Reduction-Controlled Atomic Migration for Single Atom Alloy Library

被引：34

作者：

Wang, Yan-Ru ^{[1
]}

Zhuang, Qingfeng ^{[2
]}

Cao, Rui ^{[3
]}

Li, Yi ^{[1
]}

Gao, Fei-Yue ^{[1
]}

Li, Zhao-Rui ^{[1
]}

He, Zhen ^{[1
]}

Shi, Lei ^{[1
]}

Meng, Yu-Feng ^{[1
]}

Li, Xu ^{[1
]}

Wang, Jin-Long ^{[1
]}

Duan, Yu ^{[1
]}

Gao, Min-Rui ^{[1
]}

Zheng, Xiao ^{[2
]}

Yu, Shu-Hong ^{[1
]}

机构：

[1] Univ Sci & Technol China, Hefei Natl Res Ctr Phys Sci Microscale,Div Nanoma, Hefei Comprehens Natl Sci Ctr,Anhui Engn Lab Biom, Inst Energy,Dept Chem,Inst Biomimet Mat & Chem, Hefei 230026, Anhui, Peoples R China

[2] Univ Sci & Technol China, Dept Chem Phys, Div Theoret & Computat Sci, Hefei Natl Lab Phys Sci Microscale, Hefei 230026, Anhui, Peoples R China

[3] SLAC Natl Accelerator Lab, Stanford Synchrotron Radiat Lightsource, Menlo Pk, CA 94025 USA

来源：

NANO LETTERS | 2022年 / 22卷 / 10期

基金：

中国国家自然科学基金;

关键词：

reduction-controlled; single atom alloys; atom migration; cupper; noble metal; HETEROGENEOUS CATALYSIS; CARBON-DIOXIDE; CO OXIDATION; ELECTROREDUCTION; GOLD; PD; TRANSFORMATION; NANOPARTICLES; NANOCRYSTALS; STABILITY;

D O I：

10.1021/acs.nanolett.2c01314

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Picturing the atomic migration pathways of catalystsin a reactive atmosphere is of central significance for uncoveringthe underlying catalytic mechanisms and directing the design ofhigh-performance catalysts.Here,wedescribeareduction-controlled atomic migration pathway that converts nanoparticlesto single atom alloys (SAAs), which has remained syntheticallychallenging in prior attempts due to the elusive mechanism. Weachieved this by thermally treating the noble-metal nanoparticles M (M = Ru, Rh, Pd, Ag, Ir, Pt, and Au) on metal oxide (CuO)supports with H2/Ar. Atomic-level characterization revealed such conversion as the synergistic consequence of noble metal-promoted H2dissociation and concomitant CuO reduction. The observed atomic migration pathway offers an understanding of thedynamic mechanisms study of nanomaterials formation and catalyst design

引用

页码：4232 / 4239

页数：8

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