Effects of Size and Load on Transport Properties of Nanoscale Metal-Oxide Interfaces

2012 ◽  
Vol 1406 ◽  
Author(s):  
Ramsey Kraya
Keyword(s):  
Metal Oxide ◽  
Transport Properties ◽  
Classical Theory ◽  
Energy Barrier ◽  
Au Nanoparticles ◽  
Schottky Barriers ◽  
Nanometer Scale ◽  
Oxide Interfaces ◽  
Nanoscale Transport ◽  
Size And Structure

ABSTRACTWith interface sizes rapidly reducing to the nanometer scale, it has become vital to understand how size and structure can affect transport behavior between materials in order to tune the energy barrier for various applications. Here, the fabrication of Schottky Barriers between Au nanoparticles and doped SrTiO3 materials is reported. The effect of nanoparticle size on the transport properties is clearly evident providing an excellent opportunity to compare new theory on transport characteristics at the nanoscale to classical theory to determine the method that is most effective in predicting nanoscale transport properties.

STRUCTURE OF METAL-OXIDE INTERFACES

1985 ◽  
Vol 46 (C4) ◽  
pp. C4-135-C4-140 ◽  
Author(s):  
M. Leseur ◽  
B. Pieraggi
Keyword(s):  
Metal Oxide ◽  
Oxide Interfaces ◽  
Structure Of Metal

METAL-OXIDE INTERFACES OBTAINED BY SELECTIVE CHEMICAL REDUCTION OF LAMELLAR OXIDE-OXIDE EUTECTIC STRUCTURES

1990 ◽  
Vol 51 (C1) ◽  
pp. C1-781-C1-787
Author(s):  
B. BONVALOT ◽  
G. DHALENNE ◽  
F. MILLOT ◽  
A. REVCOLEVSCHI
Keyword(s):  
Metal Oxide ◽  
Chemical Reduction ◽  
Oxide Interfaces ◽  
Selective Chemical

INTERACTIONS AT METAL/OXIDE AND OXIDE/OXIDE INTERFACES STUDIED BY ULTRATHIN FILM GROWTH ON SINGLE-CRYSTAL OXIDE SUBSTRATES

1995 ◽  
Vol 02 (01) ◽  
pp. 109-126 ◽  
Author(s):  
ROBERT J. LAD
Keyword(s):  
Metal Oxide ◽  
Single Crystal ◽  
Film Growth ◽  
Ultrathin Film ◽  
Reaction Products ◽  
Impurity Effects ◽  
Crystal Surfaces ◽  
Oxide Interfaces ◽  
Single Crystal Surfaces ◽  
Oxide Substrates

This article reviews aspects of the electronic, chemical, and structural properties of metal/oxide and oxide/oxide interfaces which are formed via ultrathin film growth on oxide single-crystal surfaces. The interactions at the interfaces are classified based on the nature of the reaction products, thermodynamic predictions of interfacial reactions, and wetting and adhesion. Then, properties of single-crystal oxide substrates and limitations and difficulties in studying these ceramic systems are discussed. The remainder of the article presents experimental observations for several systems involving both metal and oxide ultrathin film growth on stoichiometric NiO (100), TiO 2(110), and [Formula: see text] surfaces including a discussion of interdiffusion, chemical and electronic interactions, thermal stability, and interfacial impurity effects.

scholarly journals What Changes on the Inverse Catalyst? Insight From CO Oxidation on Au-Supported Ceria Nanoparticles Using Ab Initio Molecular Dynamics

2019 ◽  
Author(s):  
Yong Li ◽  
Shikun Li ◽  
Marcus Bäumer ◽  
Lyudmila V. Moskaleva
Keyword(s):  
Ab Initio ◽  
Co Oxidation ◽  
Au Nanoparticles ◽  
Ab Initio Molecular Dynamics ◽  
Simulation Studies ◽  
Oxidation Reactions ◽  
Oxide Interfaces ◽  
Improved Stability ◽  
Reducible Oxides ◽  
Inverse Catalyst

Oxidation reactions catalyzed by Au nanoparticles supported on reducible oxides have been widely studied both experimentally and theoretically, whereas <i>inverse catalysts</i>, in which oxide nanoparticles are supported on metal surfaces, received considerably less attention. In both systems catalytic activity at metal – oxide interfaces can arise not only from each material contributing its functionality, but also from their interactions creating properties beyond the sum of individual components. Inverse catalysts may retain the synergy between the metal and oxide functionalities, while offering further specific advantages, e.g. a possibility to have better control over interfacial sites or to yield improved stability, activity, and selectivity. Our work provides the mechanism of O atom/vacancy diffusion-assisted Mars-van-Krevelen CO oxidation on gold-supported ceria nanoparticle through state-of-the-art ab initio molecular dynamic simulation studies.

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