Formation of a 2D Meta-stable Oxide by Differential Oxidation of AgCu Alloys.

ABSTRACT: Metal alloy catalysts can develop complex surface structures when exposed to reactive atmospheres. The structures of the resulting surfaces have intricate relationships with a myriad of factors, such as the affinity of the individual alloying elements to the components of the gas atmosphere and the bond strengths of the multitude of low-energy surface compounds that can be formed. Identifying the atomic structure of such surfaces is a prerequisite for establishing structure-property relationships, as well as for modeling such catalysts in ab initio calculations. Here, we show that an alloy, consisting of an oxophilic metal (Cu) diluted into a noble metal (Ag), forms a meta-stable two-dimensional oxide monolayer, when the alloy is subjected to oxidative reaction conditions. The presence of

SUBMITTER: Schweinar K 

PROVIDER: S-EPMC7304822 | biostudies-literature | 2020 May

REPOSITORIES: biostudies-literature