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 O2 activation. This work provides insights into the catalysis of Au nanocatalysts and paves a way for the design and development of highly active supported Au catalysts with excellent thermal stability.
journal_name
Nat Communjournal_title
Nature communicationsauthors
Zhang Y,Zhang J,Zhang B,Si R,Han B,Hong F,Niu Y,Sun L,Li L,Qiao B,Sun K,Huang J,Haruta Mdoi
10.1038/s41467-019-14241-8subject
Has Abstractpub_date
2020-01-28 00:00:00pages
558issue
1issn
2041-1723pii
10.1038/s41467-019-14241-8journal_volume
11pub_type
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