Abstract
Many active gold catalysts are prepared onreducible oxides, and strong interactions between the supportand the gold particle may create active sites at the peripheryclose to the particle–support interface. These interactionsmay also include charge transfer to or from the particle. Forpurely geometric reasons, small particles have a high propor-tion of low-coordinated edge and corner atoms that might actas reaction centers. Also, thermal effects from localized softphonon modes at particle edges may contribute to thelowering of critical reaction barriers.Lately, a large amount of work has been conducted toelucidate the properties of gold clusters on ultrathin (a fewmonolayers (ML) thick) MgO films supported by metal,typically silver.
Published Version
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