Results 21 to 30 of about 2,016,366 (274)
Atomistic details of oxide surfaces and surface oxidation: the example of copper and its oxides [PDF]
Surface Science Reports 70 (2015) 424-447, 2015 The oxidation and corrosion of metals are fundamental problems in materials science and technology that have been studied using a large variety of experimental and computational techniques. Here we review some of the recent studies that have led to significant advances in our atomic-level understanding of copper oxide, one of the most studied and best ...
arxiv +1 more source
Nature Communications, 2019 Bridging homogeneous and heterogeneous catalysis is a long-term pursuit in the field of catalysis. Here, the authors present results on integration of nano- and molecular catalysis via catalytic synthesis of nitrogen doped carbon layers on AlOx supported
Yajuan Wu +5 more
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Surface oxidation of liquid Sn [PDF]
Surf. Sci. 575, 223 (2005), 2004 We report the results of an x-ray scattering study that reveals oxidation kinetics and formation of a previously unreported crystalline phase of SnO at the liquid-vapour interface of Sn. Our experiments reveal that the pure liquid Sn surface does not react with molecular oxygen below an activation pressure of \~5.0*10-6 Torr.
arxiv +1 more source
Iodine-catalyzed diazo activation to access radical reactivity
Nature Communications, 2018 Radical reactivity of diazo compounds, useful organic building blocks, is yet underexplored. Here, the authors report an iodine-catalyzed radical activation of diazo compounds affording a variety of substituted cyclopropanes, pyrroles and epoxides under ...
Pan Li +5 more
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Strain-induced ferroelectricity in simple rocksalt binary oxides [PDF]
Physical Review Letters 104, 037601 (2010), 2009 The alkaline earth binary oxides adopt a simple rocksalt structure and form an important family of compounds because of their large presence in the earth's mantle and their potential use in microelectronic devices. In comparison to the class of multifunctional ferroelectric perovskite oxides, however, their practical applications remain limited and the
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Compositional Analysis of the High Molecular Weight Ethylene Oxide Propylene Oxide Copolymer by MALDI Mass Spectrometry [PDF]
, 2012 The composition of narrow distribution poly ethylene oxide-propylene oxide copolymer (Mw ~ 8700 Da) was studied using matrix assisted laser desorption ionization (MALDI) mass spectrometry. The ethylene oxide-propylene oxide copolymer produced oligomers separated by 14 Da. The average resolving power over the entire spectrum was 28,000.
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Dissociative adsorption of methane on surface oxide structures of Pd-Pt alloys [PDF]
J. Phys. Chem. C, 2009, 113 (50), pp 21097-21105, 2010 The dissociative adsorption of methane on variously oxidized Pd, Pt and Pd-Pt surfaces is investigated using density-functional theory, as a step towards understanding the combustion of methane on these materials. For Pd-Pt alloys, models of surface oxide structures are built on the basis of known oxides on Pd and Pt.
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CO oxidation on Pd(100) at technologically relevant pressure conditions: A first-principles kinetic Monte Carlo study [PDF]
, 2008 The possible importance of oxide formation for the catalytic activity of transition metals in heterogenous oxidation catalysis has evoked a lively discussion over the recent years. On the more noble transition metals (like Pd, Pt or Ag) the low stability of the common bulk oxides suggests primarily sub-nanometer thin oxide films, so-called surface ...
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Simple self-gettering differential-pump for minimizing source oxidation in oxide-MBE environment [PDF]
J. Vac. Sci. Technol. A 29, 041505 (2011), 2011 Source oxidation of easily oxidizing elements such as Ca, Sr, Ba, and Ti in an oxidizing ambient leads to their flux instability and is one of the biggest problems in the multi-elemental oxide Molecular Beam Epitaxy technique. Here we report a new scheme that can completely eliminate the source oxidation problem: a self-gettering differential pump ...
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A facile strategy for incorporation of PtCo alloy into UiO-66-NH2 for cinnamaldehyde hydrogenation
Catalysis Communications, 2023 As a material with multifunctional ligands, metal-organic frameworks (MOFs) can effectively regulate the electronic and geometric state of supported metal nanoparticles (MNPs).
Haiyu Shen +6 more
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