Cited by 150Laser-Ablation Synthesis of NanoparticlesGold and Silver Nanoparticles Synthesis and ApplicationsAdvanced Nanomaterials in Catalysis

Solvent-surface interactions control the phase structure in laser-generated iron-gold core-shell nanoparticles

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Wagener, Philipp, Jakobi, Jurij, Rehbock, Christoph, Chakravadhanula, Venkata Sai Kiran, Thede, Claas, Wiedwald, Ulf, Bartsch, Mathias, Kienle, Lorenz +1 more·2016·Scientific Reports

Abstract

This work highlights a strategy for the one-step synthesis of FeAu nanoparticles by the pulsed laser ablation of alloy targets in the presence of different solvents. This method allows particle generation without the use of additional chemicals; hence, solvent-metal interactions could be studied without cross effects from organic surface ligands. A detailed analysis of generated particles via transmission electron microscopy in combination with EDX elemental mapping could conclusively verify that the nature of the used solvent governs the internal phase structure of the formed nanoparticles. In the presence of acetone or methyl methacrylate, a gold shell covering a non-oxidized iron core was formed, whereas in aqueous media, an Au core with an Fe 3 O 4 shell was generated. This core-shell morphology was the predominant species found in >90% of the examined nanoparticles. These findings indicate that fundamental chemical interactions between the nanoparticle surface and the solvent significantly contribute to phase segregation and elemental distribution in FeAu nanoparticles. A consecutive analysis of resulting Fe@Au core-shell nanoparticles revealed outstanding oxidation resistance and fair magnetic and optical properties. In particular, the combination of these features with high stability magnetism and plasmonics may create new opportunities for this hybrid material in imaging applications.

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Authors
Wagener, P., Jakobi, J., Rehbock, C., Chakravadhanula, V. S. K., Thede, C., Wiedwald, U., Bartsch, M., Kienle, L., & Barcikowski, S.
Affiliations
  • University of Duisburg-Essen (DE)
  • Christian-Albrechts-Universität zu Kiel (DE)
Corresponding author
Barcikowski, Stephan
Venue
Scientific Reports
Published
2016-03-23
Volume
6
Issue
1
Pages
23352-23352
ISSN
2045-2322 (ISSN-L)
OpenAlex
W2334104499
Cited by
150
References
71
Citations by year
2026: 6 · 2025: 4 · 2024: 22 · 2023: 11 · 2022: 15 · 2021: 15 · 2020: 20 · 2019: 22 · 2018: 12 · 2017: 13 · 2016: 10
FWCI
9.16
Type
journal article
Language
en
Open access
Locations
  • Scientific Reports (publishedVersion, cc-by)
  • PubMed Central (publishedVersion, cc-by)
  • Repository KITopen (Karlsruhe Institute of Technology) (publishedVersion)
  • PubMed (publishedVersion)
  • DuEPublico (University of Duisburg-Essen) (submittedVersion, cc-by)
  • Universitätsbibliographie, Universität Duisburg-Essen (submittedVersion)
  • KITopen (other-oa)
Funders
  • Deutsche Forschungsgemeinschaft (BA 3580/18-1, KI 1263/15-1)
  • Bundesministerium für Bildung und Forschung (FKZ03X5523, 03X5523)
  • Universität Duisburg-Essen
Topics
  • Physical Sciences › Engineering › Biomedical Engineering › Laser-Ablation Synthesis of Nanoparticles
  • Physical Sciences › Materials Science › Electronic, Optical and Magnetic Materials › Gold and Silver Nanoparticles Synthesis and Applications
  • Physical Sciences › Materials Science › Materials Chemistry › Advanced Nanomaterials in Catalysis
Keywords
core-shell nanoparticles, pulsed laser ablation, phase segregation, acetone, methyl methacrylate, oxidation resistance, magnetic properties, plasmonics, nanoparticle synthesis

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