Atom Probe Tomography of Au–Cu Bimetallic Nanoparticles Synthesized by Inert Gas Condensation

Yang, Qifeng; Danaie, Mohsen; Young, Neil P.; Broadley, Vicky; Joyce, D. E.; Martin, T.; Marceau, Éric; Moody, Michael P.; Bagot, Paul A.J.

doi:10.1021/acs.jpcc.9b09340

Cited by 7 publications

(4 citation statements)

References 39 publications

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“…In this process magnetron plasma sputtering is used [ 100 ]. Thermal vaporization source [ 68 ] with molecular dynamic [ 101 ] simulation at different temperature and pressure helps in the synthesis metal/alloy nanoparticles.…”

Section: Various Techniques For Nanoparticle Synthesismentioning

confidence: 99%

“…Yang et al. (2019), synthesized the (Au–Cu)-nanoparticles with high stability and sphericity [ 100 ].…”

Section: Various Techniques For Nanoparticle Synthesismentioning

confidence: 99%

“…High thermal energy and low pressure is required for vaporization, this is done with the help of sonicator. After this electro magnetic radiation and plasma activation is required to activate the reaction [ 100 ]. Huh et al.…”

Section: Various Techniques For Nanoparticle Synthesismentioning

confidence: 99%

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Nanotechnology and its challenges in the food sector: a review

Kumar

Mahajan

Kaur

et al. 2020

Materials Today Chemistry

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Antibacterial activity of nanoparticles has received significant attention worldwide because of their great physical and chemical stability, excellent magnetic properties, and large lattice constant values. These properties are predominate in the food science for enhancing the overall quality, shelf life, taste, flavor, process-ability, etc., of the food. Nanoparticles exhibit attractive antibacterial activity due to their increased specific surface area leading to enhanced surface reactivity. When nanoparticles are suspended in the biological culture, they encounter various biological interfaces, resulting from the presence of cellular moieties like DNA, proteins, lipids, polysaccharides, etc., which helps antibacterial properties in many ways. This paper reviews different methods used for the synthesis of nanoparticles but is specially focusing on the green synthesis methods owing to its non-toxic nature towards the environment. This review highlights their antibacterial application mainly in the food sector in the form of food-nanosensors, food-packaging, and food-additives. The possible mechanism of nanoparticles for their antibacterial behavior underlying the interaction of nano-particles with bacteria, (i) excessive ROS generation including hydrogen peroxide (H 2 O 2 ), OH − (hydroxyl radicals), and O − 2 2 (peroxide); and (ii) precipitation of nano-particles on the bacterial exterior; which, disrupts the cellular activities, resulting in membranes disturbance. All these phenomena results in the inhibition of bacterial growth. Along with this, their current application and future perspectives in the food sector are also discussed. Nanoparticles help in destroying not only pathogens but also deadly fungi and viruses. Most importantly it is required to focus more on the crop processing and its containment to stop the post-harvesting loss. So, nanoparticles can act as a smart weapon towards the sustainable move.

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Section: Various Techniques For Nanoparticle Synthesismentioning

confidence: 99%

“…Yang et al. (2019), synthesized the (Au–Cu)-nanoparticles with high stability and sphericity [ 100 ].…”

Section: Various Techniques For Nanoparticle Synthesismentioning

confidence: 99%

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Nanotechnology and its challenges in the food sector: a review

Kumar

Mahajan

Kaur

et al. 2020

Materials Today Chemistry

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“…However, not all materials of interest are fully consolidated or solid. Many recent studies have sought to apply APT to porous materials (El-Zoka et al, 2017; Mouton et al, 2017; Barroo et al, 2019), nanoparticles (Li et al, 2014; Yang et al, 2019; Lim et al, 2020), and materials with cracks (Meisnar et al, 2015) or voids (Wang et al, 2020). Leaving these pores and cracks open introduces stress concentrators that make specimen preparation difficult and complicate the reconstruction of the analyzed specimens due to trajectory aberrations and premature fractures during analysis (Pfeiffer et al, 2015).…”

Section: Introductionmentioning

confidence: 99%

A Liquid Metal Encapsulation for Analyzing Porous Nanomaterials by Atom Probe Tomography

Kim

El‐Zoka

Gault

2022

Microscopy and Microanalysis

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Analyzing porous (nano)materials via atom probe tomography has been notoriously difficult. Voids and pores act as concentrators of the electrostatic pressure, which results in premature specimen failure, and the electrostatic field distribution near voids leads to aberrations that are difficult to predict. In this study, we propose a new encapsulating method for porous samples using a low melting point Bi–In–Sn alloy, known as Field's metal. As a model material, we used porous iron made by direct-hydrogen reduction of single-crystalline wüstite. The complete encapsulation was performed using in situ heating on the stage of a scanning electron microscope. No visible corrosion nor dissolution of the sample occurred. Subsequently, specimens were shaped by focused ion-beam milling under cryogenic conditions at −190°C. The proposed approach is versatile and can be applied to provide good quality atom probe datasets from micro/nanoporous materials.

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Atom probe tomography of nanomaterials

Khan

Zheng

2023

Encyclopedia of Nanomaterials

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Atom Probe Tomography of Au–Cu Bimetallic Nanoparticles Synthesized by Inert Gas Condensation

Cited by 7 publications

References 39 publications

Nanotechnology and its challenges in the food sector: a review

Nanotechnology and its challenges in the food sector: a review

A Liquid Metal Encapsulation for Analyzing Porous Nanomaterials by Atom Probe Tomography

Atom probe tomography of nanomaterials

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