A Single‐Atom Manipulation Approach for Synthesis of Atomically Mixed Nanoalloys as Efficient Catalysts. (4th June 2020)

• Record Type: Journal Article
• Authors: Zhou, Xuan; Li, Kai; Lin, Yunxiang; Song, Li; Liu, Jincheng; Liu, Yu; Zhang, Lingling; Wu, Zhijian; Song, Shuyan; Li, Jun; Zhang, Hongjie
• Is Part Of: Angewandte Chemie. Volume 132:Number 32(2020)
• Page Start: 13670
• Page End: 13676
• Publication Date: 2020-06-04
• Subjects: atomic mixing -- CeO2 -- CO oxidation -- nanoalloy -- single-atom catalyst; Chemistry -- Periodicals; 540
• DOI: 10.1002/ange.202004945
• Languages: English
• ISSNs: 0044-8249

Abstract

Abstract: Synthesis of well‐defined atomically mixed alloy nanoparticles on desired substrates is an ultimate goal for their practical application. Herein we report a general approach for preparing atomically mixed AuPt, AuPd, PtPd, AuPtPd NAs(nanoalloys) through single‐atom level manipulation. By utilizing the ubiquitous tendency of aggregation of single atoms into nanoparticles at elevated temperatures, we have synthesized nanoalloys on a solid solvent with CeO2 as a carrier and transition‐metal single atoms as an intermediate state. The supported nanoalloys/CeO2 with ultra‐low noble metal content (containing 0.2 wt % Au and 0.2 wt % Pt) exhibit enhanced catalytic performance towards complete CO oxidation at room temperature and remarkable thermostability. This work provides a general strategy for facile and rapid synthesis of well‐defined atomically mixed nanoalloys that can be applied for a range of emerging techniques. Abstract : The atoms went in one by one : Atomically mixed AuPt, AuPd, PtPd, AuPdPt nanoalloys are prepared by the solid solvent method via single‐atom level manipulation. The supported nanoalloys/CeO2 with ultra‐low noble metal content exhibit remarkable catalytic performance towards CO oxidation at room temperature and robust thermostability.