Journal
ACS MATERIALS LETTERS
Volume 4, Issue 7, Pages 1350-1357Publisher
AMER CHEMICAL SOC
DOI: 10.1021/acsmaterialslett.2c00390
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Funding
- National Key Research and Development Program of China [2018YFA0702001]
- National Natural Science Foundation of China [22071225]
- Fundamental Research Funds for the Central Universities [WK2060190103]
- Joint Funds from Hefei National Synchrotron Radiation Laboratory [KY2060000175]
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Atomically ordered intermetallic compounds (IMCs) have been synthesized with average particle sizes of < 4 nm by a general synthesis strategy based on the strong chemical interaction between metal and sulfur. These Rh-based IMC catalysts showed enhanced catalytic performance for nitroarene hydrogenation, highlighting the advantages of atomically order structure of IMCs for the chemoselective molecular recognition of nitro groups through geometric and electronic effects.
Atomically ordered intermetallic compounds (IMCs) have sparked continuous research interest in the catalysis owing to their unprecedented electronic and geometric features. Unfortunately, controlling the IMCs particle size into the range required for industrial catalysts remains a synthetic bottleneck, as the high-temperature annealing steps that are often necessary for the formation of intermetallic phase inevitably lead to severe metal sintering. Here, we report a general synthesis strategy for preparing a family of 10 different Rh-based IMCs with average particle sizes of < 4 nm, including Rh3Ti, Rh3V, RhFe, RhGa, RhGe, Rh2Ge, RhIn, Rh3Sn2, RhSb, and Rh2Sb, based on the strong chemical interaction between metal and sulfur, which significantly suppresses the metal sintering up to 900 degrees C. The prepared Rh-based IMC catalysts exhibited enhanced catalytic performance for the nitroarene hydrogenation, clearly demonstrating the advantages of atomically order structure of IMCs for the chemoselective molecular recognition of nitro groups through geometric and electronic effects.
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