Doping nanoparticles using pulsed laser ablation in a liquid containing the doping agent

Chemin, Arsène; Lam, Julien; Laurens, Gaétan; Trichard, Florian; Motto-Ros, Vincent; Ledoux, Gilles; Jarý, V.; Laguta, V. V.; Nikl, M.; Dujardin, Christophe; Amans, David

doi:10.1039/c9na00223e

Cited by 24 publications

(19 citation statements)

References 97 publications

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“…The emission spectrum of the Laser Induced Plasma (LIP) under water is characterized mainly by continuum radiation with possibly some resonance peaks of the element constituting the target [ 40 ]. The absence of the typical atomic spectral lines of the LIP expanding in a gaseous environment is due to the high density reached by the ablated matter under liquid confinement as discussed in [ 40 , 41 , 42 ]. In this case, the emission spectrum has a Planck-like shape that has been ascribed to the radiative recombination and that in turn is proportional to the blackbody law, although the spectrum is not related to any blackbody system.…”

Section: Lal Synthesis Methods: Principle Process Parameters and mentioning

confidence: 99%

“…The photoionization cross section at high density conditions, shows a smooth dependence on wavelength [ 42 ], so that its contribution can be considered constant in the range of photon energy investigated in the visible range, i.e., 1–3 eV. In the frame of this assumption and since, at fixed time N e and T are constant, Equation (5) becomes:

where G is a constant with respect to wavelength at each time of plasma lifetime since it represents a function depending on detection efficiency, on the electron number density and on plasma temperature, but not on the wavelength.…”

Section: Lal Synthesis Methods: Principle Process Parameters and mentioning

confidence: 99%

“…The photoionization cross section at high density conditions, shows a smooth dependence on wavelength [42], so that its contribution can be considered constant in the range of photon energy investigated in the visible range, i.e., 1-3 eV. In the frame of this assumption and since, at fixed time N e and T are constant, Equation 5becomes:…”

Section: Figure 2 Different Steps Of Laser Ablation In Liquid (Lal)mentioning

confidence: 99%

“…The generation of NPs with LAL still has some challenging aspects, such as the fabrication of NPs with a specific size and shape, the reduction of polydispersity and the increase of productivity [ 39 ]. Despite some unsolved problems of a physical, chemical and technical nature, several strategies have been proposed to overcome the above issues, including the selection of the appropriate liquid or stabilizing agent, the optimization of the focusing conditions and liquid levels, as well as the adoption of scanning and fluid dynamics strategies by different liquid handling configurations [ 40 , 41 , 42 , 43 , 44 ] and the postirradiation of colloids [ 45 ].…”

Section: Introductionmentioning

confidence: 99%

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Nanoparticles Engineering by Pulsed Laser Ablation in Liquids: Concepts and Applications

et al. 2020

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Laser synthesis emerges as a suitable technique to produce ligand-free nanoparticles, alloys and functionalized nanomaterials for catalysis, imaging, biomedicine, energy and environmental applications. In the last decade, laser ablation and nanoparticle generation in liquids has proven to be a unique and efficient technique to generate, excite, fragment and conjugate a large variety of nanostructures in a scalable and clean way. In this work, we give an overview on the fundamentals of pulsed laser synthesis of nanocolloids and new information about its scalability towards selected applications. Biomedicine, catalysis and sensing are the application areas mainly discussed in this review, highlighting advantages of laser-synthesized nanoparticles for these types of applications and, once partially resolved, the limitations to the technique for large-scale applications.

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Section: Lal Synthesis Methods: Principle Process Parameters and mentioning

confidence: 99%

Section: Lal Synthesis Methods: Principle Process Parameters and mentioning

confidence: 99%

“…The photoionization cross section at high density conditions, shows a smooth dependence on wavelength [42], so that its contribution can be considered constant in the range of photon energy investigated in the visible range, i.e., 1-3 eV. In the frame of this assumption and since, at fixed time N e and T are constant, Equation 5becomes:…”

Section: Figure 2 Different Steps Of Laser Ablation In Liquid (Lal)mentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Nanoparticles Engineering by Pulsed Laser Ablation in Liquids: Concepts and Applications

et al. 2020

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“…To increase the nanoparticle yield from oxide targets in LAL, unwanted byproducts in the form of microparticles should be minimized, which is achieved by using mechanically stable targets. In this way, challenging materials like ternary oxide nanoparticles [29,30] or doped nanoparticles [31,32] can be produced.…”

Section: Introductionmentioning

confidence: 99%

Manipulation of the Size and Phase Composition of Yttrium Iron Garnet Nanoparticles by Pulsed Laser Post-Processing in Liquid

et al. 2020

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Modification of the size and phase composition of magnetic oxide nanomaterials dispersed in liquids by laser synthesis and processing of colloids has high implications for applications in biomedicine, catalysis and for nanoparticle-polymer composites. Controlling these properties for ternary oxides, however, is challenging with typical additives like salts and ligands and can lead to unwanted byproducts and various phases. In our study, we demonstrate how additive-free pulsed laser post-processing (LPP) of colloidal yttrium iron oxide nanoparticles using high repetition rates and power at 355 nm laser wavelength can be used for phase transformation and phase purification of the garnet structure by variation of the laser fluence as well as the applied energy dose. Furthermore, LPP allows particle size modification between 5 nm (ps laser) and 20 nm (ns laser) and significant increase of the monodispersity. Resulting colloidal nanoparticles are investigated regarding their size, structure and temperature-dependent magnetic properties.

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Room‐Temperature Laser Synthesis in Liquid of Oxide, Metal‐Oxide Core‐Shells, and Doped Oxide Nanoparticles

Amendola

Amans

Ishikawa

et al. 2020

Chemistry A European J

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232

186

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Although oxide nanoparticles are ubiquitous in science and technology, a multitude of compositions, phases, structures, and doping levels exist, each one requiring a variety of conditions for their synthesis and modification. Besides, experimental procedures are frequently dominated by high temperatures or pressures and by chemical contaminants or waste. In recent years, laser synthesis of colloids emerged as a versatile approach to access a library of clean oxide nanoparticles relying on only four main strategies running at room temperature and ambient pressure: laser ablation in liquid, laser fragmentation in liquid, laser melting in liquid and laser defect‐engineering in liquid. Here, established laser‐based methodologies are reviewed through the presentation of a panorama of oxide nanoparticles which include pure oxidic phases, as well as unconventional structures like defective or doped oxides, non‐equilibrium compounds, metal‐oxide core–shells and other anisotropic morphologies. So far, these materials showed several useful properties that are discussed with special emphasis on catalytic, biomedical and optical application. Yet, given the endless number of mixed compounds accessible by the laser‐assisted methodologies, there is still a lot of room to expand the library of nano‐crystals and to refine the control over products as well as to improve the understanding of the whole process of nanoparticle formation. To that end, this review aims to identify the perspectives and unique opportunities of laser‐based synthesis and processing of colloids for future studies of oxide nanomaterial‐oriented sciences.

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Doping nanoparticles using pulsed laser ablation in a liquid containing the doping agent

Abstract: While doping is crucial for numerous technological applications, its control remains difficult especially when the material is reduced down to the nanometric scale. We suggest a new way to dope nanoparticles using laser ablation in liquids.

Cited by 24 publications

References 97 publications

Nanoparticles Engineering by Pulsed Laser Ablation in Liquids: Concepts and Applications

Nanoparticles Engineering by Pulsed Laser Ablation in Liquids: Concepts and Applications

Manipulation of the Size and Phase Composition of Yttrium Iron Garnet Nanoparticles by Pulsed Laser Post-Processing in Liquid

Room‐Temperature Laser Synthesis in Liquid of Oxide, Metal‐Oxide Core‐Shells, and Doped Oxide Nanoparticles

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