Fe-carbide/Fe-oxide-based nanocomposites synthesized as magnetic nanomaterials via laser ablation synthesis in solution (LASiS)

Davis, Elijah M.; Ribeiro, Erick L.; Kamali, Saeed; Wen, Jianguo; Johnson, Charles; Johnson, Jacqueline; Khomami, Bamin; Mukherjee, Dibyendu

doi:10.1016/j.apsusc.2024.159682

Applied Surface Science

2024

DOI: 10.1016/j.apsusc.2024.159682

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Fe-carbide/Fe-oxide-based nanocomposites synthesized as magnetic nanomaterials via laser ablation synthesis in solution (LASiS)

Elijah M. Davis,

Erick L. Ribeiro,

Saeed Kamali

et al.

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Understanding Selectivity in Product Distributions from Laser Ablation of Organic Liquids

Harris,

Kaplan,

Aftel

et al. 2024

J. Phys. Chem. B

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Pulsed laser ablation in organic solvents is widely used to produce oxide-free metal and metal carbide nanoparticles, often with carbon coatings resulting from laser-induced reactions in the organic solvent. To gain insight into how the molecular structure of the solvent affects these reaction pathways, this work investigates ablation of the C 6 H 14 isomers n-hexane, 2-methylpentane, and 3-methylpentane through characterization of the gas and liquid products with mass spectrometry. Ablation of each C 6 H 14 isomer produces a distinct distribution of product molecular weights and isomers. 2-methylpentane preferentially produces C 3 and C 9 , whereas 3-methylpentane produces C 2 , C 4 , C 8 , and C 10 products. These preferential product distributions, along with the lack of such selectivity in n-hexane, arise from differences in the most favorable C−C bond scission pathways in each C 6 H 14 isomer. Moreover, the particular isomers of C 8 H 18 , C 9 H 20 , C 10 H 22 , and C 12 H 26 produced by ablation of each C 6 H 14 isomer indicate that the vast majority of reaction pathways involve addition reactions between a fragment radical and parent C 6 H 14 or between two C 6 H 14 molecules, without molecular rearrangement. This propensity toward direct addition suggests that the chemical reactions induced by ultrashort pulsed laser ablation proceed on faster time scales than those of radical rearrangements.

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Understanding Selectivity in Product Distributions from Laser Ablation of Organic Liquids

Harris,

Kaplan,

Aftel

et al. 2024

J. Phys. Chem. B

View full text Add to dashboard Cite

show abstract

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Fe-carbide/Fe-oxide-based nanocomposites synthesized as magnetic nanomaterials via laser ablation synthesis in solution (LASiS)

Cited by 1 publication

References 49 publications

Understanding Selectivity in Product Distributions from Laser Ablation of Organic Liquids

Understanding Selectivity in Product Distributions from Laser Ablation of Organic Liquids

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