Tuning the Accessibility and Activity of Au25(SR)18 Nanocluster Catalysts through Ligand Engineering |
| |
| Authors: | Jingguo Li Dr Ricca Rahman Nasaruddin Dr Yan Feng Prof Dr Jun Yang Prof Dr Ning Yan Prof Dr Jianping Xie |
| |
| Institution: | 1. Department of Chemical and Biomolecular Engineering, National University of Singapore, Singapore;2. State Key Laboratory of Multiphase Complex Systems, Institute of Process Engineering, Chinese Academy of Sciences, Beijing, P. R. China |
| |
| Abstract: | In this work, the effects of thiolate ligands (‐SR, e.g., chain length and functional moiety) on the accessibility and catalytic activity of thiolate‐protected gold nanoclusters (e.g., Au25(SR)18) for 4‐nitrophenol hydrogenation is reported. The data suggest that Au25(SR)18 bearing a shorter alkyl chain shows a better accessibility to the substrates (shown by shorter induction time, t0) and a higher catalytic activity (shown by higher apparent reaction rate constant, kapp). The functional moiety of the ligands is another determinant factor, which clearly suggests that ligand engineering of Au25(SR)18 would be an efficient platform for fine‐tuning its catalytic properties. |
| |
| Keywords: | cluster catalyst gold nanoclusters ligand engineering nanocatalysis noble metal nanoclusters |
|
|
