研究目的
To develop a versatile method named laser ablation towards water (LATW) to rapidly and simply synthesize metallic and alloy micro/nano particles, even high-entropy-alloy nanoparticles (NPs).
研究成果
LATW is a flexible and versatile technique for the high-effective synthesis of MPs, NPs, and various alloy NPs, including high-entropy-alloy NPs. The method allows for the adjustment of bimetallic NPs content by the relative thickness ratio of bilayer film and can synthesize multiple alloy NPs by increasing the layers of coated metallic film.
研究不足
The study focuses on the synthesis of metallic and alloy micro/nano particles using LATW, but the scalability and cost-effectiveness for industrial applications are not discussed.
1：Experimental Design and Method Selection:
A nanosecond pulsed laser beam was used to ablate metallic films coated on a transparent glass substrate in the air or contacting with water to synthesize micro/nano particles.
2：Sample Selection and Data Sources:
Various metallic films (Cu, Au, Ag, Pt, Ni) with different thicknesses were used as samples.
3：List of Experimental Equipment and Materials:
A pulsed fiber laser carving machine (IPG, Germany), soda-lime glass substrates, and metallic films coated by DC magnetron sputtering deposition.
4：Experimental Procedures and Operational Workflow:
The laser beam passed through the glass substrate, ablated the metallic film, and synthesized particles into deionized water.
5：Data Analysis Methods:
SEM, TEM, EDS, UV-Vis spectra, and Raman spectra were used for characterization.
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