Pulsed Laser Ablation in Liquid (PLAL) offers a reproduceable method to manufacture nanoparticles (NPs) with a desired size distribution and surface chemistry. While the synthesis of NPs in aqueous solutions is well understood, the effects of photodegradation and surface modification in organic solvents during PLAL warrants further investigation. The formation of a hot plasma during the laser ablation in water process results in hydroxyl formation that readily oxidizes metals such as iron, titanium, and copper. Herein, we investigate the structure and surface chemistry of these metals ablated in organic liquids, e.g. acetone, toluene, and alkanes, and relate these properties to characteristic features of the PLAL process such as plasma and cavitation bubble formation. A combination of time-resolved spectroscopy and shadowography are used to track the evolution of these features, while manipulating the level of dissolved gases in the liquid via a custom ablation chamber to control the degree of oxidation.<br/>

Formation of non-noble metals in organic liquids via laser ablation

Macromolecular Chemistry: The Second Century

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ACS Spring 2020 National Meeting & Expo

The official archive and repository for all ACS Meetings & Expositions abstracts and select posters or presentations.