx.doi.org/10.1039/d3na00856h

MLA:

Traore, Nabi, et al. "Targeted color design of silver-gold alloy nanoparticles." Nanoscale Advances (2023).

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