Boosting the catalysis of gold by O₂ activation at Au-SiO₂ interface.

ABSTRACT: Supported gold (Au) nanocatalysts have attracted extensive interests in the past decades because of their unique catalytic properties for a number of key chemical reactions, especially in (selective) oxidations. The activation of O₂ on Au nanocatalysts is crucial and remains a challenge because only small Au nanoparticles (NPs) can effectively activate O₂. This severely limits their practical application because Au NPs inevitably sinter into larger ones during reaction due to their low Taman temperature. Here we construct a Au-SiO₂ interface by depositing thin SiO₂ layer onto Au/TiO₂ and calcination at high temperatures and demonstrate that the interface can be not only highly sintering resistant but also extremely active for O_2</

SUBMITTER: Zhang Y 

PROVIDER: S-EPMC6987105 | biostudies-literature | 2020 Jan

REPOSITORIES: biostudies-literature