Reduction-Controlled Atomic Migration for Single Atom Alloy Library

• DOI: 10.1021/acs.nanolett.2c01314
• Publication Date: 2022-05-09T17:55:34Z
• Authors: Yan-Ru Wang; Qingfeng Zhuang; Rui Cao; Yi Li; Fei-Yue Gao; Zhao-Rui Li; Zhen He; Lei Shi; Yu-Feng Meng; Xu Li; Jin-Long Wang; Yu Duan; Min-Rui Gao; Xiao Zheng; Shu-Hong Yu
• Keywords: Nanomaterials; Noble metal

Picturing the atomic migration pathways of catalysts in a reactive atmosphere is central significance for uncovering underlying catalytic mechanisms and directing design high-performance catalysts. Here, we describe reduction-controlled pathway that converts nanoparticles to single atom alloys (SAAs), which has remained synthetically challenging prior attempts due elusive mechanism. We achieved this by thermally treating noble-metal M (M = Ru, Rh, Pd, Ag, Ir, Pt, Au) on metal oxide (CuO) supports with H2/Ar. Atomic-level characterization revealed such conversion as synergistic consequence noble metal-promoted H2 dissociation concomitant CuO reduction. The observed offers an understanding dynamic study nanomaterials formation catalyst design.