Synthesis and properties of Ag/ZnO core/shell nanostructures prepared by excimer laser ablation in liquid

Zhao, Yan; Li, Shuanghao; Zeng, Yong; Jiang, Yijian

doi:10.1063/1.4928287

Cited by 39 publications

(12 citation statements)

References 29 publications

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“…Singh and Soni found that increasing the irradiation period of Ag and Al NPs in water caused the particles first to evolve into a network-type structure, then into core–shell structures, and finally into rattle-type Ag@Al 2 O 3 because of the Kirkendall effect . Varying the ablation period of gold or zinc targets in LAL-synthesized Ag colloids allowed the modulation of the Au or ZnO shell thickness of the resultant Ag@Au , and Ag@ZnO core–shell structures, respectively. Nevertheless, most studies on the processing time during LAL either focus on the concentration or supersaturation effects in batch reactors or trigger LFL processes that are naturally more pronounced at elevated concentrations.…”

Section: Material Process Liquid and Laser Parametersmentioning

confidence: 99%

“…Particles generated by LSPC, and especially LAL (elemental, alloy, and oxide particles), are also good candidates for the synthesis of hybrid composites. This method is termed two-step or consecutive LAL (laser ablation of another material inside the former LAL-synthesized colloidal solution) and has enabled the fabrication of doped/core–shell nanocomposites (e.g., Pt–TiO 2 , Ag–TiO 2 , Au–Si, Ag@ZnO, Al 2 O 3 @Ag, Al 2 O 3 @AgAu, and Ag@Au). These two-step LAL-generated composites can be further used as colloidal additives for the in situ conjugation synthesis of trimetallic composites by a third LAL step.…”

Section: Material Process Liquid and Laser Parametersmentioning

confidence: 99%

See 1 more Smart Citation

Laser Synthesis and Processing of Colloids: Fundamentals and Applications

2017

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Driven by functionality and purity demand for applications of inorganic nanoparticle colloids in optics, biology, and energy, their surface chemistry has become a topic of intensive research interest. Consequently, ligand-free colloids are ideal reference materials for evaluating the effects of surface adsorbates from the initial state for application-oriented nanointegration purposes. After two decades of development, laser synthesis and processing of colloids (LSPC) has emerged as a convenient and scalable technique for the synthesis of ligand-free nanomaterials in sealed environments. In addition to the high-purity surface of LSPC-generated nanoparticles, other strengths of LSPC include its high throughput, convenience for preparing alloys or series of doped nanomaterials, and its continuous operation mode, suitable for downstream processing. Unscreened surface charge of LSPC-synthesized colloids is the key to achieving colloidal stability and high affinity to biomolecules as well as support materials, thereby enabling the fabrication of bioconjugates and heterogeneous catalysts. Accurate size control of LSPC-synthesized materials ranging from quantum dots to submicrometer spheres and recent upscaling advancement toward the multiple-gram scale are helpful for extending the applicability of LSPC-synthesized nanomaterials to various fields. By discussing key reports on both the fundamentals and the applications related to laser ablation, fragmentation, and melting in liquids, this Article presents a timely and critical review of this emerging topic.

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Section: Material Process Liquid and Laser Parametersmentioning

confidence: 99%

Section: Material Process Liquid and Laser Parametersmentioning

confidence: 99%

Laser Synthesis and Processing of Colloids: Fundamentals and Applications

2017

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“…These were synthesized for the first time by laser ablation technique, using a 248 nm KrF excimer pulsed laser ablation in a solution. (Zhao et al, 2015) Other attempts of coating ZnO were also made, a comprehensive growth mechanism stating a general scheme was developed. (Sun et al, 2013) Polyvinylpyrrolidone (PVP) and 4-mercaptobenzoic acid were crucial in the synthesis of Au/ZnO core/shell nanoparticles.…”

Section: Synthesismentioning

confidence: 99%

A comprehensive study of synthesis and applications of core/shell nanoparticles

Tiwari¹,

Tripathi²,

Khare³

2021

Int. J. Eng. Sci. Tech

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When we consider matter at nanoscale, one of the most important aspects to be considered is that due to the small size of the particles, these have increased surface area to volume ratio. The large value of this ratio increases the dominance of the surface atoms of the nanoparticles in relation to those in its interior. A special category of materials at nanoscale level has gained popularity in the recent times due to their interesting properties and applications. When classified on the basis of structure, the types of core/shell particles can have a large variety. Each of this structural classification has its own importance, method of synthesis and application. The core/shell nanoparticles have some distinct features that is responsible for their importance. The properties of Core/shell nanoparticles are highly modified from that of their simple pure nanomaterials, thus they usually called highly functional materials. The introduction of a different crust layer over the core particle has many reasons, such as it helps in implementing surface modification, increases functionality, stability and dispersibility, control on the release of the core, lowering the consumption of precious materials, and so on. These nanostructures can have a number of combinations in close interaction, depending upon the selection of material used, which highly influences the end application. This paper has an overview of the present methods involved in synthesis and tunable factors responsible for their end applications. The development of metal/metal oxide core-shell nanoparticles has become popular nowadays due to their widespread use in catalysis and other environmental remedial applications.

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“…These materials have good surface plasmon resonance at their interface and the noble metal/semiconductor core/shell composite NS has been one of the most promising composite NSs of the recent decades [4].…”

Section: Introductionmentioning

confidence: 99%

The Effect of Surface Plasmon Resonances on Spherical Magneto-Plasmonic Fe3O4@Ag Core-Shell Nanoparticles

Yeneayehu

Senbeta

Mesfin

2021

Preprint

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In this work, the scattering, absorption, and extinction cross-sections of 𝐹𝑒3𝑂4@Ag core/shell spherical nanostructures embedded in a dielectric host matrix are investigated theoretically. Electrostatic approximation and Maxwell-Garnet effective medium theory are employed to obtain the effective electric permittivity and magnetic permeability, as well as the corresponding absorption, scattering, and extinction cross-sections. Likewise, for a fixed size of QDs (of radius 𝑎𝑠 = 10 nm) numerical analysis is performed to see the effect of varying the metal fraction (𝛽) and the permittivity (𝜀ℎ) of the host matrix on the magneto-plasmonic nanostructures. The results show that graphs of absorption, scattering, and extinction cross-sections as a function of wavelength have two sets of resonance peaks in the UV and visible regions. These sets of peaks arise due to the strong coupling of the surface plasmon oscillations of silver with the excitonic state of the semiconductor/dielectric at the inner (𝐹𝑒3𝑂4@Ag) and outer (Ag/host) interfaces. The absorption and scattering crosssections are blue-shifted in the first peak and red-shifted for the second set of peaks as 𝛽 increases. Similarly, the extinction cross-section possesses two sets of resonance peaks which are enhanced for an increase in 𝜀ℎ or decrease of 𝛽; keeping one of these two parameters constant at a time. The results obtained may be utilized in applications that incorporates both the plasmonic and magnetic effects in core/shell nanostructures.

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Synthesis and properties of Ag/ZnO core/shell nanostructures prepared by excimer laser ablation in liquid

Cited by 39 publications

References 29 publications

Laser Synthesis and Processing of Colloids: Fundamentals and Applications

Laser Synthesis and Processing of Colloids: Fundamentals and Applications

A comprehensive study of synthesis and applications of core/shell nanoparticles

The Effect of Surface Plasmon Resonances on Spherical Magneto-Plasmonic Fe3O4@Ag Core-Shell Nanoparticles

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