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- Title
High‐Areal Density Single‐Atoms/Metal Oxide Nanosheets: A Micro‐Gas Blasting Synthesis and Superior Catalytic Properties.
- Authors
Kuai, Long; Liu, Li; Tao, Qingmei; Yu, Nan; Kan, Erjie; Sun, Na; Liu, Shoujie; Geng, Baoyou
- Abstract
The two‐dimensional nanosheets are conducive to not only endow opened surfaces for loading active metal atoms but also boost the mass transfer for the heterogeneous reactions. The challenge is how to load and stabilize single‐atoms on nanosheets in high‐areal densities. This work reports an efficient micro‐gas blasting (MGB) strategy to access versatile noble metal single‐atoms/metal oxide nanosheets, including Ir1/CoOx, Pd1/CeO2, etc. Especially for Pt/CeO2 nanosheets (Pt1/CeO2−S), the Pt loading is increased to 15 at%. The Pt1/CeO2−S catalysts from MGB are revealed to possess superior reactivity and tolerance in the model reaction of water‐gas shift (WGS). The Pt1/CeO2−S catalyst exhibit 2–3 times reactivity that of their thicker counterpart, single‐atom Pt1/CeO2 microspheric catalyst. Moreover, the single‐atom sites in Pt1/CeO2−S (1–10 %) catalysts are stable in a harsh WGS reaction condition of 10 % CO. This work thus paves a way to access the practical single‐atom catalysts.
- Subjects
METALLIC oxides; NANOSTRUCTURED materials; WATER gas shift reactions; BLASTING; PRECIOUS metals; MASS transfer
- Publication
Angewandte Chemie, 2022, Vol 134, Issue 45, p1
- ISSN
0044-8249
- Publication type
Article
- DOI
10.1002/ange.202212338