铂族金属单原子催化剂的制备、表征技术研究进展

Research Progress in Preparation and Characterization Techniques of Pt-group Metal Based Single-atom Catalysts

单原子催化不仅将多相催化领域研究从纳米尺度深入到了原子尺度,有助于从原子层次研究和认识非均相催化反应过程,也使得进一步提高活性铂族金属原子利用率、降低催化剂成本成为可能。基于国内外多年来在单原子催化领域取得的研究成果,介绍了铂族金属单原子催化剂的制备方法与表征技术,总结归纳了不同制备方法的参数控制关键、适用范围,以及不同表征数据分析、存在的问题与挑战。在不同表征技术融合创新的基础上,对于铂族金属单原子催化剂的可控制备技术尽早实现工业化应用提出了展望。

Single-atom catalysts (SACs) not only extend the research of heterogeneous catalysts from nanoscale to atomic scale, but also help us to study and understand the heterogeneous catalytic reactions from atomic level. In addition, SACs make it possible to further improve atom utilization rate of active Pt-group metals and effectively reduce the cost of catalysts. The preparation methods and characterization techniques for atomically dispersed Pt-group metal catalysts in recent years were reviewed. And the critical control parameters and the scope of applications of different preparation methods, as well as characterization techniques, and the existing problems and challenges were also summarized. Furthermore, based on the integrating innovation of different characterization techniques, putting forward prospective for controllable preparation of Pt-group metal based single-atom catalysts into industrial application was also discussed.