In situ high-temperature TEM observation of material escape from a surface of CoFeNi/Cu/ZrAlO composite into the amorphous carbon layer

Romankov, S.; Park, Y.C.

doi:10.1016/j.jallcom.2015.01.214

Cited by 9 publications

(5 citation statements)

References 43 publications

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“…In coalescence, for surface diffusion, a quasi-liquid state of substance is necessary and is defined as an intermediate state or premelting between a solid and a liquid, possessing characteristics of both states. ,, This state, sometimes termed liquid-like behavior, was observed at low and intermediate temperatures for Au NP growth on a SiO 2 surface and Ag NP growth on TiO 2 …”

Section: Resultsmentioning

confidence: 99%

Formation of Ag Nanoparticles on β-Ag₂WO₄ through Electron Beam Irradiation: A Synergetic Computational and Experimental Study

et al. 2016

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Registro de acceso restringido Este recurso no está disponible en acceso abierto por política de la editorial. No obstante, se puede acceder al texto completo desde la Universitat Jaume I o si el usuario cuenta con suscripción. Registre d'accés restringit Aquest recurs no està disponible en accés obert per política de l'editorial. No obstant això, es pot accedir al text complet des de la Universitat Jaume I o si l'usuari compta amb subscripció. Restricted access item This item isn't open access because of publisher's policy. The full--text version is only available from Jaume I University or if the user has a running suscription to the publisher's contents.

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Section: Resultsmentioning

confidence: 99%

Formation of Ag Nanoparticles on β-Ag₂WO₄ through Electron Beam Irradiation: A Synergetic Computational and Experimental Study

et al. 2016

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Section: Methodsmentioning

confidence: 99%

“…In situ transmission electron microscopy (TEM) experiments were performed using a JEM-3011 HR (JEOL) electron microscope equipped with a modified heating and gas injection system. 35 The equipment was operated with a constant electron energy of 300 keV. We obtained the in situ TEM images by exposing the sample to 100% CO 2 gas (vacuum to 70 mbar) and elevated temperatures (room temperature to 430 °C).…”

Section: ■ Experimental Sectionmentioning

confidence: 99%

In Situ Observation of Carbon Dioxide Capture on Pseudo-Liquid Eutectic Mixture-Promoted Magnesium Oxide

Lee

Triviño

Hwang

et al. 2018

ACS Appl. Mater. Interfaces

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Eutectic mixtures of alkali nitrates are known to increase the sorption capacity and kinetics of MgO-based sorbents. Underlying principles and mechanisms for CO capture on such sorbents have already been established; however, real-time observation of the system was not yet accomplished. In this work, we present the direct-observation of the CO capture phenomenon on a KNO-LiNO eutectic mixture (EM)-promoted MgO sample, denoted as KLM, via in situ transmission electron microscopy (in situ TEM). Results revealed that the pseudoliquid EM undergoes structural rearrangement as MgCO evolves from the surface of MgO, resulting in surface roughening and evolution of cloudy structures that stay finely distributed after regeneration. From this, we propose a nucleation and structural rearrangement scheme for MgCO and EM, which involves the rearrangement of bulk EM to evenly distributed EM clusters due to MgCO saturation as adsorption proceeds. We also conducted studies on the interface between EM over solid MgO and MgCO formed during sorption, which further clarifies the interaction between MgO and EM. This study provides better insight into the sorption and regeneration mechanism, as well as the structural rearrangements involved in EM-promoted sorbents by basing not only on intrinsic evolutions but also on real-time observation of the system as a whole.

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“…Romankov and Park [58] approached the problem of C contribution to in situ annealing experiments from a very different starting point, i.e., structural studies and evolution of nanolaminated composite materials against temperature, and suggested an unconventional use of the carbon layer. By annealing a crystalline/amorphous nanocomposite (CoFeNi/Cu/ ZrAlO)/C/W lamellar sample, they took advantage of the intermediate amorphous C layer to observe the out-diffusion of atomic species from all the layers and uses it as an in situ "reaction chamber" where those species could form new HSs or grow new phases.…”

Section: New Directions and Perspectives Of In Situ Tem Annealingmentioning

confidence: 99%

The New Youth of the In Situ Transmission Electron Microscopy

Casu¹,

Sogne²,

Genovese³

et al. 2016

Microscopy and Analysis

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The idea of iσ situ transmission electron microscopy TEM and its possible ramifications were proposed at the very dawn of electron microscopy, but the translation from theory to practice encountered many technological setbacks, which hindered the feasibility of the most elaborated approaches until recent times. However, the several technological improvements achieved in the last years filled this gap, allowing the direct observation of the dynamic response of materials to external stimuli under a vast range of conditions going from vacuum to gaseous or liquid environment. This resulted in a blossoming of the iσ situ TEM and scanning TEM STEM techniques to a new youth for a vast, growing range of applications, which cannot be rightfully detailed in a short span therefore, this chapter should be intended as a guide highlighting a selection of the most inspiring, recently achieved results.

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In situ high-temperature TEM observation of material escape from a surface of CoFeNi/Cu/ZrAlO composite into the amorphous carbon layer

Cited by 9 publications

References 43 publications

Formation of Ag Nanoparticles on β-Ag₂WO₄ through Electron Beam Irradiation: A Synergetic Computational and Experimental Study

Formation of Ag Nanoparticles on β-Ag₂WO₄ through Electron Beam Irradiation: A Synergetic Computational and Experimental Study

In Situ Observation of Carbon Dioxide Capture on Pseudo-Liquid Eutectic Mixture-Promoted Magnesium Oxide

The New Youth of the In Situ Transmission Electron Microscopy

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In situ high-temperature TEM observation of material escape from a surface of CoFeNi/Cu/ZrAlO composite into the amorphous carbon layer

Cited by 9 publications

References 43 publications

Formation of Ag Nanoparticles on β-Ag2WO4 through Electron Beam Irradiation: A Synergetic Computational and Experimental Study

Formation of Ag Nanoparticles on β-Ag2WO4 through Electron Beam Irradiation: A Synergetic Computational and Experimental Study

In Situ Observation of Carbon Dioxide Capture on Pseudo-Liquid Eutectic Mixture-Promoted Magnesium Oxide

The New Youth of the In Situ Transmission Electron Microscopy

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Product

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Formation of Ag Nanoparticles on β-Ag₂WO₄ through Electron Beam Irradiation: A Synergetic Computational and Experimental Study

Formation of Ag Nanoparticles on β-Ag₂WO₄ through Electron Beam Irradiation: A Synergetic Computational and Experimental Study