Abstract
Atomically monodisperse Au 25(SR) 18 (where R CH 2CH 2Ph) nanoparticles are explored as a stereoselective catalyst for hydrogenation of cyclic ketone to one specific isomer of cyclic alcohol product. A complete (∼100%) stereoselectivity is obtained. The catalytic performance is correlated with the crystal structure and core-shell electronic nature of Au 25(SR) 18 superatoms, in which the electron-rich Au 13 core activates the C O bond, whereas the electron-deficient Au 12 shell provides active sites for H 2 adsorption and dissociation. This work demonstrates promising catalytic performance of ultrasmall gold nanoparticles. The atomically precise Au 25(SR) 18 superatom catalyst may be explored as hydrogenation catalysts for some important chemical processes.
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