Status and demand of research to bring laser generation of nanoparticles in liquids to maturity

Amans, David; Cai, Weiping; Barcikowski, Stephan

doi:10.1016/j.apsusc.2019.05.117

Cited by 72 publications

(41 citation statements)

References 173 publications

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“…Laser ablation in liquid (LAL) has recently emerged as a robust alternative synthesis route to myriad (supported) NPs that can overcome many challenges inherent in wet-chemical synthesis [16][17][18][19]. LAL involves focusing intense laser pulses onto a solid target immersed in liquid, which produces a localized plasma at the solid-liquid interface containing reactive electrons, radicals, and ions [20].…”

Section: Introductionmentioning

confidence: 99%

Controlling the morphology of copper-silica nanocomposites from laser ablation in liquid

John

Tibbetts

2020

Applied Surface Science

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Synthesis of copper-silica nanocomposites with controllable morphology and composition were produced with a one-step femtosecond reactive laser ablation in liquid (fs-RLAL) technique. The composite nanomaterials were generated by focusing femtosecond near-IR laser pulses onto a silicon wafer immersed in an aqueous copper(II) nitrate solution, with the solution pH adjusted using nitric acid or potassium hydroxide. Under acidic conditions (pH 3.0 and 5.4), little copper was incorporated in the predominantly silica product (1.4 and 1.5 wt.%). These acidic conditions yielded large ~30-80 nm silica particles, with some particles consisting of copper core/silica shell. In contrast, increasing the solution pH to 10.4 resulted in extremely high Cu loading of 31.5 wt.% and a composite product consisting of 1.5 nm copper clusters distributed throughout a matrix of amorphous silica and copper phyllosilicate. The relationship between the precursor solution pH and the product morphology and copper loading is attributed to the point of zero charge (PZC) of silica, in which the high solution pH allows for electrostatic adsorption to occur between the deprotonated silica clusters from the ablated silicon wafer and the copper hydroxide dimer formed in solution. File list (2) download file view on ChemRxiv CuSiO2_v7.pdf (4.09 MiB) download file view on ChemRxiv sicu_SI.pdf (1.16 MiB)

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Section: Introductionmentioning

confidence: 99%

Controlling the morphology of copper-silica nanocomposites from laser ablation in liquid

John

Tibbetts

2020

Applied Surface Science

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“…Laser ablation in liquid (LAL) is a convenient, reliable, and efficient technique to produce various types of colloidal nanomaterials, from monometallic nanoparticles (NPs) to functionalized composites [1][2][3][4][5][6][7][8][9]. This method is considered to be an environmentally friendly approach, as it uses a minimum volume of solvents (as media) and reagents to produce NPs with a clean surface, without generating big amounts of chemical waste or side products [1][2][3][4][5][6][7][8][9][10][11][12]. It is a versatile method that permits preparing a large number of diverse metal oxide, sulfide, and carbide NPs via laser-induced chemical reactions that take place in a limited zone of the reaction vessel [3,4].…”

Section: Introductionmentioning

confidence: 99%

“…In case of chemically inert metals, no reaction occurs, and bare metal NPs are produced [6][7][8][9]. The extremely high temperature gradient and quenching rates created in the reaction zone during LAL often lead to the formation of metastable phases or unique morphologies of nanomaterials, as well as defect-rich surfaces, which are the main reasons for the potential attractiveness of LAL-produced nanomaterials for catalysis and photocatalysis [7][8][9][10], optics and optoelectronics, sensing, and biomedical applications [1][2][3][4][5][6][11][12][13][14][15].…”

Section: Introductionmentioning

confidence: 99%

Hybrid TiO2-ZnO Nanomaterials Prepared Using Laser Ablation in Liquid

2020

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Hybrids of semiconductor nanomaterials often demonstrate properties that are superior to those of their components. In this study, we prepared hybrid nanomaterials of TiO2 and ZnO, which are among the most actively studied semiconductors, by means of millisecond-pulsed laser and analyzed how their morphology, particle size, and surface composition depend on preparation conditions. A series of nanomaterials were obtained via sequentially ablating Zn and Ti metal plates (in different sequences) in water, while laser pulses of lower (2.0 J/pulse) and higher (5.0 J/pulse) energy were applied. The properties of laser-produced hybrid TiO2-ZnO nanomaterials were shown to be governed by experimental conditions such as laser pulse width, pulse peak power, and reaction media (either pure water or colloid with nanoparticles). The morphology revealed nanospheres of TiO2 that decorate nanorods of ZnO or flower-like aggregates of zinc oxide. Intriguingly, after extended ablation time, titania was found to be self-doped with Ti3+ and Ti2+ ions, and the contribution of lower oxidation states of titanium could be controlled by the applied laser pulse energy. The physicochemical characteristics of hybrid nanomaterials were compared with pure ZnO and TiO2 prepared under the same laser conditions.

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“…Therefore, our study focuses on the preparation method of the feedstock material, starting with the preparation of a highly dispersed carbon colloid by laser synthesis and processing of colloids (LSPC) [38]. LSPC has become an established approach for the formation of metal and metal oxide nanoparticles [39] and was also reported by several researchers for the preparation of carbon colloids [40][41][42][43][44][45][46]. In the next step, a colloidal additivation process is used to adsorb the as-prepared laser-generated carbon nanoparticles on PA12 microparticles, directly in an aqueous dispersion.…”

Section: Introductionmentioning

confidence: 99%

Analysis of the Nanoparticle Dispersion and Its Effect on the Crystalline Microstructure in Carbon-Additivated PA12 Feedstock Material for Laser Powder Bed Fusion

et al. 2020

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Driven by the rapid development of additive manufacturing technologies and the trend towards mass customization, the development of new feedstock materials has become a key aspect. Additivation of the feedstock with nanoparticles is a possible route for tailoring the feedstock material to the printing process and to modify the properties of the printed parts. This study demonstrates the colloidal additivation of PA12 powder with laser-synthesized carbon nanoparticles at >95% yield, focusing on the dispersion of the nanoparticles on the polymer microparticle surface at nanoparticle loadings below 0.05 vol%. In addition to the descriptors “wt%” and “vol%”, the descriptor “surf%” is discussed for characterizing the quantity and quality of nanoparticle loading based on scanning electron microscopy. The functionalized powders are further characterized by confocal dark field scattering, differential scanning calorimetry, powder rheology measurements (avalanche angle and Hausner ratio), and regarding their processability in laser powder bed fusion (PBF-LB). We find that heterogeneous nucleation is induced even at a nanoparticle loading of just 0.005 vol%. Finally, analysis of the effect of low nanoparticle loadings on the final parts’ microstructure by polarization microscopy shows a nanoparticle loading-dependent change of the dimensions of the lamellar microstructures within the printed part.

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Status and demand of research to bring laser generation of nanoparticles in liquids to maturity

Cited by 72 publications

References 173 publications

Controlling the morphology of copper-silica nanocomposites from laser ablation in liquid

Controlling the morphology of copper-silica nanocomposites from laser ablation in liquid

Hybrid TiO2-ZnO Nanomaterials Prepared Using Laser Ablation in Liquid

Analysis of the Nanoparticle Dispersion and Its Effect on the Crystalline Microstructure in Carbon-Additivated PA12 Feedstock Material for Laser Powder Bed Fusion

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