Traore N, Berthold M, Hartmann L, Schmul P, Apeleo Zubiri B, Spiecker E, Peukert W (2024)
Publication Language: English
Publication Status: Published
Publication Type: Journal article, Original article
Publication year: 2024
Publisher: American Chemical Society
URI: https://pubs.acs.org/doi/10.1021/acs.jpcc.4c00321
In this work, we independently tune both the
particle size and the chemical composition of bimetallic silver−gold
alloy nanoparticles (NPs) by carefully controlling the reaction
pathway. NP synthesis involves control of the supersaturation
profile in time and space. For the reaction-controlled case, this
supersaturation profile is determined by a network of reactions
leading to the buildup of the monomer concentration. Using a
variety of characterization tools, we show how the process
conditions influence the coupled reactions in the complex formation mechanism of Ag−Au alloy NPs. Applying a simple mass
balance allows for the independent control of size and chemical composition of these NPs, yielding particles with constant
composition and varying size in the range of 20 to 40 nm. A series of constant sizes and varying chemical compositions in the range
of 10% to 100% molar gold content is also possible. Our new methodology shows an example of how reaction networks can be
tailored to achieve targeted NP properties and paves the way for better control in the synthesis of multicomponent NPs.
APA:
Traore, N., Berthold, M., Hartmann, L., Schmul, P., Apeleo Zubiri, B., Spiecker, E., & Peukert, W. (2024). Tailoring the Reaction Pathway for Control of Size and Composition of Silver-Gold Alloy Nanoparticles. Journal of Physical Chemistry C. https://doi.org/10.1021/acs.jpcc.4c00321
MLA:
Traore, Nabi, et al. "Tailoring the Reaction Pathway for Control of Size and Composition of Silver-Gold Alloy Nanoparticles." Journal of Physical Chemistry C (2024).
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