Next Article in Journal
Nanomaterials and Nanotechnology in Wastewater Treatment
Previous Article in Journal
Hydrothermal Synthesis of Iridium-Substituted NaTaO3 Perovskites
Previous Article in Special Issue
Tailoring Mesoporous Titania Features by Ultrasound-Assisted Sol-Gel Technique: Effect of Surfactant/Titania Precursor Weight Ratio
Communication

On the Use of Laser Fragmentation for the Synthesis of Ligand-Free Ultra-Small Iron Nanoparticles in Various Liquid Environments

1
Institute for Nanomaterials, Advanced Technologies and Innovation, Technical University of Liberec, Studentská 1402/2, 461 17 Liberec, Czech Republic
2
Centre of Polymer Systems, University Institute, Tomas Bata University in Zlín, Třída T. Bati 5678, 760 01 Zlín, Czech Republic
3
Faculty of Mechanical Engineering, Silesian University of Technology, Konarskiego 18 a St., 44-100 Gliwice, Poland
4
Department of Chemical Sciences, University of Padova, via Marzolo 1, I-35131 Padova, Italy
*
Author to whom correspondence should be addressed.
Academic Editor: Ion N. Mihailescu
Nanomaterials 2021, 11(6), 1538; https://doi.org/10.3390/nano11061538
Received: 30 April 2021 / Revised: 8 June 2021 / Accepted: 9 June 2021 / Published: 10 June 2021
Traditionally, the synthesis of nanomaterials in the ultra-small size regime (1–3 nm diameter) has been linked with the employment of excessive amounts of hazardous chemicals, inevitably leading to significant environmentally detrimental effects. In the current work, we demonstrate the potential of laser fragmentation in liquids (LFL) to produce highly pure and stable iron ultra-small nanoparticles. This is carried out by reducing the size of carbonyl iron microparticles dispersed in various polar solvents (water, ethanol, ethylene glycol, polyethylene glycol 400) and liquid nitrogen. The explored method enables the fabrication of ligand-free iron oxide ultra-small nanoparticles with diameter in the 1–3 nm range, a tight size distribution, and excellent hydrodynamic stability (zeta potential > 50 mV). The generated particles can be found in different forms, including separated ultra-small NPs, ultra-small NPs forming agglomerates, and ultra-small NPs together with zero-valent iron, iron carbide, or iron oxide NPs embedded in matrices, depending on the employed solvent and their dipolar moment. The LFL technique, aside from avoiding chemical waste generation, does not require any additional chemical agent, other than the precursor microparticles immersed in the corresponding solvent. In contrast to their widely exploited chemically synthesized counterparts, the lack of additives and chemical residuals may be of fundamental interest in sectors requiring colloidal stability and the largest possible number of chemically active sites, making the presented pathway a promising alternative for the clean design of new-generation nanomaterials. View Full-Text
Keywords: iron nanoparticles; ultra-small nanoparticles; nZVI; stabilization effect; laser fragmentation in liquid iron nanoparticles; ultra-small nanoparticles; nZVI; stabilization effect; laser fragmentation in liquid
Show Figures

Graphical abstract

MDPI and ACS Style

Havelka, O.; Cvek, M.; Urbánek, M.; Łukowiec, D.; Jašíková, D.; Kotek, M.; Černík, M.; Amendola, V.; Torres-Mendieta, R. On the Use of Laser Fragmentation for the Synthesis of Ligand-Free Ultra-Small Iron Nanoparticles in Various Liquid Environments. Nanomaterials 2021, 11, 1538. https://doi.org/10.3390/nano11061538

AMA Style

Havelka O, Cvek M, Urbánek M, Łukowiec D, Jašíková D, Kotek M, Černík M, Amendola V, Torres-Mendieta R. On the Use of Laser Fragmentation for the Synthesis of Ligand-Free Ultra-Small Iron Nanoparticles in Various Liquid Environments. Nanomaterials. 2021; 11(6):1538. https://doi.org/10.3390/nano11061538

Chicago/Turabian Style

Havelka, Ondřej, Martin Cvek, Michal Urbánek, Dariusz Łukowiec, Darina Jašíková, Michal Kotek, Miroslav Černík, Vincenzo Amendola, and Rafael Torres-Mendieta. 2021. "On the Use of Laser Fragmentation for the Synthesis of Ligand-Free Ultra-Small Iron Nanoparticles in Various Liquid Environments" Nanomaterials 11, no. 6: 1538. https://doi.org/10.3390/nano11061538

Find Other Styles
Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Article Access Map by Country/Region

1
Back to TopTop