scholarly journals Hydrogenation of CO2 to Methanol on CeOx/Cu(111) and ZnO/Cu(111) Catalysts: Role of the Metal–Oxide Interface and Importance of Ce3+ Sites

2016 ◽  
Vol 120 (3) ◽  
pp. 1778-1784 ◽  
Author(s):  
Sanjaya D. Senanayake ◽  
Pedro J. Ramírez ◽  
Iradwikanari Waluyo ◽  
Shankhamala Kundu ◽  
Kumudu Mudiyanselage ◽  
...  
Keyword(s):  
Metal Oxide ◽  
Oxide Interface ◽  
Hydrogenation Of Co2

scholarly journals Hydrogenation of CO2 on ZnO/Cu(100) and ZnO/Cu(111) Catalysts: Role of Copper Structure and Metal–Oxide Interface in Methanol Synthesis

2017 ◽  
Vol 122 (2) ◽  
pp. 794-800 ◽  
Author(s):  
Robert M. Palomino ◽  
Pedro J. Ramírez ◽  
Zongyuan Liu ◽  
Rebecca Hamlyn ◽  
Iradwikanari Waluyo ◽  
...  
Keyword(s):  
Metal Oxide ◽  
Methanol Synthesis ◽  
Oxide Interface ◽  
Hydrogenation Of Co2 ◽  
Copper Structure

Role of Metal-Oxide Interface in Determining the Spin Polarization of Magnetic Tunnel Junctions

Science ◽  
1999 ◽  
Vol 286 (5439) ◽  
pp. 507-509 ◽  
Author(s):  
Jose Maria De Teresa ◽  
Agnès Barthélémy ◽  
Albert Fert ◽  
Jean Pierre Contour ◽  
François Montaigne ◽  
...  
Keyword(s):  
Electronic Structure ◽  
Metal Oxide ◽  
Spin Polarization ◽  
Tunnel Junctions ◽  
Magnetic Tunnel Junctions ◽  
Ferromagnetic Transition ◽  
Oxide Interface ◽  
Oxide Interfaces ◽  
Structure Of Metal

The role of the metal-oxide interface in determining the spin polarization of electrons tunneling from or into ferromagnetic transition metals in magnetic tunnel junctions is reported. The spin polarization of cobalt in tunnel junctions with an alumina barrier is positive, but it is negative when the barrier is strontium titanate or cerium lanthanite. The results are ascribed to bonding effects at the transition metal–barrier interface. The influence of the electronic structure of metal-oxide interfaces on the spin polarization raises interesting fundamental problems and opens new ways to optimize the magnetoresistance of tunnel junctions.

A Phenomenological Study of the Metal-Oxide Interface: The Role of Catalysis in Hydrogen Production from Renewable Resources

ChemSusChem ◽  
2008 ◽  
Vol 1 (11) ◽  
pp. 905-910 ◽  
Author(s):  
Hicham Idriss ◽  
Morgan Scott ◽  
Jordi Llorca ◽  
Sze C. Chan ◽  
William Chiu ◽  
...  
Keyword(s):  
Hydrogen Production ◽  
Metal Oxide ◽  
Renewable Resources ◽  
Phenomenological Study ◽  
Oxide Interface

scholarly journals The role of the metal/oxide interface in the growth of passive films in aqueous environments

2005 ◽  
Vol 47 (1) ◽  
pp. 247-256 ◽  
Author(s):  
Bernard Pieraggi ◽  
Barry MacDougall ◽  
Robert A. Rapp
Keyword(s):  
Metal Oxide ◽  
Passive Films ◽  
Oxide Interface ◽  
Aqueous Environments

CO Oxidation on Au Nanoparticles Supported on ZrO2: Role of Metal/Oxide Interface and Oxide Reducibility

ChemCatChem ◽  
2017 ◽  
Vol 9 (6) ◽  
pp. 1119-1127 ◽  
Author(s):  
Antonio Ruiz Puigdollers ◽  
Gianfranco Pacchioni
Keyword(s):  
Metal Oxide ◽  
Co Oxidation ◽  
Au Nanoparticles ◽  
Oxide Interface

Presence of metal-oxide interface enhanced photoluminescence from In–In2O3 core–shell nanorods

RSC Advances ◽  
2015 ◽  
Vol 5 (2) ◽  
pp. 1581-1586 ◽  
Author(s):  
Kavita Yadav ◽  
B. R. Mehta ◽  
J. P. Singh
Keyword(s):  
Metal Oxide ◽  
Indium Oxide ◽  
Core Shell ◽  
Oxide Interface ◽  
Oxide Interfaces ◽  
Enhanced Photoluminescence ◽  
Different Temperatures ◽  
Pl Emission

The photoluminescence (PL) properties of Indium Oxide (IO) and In–In2O3 core–shell nanorods have been studied at different temperatures in order to understand the role of metal–oxide interfaces and defects on PL emission.

scholarly journals Conversion of Methanol on Rutile TiO2 (110) and Tungsten Oxide Clusters: 2. The Role of Defects and Electron Transfer in Bifunctional Oxidic Photocatalysts

2021 ◽  
Author(s):  
Lars Mohrhusen ◽  
Jessica Kräuter ◽  
Katharina Al-Shamery
Keyword(s):  
Electron Transfer ◽  
Transition Metal ◽  
Metal Oxide ◽  
Tungsten Oxide ◽  
Organic Compounds ◽  
Uv Irradiation ◽  
Organic P ◽  
Rutile Tio2 ◽  
Metal Oxide Surfaces

The photochemical conversion of organic compounds on tailored transition metal oxide surfaces by (UV) irradiation has found wide applications ranging from the production of chemicals to the degradation of organic...

Prebiotic studies on the interaction of zirconia nanoparticles and ribose nucleotides and their role in chemical evolution

2021 ◽  
Vol 20 (2) ◽  
pp. 142-149
Author(s):  
Avnish Kumar Arora ◽  
Pankaj Kumar
Keyword(s):  
Electron Microscopy ◽  
Metal Oxide ◽  
Metal Oxides ◽  
Chemical Evolution ◽  
Ribonucleic Acid ◽  
Zirconium Oxide ◽  
Origins Of Life ◽  
Neutral Ph ◽  
Interaction Studies

AbstractStudies on the interaction of biomolecules with inorganic compounds, mainly mineral surfaces, are of great concern in identifying their role in chemical evolution and origins of life. Metal oxides are the major constituents of earth and earth-like planets. Hence, studies on the interaction of biomolecules with these minerals are the point of concern for the study of the emergence of life on different planets. Zirconium oxide is one of the metal oxides present in earth's crust as it is a part of several types of rocks found in sandy areas such as beaches and riverbeds, e.g. pebbles of baddeleyite. Different metal oxides have been studied for their role in chemical evolution but no studies have been reported about the role of zirconium oxide in chemical evolution and origins of life. Therefore, studies were carried out on the interaction of ribonucleic acid constituents, 5′-CMP (cytidine monophosphate), 5′-UMP (uridine monophosphate), 5′-GMP (guanosine monophosphate) and 5′-AMP (adenosine monophosphate), with zirconium oxide. Synthesized zirconium oxide particles were characterized by using vibrating sample magnetometer, X-Ray Diffraction (XRD), scanning electron microscopy (SEM) and transmission electron microscopy. Zirconia particles were in the nanometre range, from 14 to 27 nm. The interaction of zirconium oxide with ribonucleic acid constituents was performed in the concentration range of 5 × 10−5–300 × 10−5 M. Interaction studies were carried out in three mediums; acidic (pH 4.0), neutral (pH 7.0) and basic (pH 9.0). At neutral pH, maximum interaction was observed. The interaction of zirconium oxide with 5′-UMP was 49.45% and with 5′-CMP 67.98%, while with others it was in between. Interaction studies were Langmurian in nature. Xm and KL values were calculated. Infrared spectral studies of ribonucleotides, metal oxide and ribonucleotide–metal oxide adducts were carried out to find out the interactive sites. It was observed that the nitrogen base and phosphate moiety of ribonucleotides interact with the positive charge surface of metal oxide. SEM was also carried out to study the adsorption. The results of the present study favour the important role of zirconium oxide in concentrating the organic molecules from their dilute aqueous solutions in primeval seas.

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