期刊
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
卷 61, 期 43, 页码 -出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/anie.202211307
关键词
Mesoporous Materials; Metal Clusters; Selective Hydrogenation; Single-Atom-Layer; Two-Dimensional
资金
- National Key R&D Program of China [2018YFA0209401, 2018YFE0201701]
- National Nature Science Foundation of China [22088101, 21733003, U21A20329, 21975050]
- Program of Shanghai Academic Research Leader [21XD1420800]
- Shanghai Pilot Program for Basic Research-FuDan University [21TQ1400100, 21TQ008]
A sulfhydryl monomicelles interfacial assembly strategy is presented for the synthesis of fully exposed single-atom-layer Pt clusters on 2D mesoporous TiO2 nanosheets. This strategy is universal and shows high catalytic activity and stability.
A sulfhydryl monomicelles interfacial assembly strategy is presented for the synthesis of fully exposed single-atom-layer Pt clusters on 2D mesoporous TiO2 (SAL-Pt@mTiO(2)) nanosheets. This synthesis features the introduction of the sulfhydryl group in monomicelles to finely realize the controllable co-assembly process of Pt precursors within ordered mesostructures. The resultant SAL-Pt@mTiO(2) shows uniform SAL Pt clusters (approximate to 1.2 nm) anchored in ultrathin 2D nanosheets (approximate to 7 nm) with a high surface area (139 m(2) g(-1)), a large pore size (approximate to 25 nm) and a high dispersion (approximate to 99 %). Moreover, this strategy is universal for the synthesis of other SAL metal clusters (Pd and Au) on 2D mTiO(2) with high exposure and accessibility. When used as a catalyst for hydrogenation of 4-nitrostyrene, the SAL-Pt@mTiO(2) shows a high catalytic activity (TOF up to 2424 h(-1)), 100 % selectivity for 4-aminostyrene, good stability, and anti-resistance to thiourea poisoning under relatively mild conditions (25 degrees C, 10 bar).
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