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Electrostatic Stabilization of Single-Atom Catalysts by Ionic Liquids
| Title: | Electrostatic Stabilization of Single-Atom Catalysts by Ionic Liquids |
| Authors: | Ding, Shipeng Browse this author | | Guo, Yalin Browse this author | | Hulsey, Max J. Browse this author | | Zhang, Bin Browse this author | | Asakura, Hiroyuki Browse this author | | Liu, Lingmei Browse this author | | Han, Yu Browse this author | | Gao, Min Browse this author | | Hasegawa, Jun-ya Browse this author →KAKEN DB | | Qiao, Botao Browse this author | | Zhang, Tao Browse this author | | Yan, Ning Browse this author |
| Issue Date: | 12-Dec-2019 |
| Publisher: | Cell Press |
| Journal Title: | Chem |
| Volume: | 5 |
| Issue: | 12 |
| Start Page: | 3207 |
| End Page: | 3219 |
| Publisher DOI: | 10.1016/j.chempr.2019.10.007 |
| Abstract: | In single-atom catalysts (SACs), the isolated metal atoms on solid support are often charged. Taking advantage of this common feature, we establish ionic liquid-stabilized single-atom catalysts (ILSSACs) employing electrostatic interaction as a general stabilization strategy. While Pt nanoparticles were formed on hydroxyapatite after reaction when unprotected, Pt remained atomically dispersed on ionic liquid-stabilized samples. Density functional theory calculations reveal that the activation energy for the transformation of two isolated Pt atoms to a Pt dimer increases remarkably from 0.11 to 0.72 eV with the protection of [Bmim][BF4]. The presence of ILs also tunes the electronic state of Pt-1, inducing an order-of-magnitude hydrogenation activity increase. The simple stabilization strategy is easily extended to SACs comprising various metal atom-support combinations. For instance, ILs significantly improved the stability and selectivity of a Pd-1 catalyst for the hydrogenation of acetylene, thus outperforming unprotected SACs. |
| Type: | article |
| URI: | http://hdl.handle.net/2115/79928 |
| Appears in Collections: | 触媒科学研究所 (Institute for Catalysis) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)
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