Generation of nanomaterials by reactive laser-synthesis in liquid

Batista, Laysa M. Frias; Nag, Ashish; Meader, Victoria Kathryn; Tibbetts, Katharine Moore

doi:10.1007/s11433-021-1835-x

Cited by 28 publications

(26 citation statements)

References 360 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Visible already for 1‐hexene, Tibbetts et al. recently reviewed that chemical properties pose a significant impact on decomposition during laser irradiation [88] . This can also be seen in the ablation of Au in i ‐hexane, which consists of 92 % methylpentane isomers, 4 % dimethylbutane isomers, and 4 % n ‐hexane.…”

Section: Resultsmentioning

confidence: 99%

“…Visible already for 1-hexene, Tibbetts et al recently reviewed that chemical properties pose a significant impact on decomposition during laser irradiation. [88] This can also be seen in the ablation of Au in i-hexane, which consists of 92 % methylpentane isomers, 4 % dimethylbutane isomers, and 4 % nhexane. The ablation rate is higher for n-than i-hexane, while the gas formation rate in i-hexane is twice as high as nhexane's, indicating higher shielding effects and thereby a lower ablation rate.…”

Section: Impact Of the Constitution -Branched Hydrocarbonsmentioning

confidence: 89%

See 1 more Smart Citation

Impact of Chemical and Physical Properties of Organic Solvents on the Gas and Hydrogen Formation during Laser Synthesis of Gold Nanoparticles

et al. 2023

View full text Add to dashboard Cite

Laser ablation in liquids has been established as a scalable preparation method of nanoparticles for various applications. Particularly for materials prone to oxidation, it is established to suppress oxidation by using organic solvents as a liquid medium. While this often functionalizes the nanoparticles with a carbon shell, the related chemical processes that result from laser-induced decomposition reactions of the organic solvents remain uncertain. Using a systematic series of C 6 solvents complemented by n-pentane and n-heptane during the nano-second laser ablation of gold, the present study focuses on the solvent-dependent influence on gas formation rates, nanoparticle productivity, and gas composition. Both the permanent gas and hydrogen formation was found to be linearly correlated with ablation rate, ΔH vap , and pyrolysis activation energy. Based on this, a decomposition pathway linked to pyrolysis is proposed allowing the deduction of first selection rules for solvents that influence the formation of carbon or permanent gases.

show abstract

Section: Resultsmentioning

confidence: 99%

Section: Impact Of the Constitution -Branched Hydrocarbonsmentioning

confidence: 89%

Impact of Chemical and Physical Properties of Organic Solvents on the Gas and Hydrogen Formation during Laser Synthesis of Gold Nanoparticles

et al. 2023

View full text Add to dashboard Cite

show abstract

“…It is known that the presence of nanosized objects in the medium significantly increases the probability of optical breakdown. In the literature, the influence of metal nanoparticles on the probability of optical breakdown and the main physicochemical processes occurring during optical breakdown are usually studied [ 24 , 25 , 26 , 27 ]. It has been established that the course of physicochemical processes occurring during optical breakdown of colloidal solutions of nanoparticles and protein molecules is different.…”

Section: Discussionmentioning

confidence: 99%

Effect of Laser-Induced Optical Breakdown on the Structure of Bsa Molecules in Aqueous Solutions: An Optical Study

et al. 2022

View full text Add to dashboard Cite

The influence of laser radiation of a typical surgical laser on the physicochemical properties of the Bovine Serum Albumin (BSA) protein was studied. It was established that the physicochemical characteristics of optical breakdown weakly depend on the concentration of protein molecules. At the same time, the patterns observed for an aqueous solution of BSA irradiated with a laser for different time periods were extremely similar to the classical ones. It was established that after exposure to laser radiation, the optical density of protein solutions increases. At the same time, the intensity of BSA fluorescence due to aromatic amino acid residues decreases insignificantly after exposure to laser radiation. In this case, the position of the excitation and emission maximum does not change, and the shape of the fluorescence spot on 3D maps also does not change significantly. On the Raman spectrum after exposure to laser radiation, a significant decrease in 1570 cm−1 was observed, which indicates the degradation of α-helices and, as a result, partial denaturation of BSA molecules. Partial denaturation did not significantly change the total area of protein molecules, since the refractive index of solutions did not change significantly. However, in BSA solutions, after exposure to laser radiation, the viscosity increased, and the pseudoplasticity of aqueous solutions decreased. In this case, there was no massive damage to the polypeptide chain; on the contrary, when exposed to optical breakdown, intense aggregation was observed, while aggregates with a size of 400 nm or more appeared in the solution. Thus, under the action of optical breakdown induced by laser radiation in a BSA solution, the processes of partial denaturation and aggregation prevail, aromatic amino acid residues are damaged to a lesser extent, and fragmentation of protein molecules is not observed.

show abstract

“…Laser synthesis in liquid has emerged over the past two decades as a promising route to diverse nanomaterials with metastable chemical compositions and phases that are difficult to produce by conventional chemical routes. − Organic liquid media are widely used for the synthesis of metal nanoparticles by laser ablation in liquid (LAL) − and laser reduction in liquid (LRL) − to limit the formation of oxide byproducts. These synthesis routes often produce metal nanoparticles with graphitic or amorphous carbon shells that are grown from carbon species produced by the decomposition of the organic liquid. − …”

Section: Introductionmentioning

confidence: 99%

How Pulse Width Affects Laser Ablation of Organic Liquids

Frias Batista,

Kaplan,

Weththasingha

et al. 2023

J. Phys. Chem. B

Self Cite

View full text Add to dashboard Cite

Laser synthesis in liquids is often carried out in organic solvents to prevent oxidation of metals during nanoparticle generation and to produce tailored carbon-based nanomaterials. This work investigates laser ablation of neat organic liquids acetone, ethanol, n-hexane, and toluene with pulse widths ranging from 30 fs to 4 ps through measurements of reaction kinetics and characterization of the ablation products with optical spectroscopy and mass spectrometry. Increasing the pulse width from 30 fs to 4 ps impacts both the reaction kinetics and product distributions, suppressing the formation of solvent molecule dimers and oxidized molecules while enhancing the yields of gaseous molecules, sp-hybridized carbons, and fluorescent carbon dots. The observed trends are explained in the context of established ionization mechanisms and cavitation bubble dynamical processes that occur during ultrashort pulsed laser ablation of liquid media. The results of this work have important implications both for controlling the formation of carbon shells around metal nanoparticles during the ablation of solid targets in liquid and producing carbon nanomaterials directly from the ablation of organic liquids without a solid target.

show abstract

Generation of nanomaterials by reactive laser-synthesis in liquid

Cited by 28 publications

References 360 publications

Impact of Chemical and Physical Properties of Organic Solvents on the Gas and Hydrogen Formation during Laser Synthesis of Gold Nanoparticles

Impact of Chemical and Physical Properties of Organic Solvents on the Gas and Hydrogen Formation during Laser Synthesis of Gold Nanoparticles

Effect of Laser-Induced Optical Breakdown on the Structure of Bsa Molecules in Aqueous Solutions: An Optical Study

How Pulse Width Affects Laser Ablation of Organic Liquids

Contact Info

Product

Resources

About