Single-Atom Electroplating on Two Dimensional Materials
| Autor: | Yawei Yue, Jinhang Chen, Peiyuan Zhuang, Yuanyue Liu, Zhengzong Sun, Ningning Xuan, Jianjian Shi, Jianfeng Shen, Kun Ba, Binghui Ge, Yangye Sun |
|---|---|
| Rok vydání: | 2018 |
| Předmět: |
Materials science
General Chemical Engineering Doping 02 engineering and technology General Chemistry engineering.material 010402 general chemistry 021001 nanoscience & nanotechnology Heterogeneous catalysis Electrochemistry 01 natural sciences 0104 chemical sciences Catalysis Chemical engineering Atom Materials Chemistry engineering Noble metal Density functional theory 0210 nano-technology Electroplating |
| Zdroj: | Chemistry of Materials. 31:429-435 |
| ISSN: | 1520-5002 0897-4756 |
| DOI: | 10.1021/acs.chemmater.8b03796 |
| Popis: | Catalyst doped with a single-atom noble metal displays distinctive catalytic behavior from the bulk counterparts, with tunable electronic structures and spatial versatilities, which excels in today’s heterogeneous catalysis. To deposit noble metals in a single atomic level requires a restricted chemical environment and precise thermodynamic control. Electroplating methods are commercially used to deposit uniform and conformal metal thin films on different hardware surfaces. Yet the atomic level electroplating has never been achieved. Herein we demonstrate a voltage gauged electrochemical deposition method to synthesize single-atom Pt, Au, and Pd on MoS2 and other two-dimensional (2D) materials. The surface atomic doping level for Pt, Au, and Pd can reach 1.1, 7.0, and 14%, respectively, and the doping sites are precisely positioned at Mo- and S-vacancies. The monodispersed noble atoms show enhanced hydrogen evolution activity and saturated CO tolerance, as explained by density functional theory calculatio... |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|