Articles with "near ambient" as a keyword



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Impact of Oxygen Non‐Stoichiometry on Near‐Ambient Temperature Ionic Mobility in Polaronic Mixed‐Ionic‐Electronic Conducting Thin Films

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Published in 2021 at "Advanced Functional Materials"

DOI: 10.1002/adfm.202005640

Abstract: Mixed ionic and electronic conducting (MIEC) oxides are an essential material class for a variety of nanoelectronic, energy, and catalyst applications. These materials simultaneously conduct both electronic and ionic species, enabling them to be used… read more here.

Keywords: electronic conducting; ionic electronic; impact oxygen; mixed ionic ... See more keywords
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Reversible Oxygen‐Driven Nickel Oxide Structural Transition on the Nickel(1 1 1) Surface at Near‐Ambient Pressure

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Published in 2018 at "ChemCatChem"

DOI: 10.1002/cctc.201702002

Abstract: NiO cluster formation with strictly controlled O2 exposure on a Ni(1 1 1) surface has been investigated extensively for decades under ultra‐high vacuum (UHV) conditions. The classical model of three‐stage Ni oxidation refers to the relationship between… read more here.

Keywords: ambient pressure; surface near; surface; nio cluster ... See more keywords
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In situ chemical and morphological characterization of copper under near ambient reduction and oxidation conditions

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Published in 2018 at "Surface and Interface Analysis"

DOI: 10.1002/sia.6276

Abstract: By using spatially resolved photoelectron spectromicroscopy, we have investigated the formation of Cu(I) oxide phases when a bulk Cu foil is exposed to a near ambient pressure of molecular oxygen. The experiment was performed by… read more here.

Keywords: oxidation; situ chemical; characterization copper; chemical morphological ... See more keywords
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Impact of wall boundary condition on scaling film cooling performance from near ambient to engine temperatures

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Published in 2018 at "International Journal of Thermal Sciences"

DOI: 10.1016/j.ijthermalsci.2018.06.004

Abstract: Abstract The present work computationally examines the scaling of a fan-shaped hole's film-cooling performance from a near ambient temperature to an engine temperature on a flat plate. Heat flux distributions for both film-cooled and non-film-cooled… read more here.

Keywords: film cooling; engine; condition; cooling performance ... See more keywords
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A critical review on the definitions used to calculate the energy efficiency coefficients of water electrolysis cells working under near ambient temperature conditions

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Published in 2020 at "Journal of Power Sources"

DOI: 10.1016/j.jpowsour.2019.227350

Abstract: Abstract The accurate knowledge of the energy efficiency coefficient of near ambient temperature water electrolysis (Alkaline, PEM or AEM Electrolyzer) is a critical-point to estimate the total cost of electrolytic hydrogen. After describing the fundamentals… read more here.

Keywords: energy; water; ambient temperature; near ambient ... See more keywords
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Metallic Cobalt to Spinel Co3O4—Electronic Structure Evolution by Near-Ambient Pressure Photoelectron Spectroscopy

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Published in 2017 at "Journal of Physical Chemistry C"

DOI: 10.1021/acs.jpcc.7b06661

Abstract: In the present study, valence band (VB) and core level photoelectron spectroscopy was carried out to investigate the electronic structural changes from polycrystalline Co to spinel Co3O4, via CoO at near ambient pressures (NAP; ∼0.1… read more here.

Keywords: photoelectron spectroscopy; near ambient; spectroscopy; spinel co3o4 ... See more keywords
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New Insight into the Gas-Sensing Properties of CuOx Nanowires by Near-Ambient Pressure XPS

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Published in 2019 at "Journal of Physical Chemistry C"

DOI: 10.1021/acs.jpcc.9b09124

Abstract: This article presents an investigation of the sensing properties of chemiresistors based on Cu2O/CuO core-shell nanowires containing p - p´ heterojunctions. The nanowires were synthesized by a conventional hydrothermal method and used for the detection… read more here.

Keywords: ambient pressure; gas; new insight; near ambient ... See more keywords
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PEALD of HfO2 Thin Films: Precursor Tuning and a New Near-Ambient-Pressure XPS Approach to in Situ Examination of Thin-Film Surfaces Exposed to Reactive Gases.

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Published in 2019 at "ACS applied materials & interfaces"

DOI: 10.1021/acsami.9b07090

Abstract: A bottom-up approach starting with the development of new Hf precursors for plasma-enhanced atomic layer deposition (PEALD) processes for HfO2 followed by in situ thin-film surface characterization of HfO2 upon exposure to reactive gases via… read more here.

Keywords: ambient pressure; thin film; xps; reactive gases ... See more keywords
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Soft X-ray Heterogeneous Radiolysis of Pyridine in the Presence of Hydrated Strontium-Hydroxyhectorite and its Monitoring by Near-Ambient Pressure Photoelectron Spectroscopy

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Published in 2018 at "Scientific Reports"

DOI: 10.1038/s41598-018-24329-8

Abstract: The heterogeneous radiolysis of organic molecules in clays is a matter of considerable interest in astrochemistry and environmental sciences. However, little is known about the effects of highly ionizing soft X-rays. By combining monochromatized synchrotron… read more here.

Keywords: ambient pressure; pressure; pyridine; spectroscopy ... See more keywords
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Identifying chemical and physical changes in wide-gap semiconductors using real-time and near ambient-pressure XPS.

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Published in 2022 at "Faraday discussions"

DOI: 10.1039/d1fd00119a

Abstract: Photoelectron spectroscopy is a powerful characterisation tool for semiconductor surfaces and interfaces, providing in principle a correlation between the electronic band structure and surface chemistry along with quantitative parameters such as the electron affinity, interface… read more here.

Keywords: spectroscopy; near ambient; surface; wide gap ... See more keywords
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Ceria-Based Catalysts Studied by Near Ambient Pressure X-ray Photoelectron Spectroscopy: A Review

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Published in 2020 at "Catalysts"

DOI: 10.3390/catal10030286

Abstract: The development of better catalysts is a passionate topic at the forefront of modern science, where operando techniques are necessary to identify the nature of the active sites. The surface of a solid catalyst is… read more here.

Keywords: active sites; ambient pressure; pressure ray; ray photoelectron ... See more keywords