Laser-generated nanoparticles from Fe-based metallic glass in water and its amorphization control by pulsed laser processing

Document Type

Journal Article

Publication Title

Materials Today Chemistry

Volume

30

Publisher

Elsevier

School

Centre for Advanced Materials and Manufacturing / School of Engineering

RAS ID

60252

Funders

Alexander von Humboldt-Stiftung

Comments

Liang, S. X., Reusmann, M. E., Loza, K., Zerebecki, S., Zhang, L. C., Jia, Z., & Reichenberger, S. (2023). Laser-generated nanoparticles from Fe-based metallic glass in water and its amorphization control by pulsed laser processing. Materials Today Chemistry, 30, article 101544. https://doi.org/10.1016/j.mtchem.2023.101544

Abstract

The laser synthesis and processing of colloids represents a group of scalable and “green” synthesis methods of crystalline metal oxides, that have recently made encouraging progresses in preparing amorphous as well as defect-rich nanoparticles. The relevant conditions and mechanisms that allow the design of amorphous metal oxides (AMOs) remain unknown. Consequently, in this work the synthesis of Fe-based partially amorphous oxide nanoparticles (NPs) by pulsed laser ablation in water was studied. Furthermore, both laser pulse duration and the number of laser pulse in pulsed laser fragmentation in liquid (LFL) allow a precise control of amorphization of AMOs in water. Hereby, a high-fluence nanosecond-LFL provides a significantly higher amorphization rate, whereas picosecond-LFL always presents minor fractions of crystalline α-Fe even with a higher specific energy input and laser intensity. Consequently, the laser fluence required for the repeated melting and quenching of NP appears to be the decisive parameter to control amorphization. During laser synthesis and processing of colloids, the amorphization of AMOs appears to be linked to the apparent size reduction effect, while a complete full amorphization of AMOs may be attributed to the stronger oxidation effects. This work will stimulate future studies using laser-generated AMO NPs for further functional purposes.

DOI

10.1016/j.mtchem.2023.101544

Access Rights

subscription content

Link to Full Text

Share

 
COinS