Surface‐Confined Synthesis of Ultrafine Pt‐Rare Earth Nanoalloys on N‐Functionalized Supports. (10th July 2022)

• Record Type: Journal Article
• Authors: Hu, Mingzhen; Cai, Zengjian; Liang, Xinhu; Li, Ganggang; Tan, Haiyan; Yang, Shitu; Ren, Hao; Wang, Zhe; Sun, Guodong; Liu, Shoujie; Hao, Zhengping; Zhou, Kebin
• Is Part Of: Advanced functional materials. Volume 32:Number 38(2022)
• Page Start: n/a
• Page End: n/a
• Publication Date: 2022-07-10
• Subjects: Pt‐rare earth nanoalloys -- surface‐confined preparations -- ultrafine particles; Materials -- Periodicals; Chemical vapor deposition -- Periodicals; 620.11
• DOI: 10.1002/adfm.202202675
• Languages: English
• ISSNs: 1616-301X

Abstract

Abstract: It is extremely challenging to controllably synthesize rare earth‐containing nanoalloys due to the ultralow standard reduction potential of rare earth metals. Here, a surface‐confined strategy to prepare ultrafine Pt‐rare earth nanoalloys on a series of N‐functionalized supports is reported. It proves that by surface N‐metal coordination, the metal cations of precursors are atomically dispersed on support, which greatly favors uniform nucleation and growth of particles upon reduction. Moreover, the moderate metal transfer barrier from N ensures particle growth in a confined region to form ultrafine nanoalloys. Using this method, ultrafine PtLa, PtY, and PtDy nanoalloys are prepared on N‐functionalized supports such as carbon, zeolite, and Al2 O3 . Notably, the PtLa nanoalloys on N‐functionalized zeolite show superior activity and durability for propane oxidation. The strategy is expected to provide guidelines for preparing highly efficient rare earth‐containing nanoalloys for catalysis applications. Abstract : A surface‐confined method is developed in this work to prepare ultrafine Pt‐rare earth nanoalloys on a variety of N‐functionalized supports. The formation of ultrafine Pt‐rare earth nanoalloys are acquired by confining metal transfer and particle growth to a narrow region of N‐functionalized supports as revealed by both experiment and density functional theory calculations.