Remarkable active-site dependent H2O promoting effect in CO oxidation

Zhao, Shu1,2,3; Chen, Fang4; Duan, Sibin5; Shao, Bin6; Li, Tianbo4; Tang, Hailian4; Lin, Qingquan7; Zhang, Junying6; Li, Lin4; Huang, Jiahui6; Bion, Nicolas8; Liu, Wei9; Sun, Hui4; Wang, Ai-Qin4; Haruta, Masatake6,10,11; Qiao, Botao5,9; Li, Jun1,2,12; Liu, Jingyue5; Zhang, Tao4

2019-08-23

10.1038/s41467-019-11871-w

Nature Communications   影响因子和分区

2041-1723

The interfacial sites of supported metal catalysts are often critical in determining their performance. Single-atom catalysts (SACs), with every atom contacted to the support, can maximize the number of interfacial sites. However, it is still an open question whether the single-atom sites possess similar catalytic properties to those of the interfacial sites of nanocatalysts. Herein, we report an active-site dependent catalytic performance on supported gold single atoms and nanoparticles (NPs), where CO oxidation on the single-atom sites is dramatically promoted by the presence of H2O whereas on NPs' interfacial sites the promoting effect is much weaker. The remarkable H2O promoting effect makes the Au SAC two orders of magnitude more active than the commercial three-way catalyst. Theoretical studies reveal that the dramatic promoting effect of water on SACs originates from their unique local atomic structure and electronic properties that facilitate an efficient reaction channel of CO + OH.

SCI

英语

NI期刊

通讯

National Science Foundation[CHE1465057]

Science & Technology - Other Topics

Multidisciplinary Sciences

WOS:000482398900026

NATURE PUBLISHING GROUP

Web of Science

1.Tsinghua Univ, Dept Chem, Minist Educ, Beijing 100084, Peoples R China
2.Tsinghua Univ, Key Lab Organ Optoelect & Mol Engn, Minist Educ, Beijing 100084, Peoples R China
3.Beijing Univ Technol, Beijing Guyue New Mat Res Inst, Beijing 100124, Peoples R China
4.Chinese Acad Sci, Dalian Inst Chem Phys, CAS Key Lab Sci & Technol Appl Catalysis, Dalian 116023, Peoples R China
5.Arizona State Univ, Dept Phys, Tempe, AZ 85287 USA
6.Chinese Acad Sci, Gold Catalysis Res Ctr, Dalian Inst Chem Phys, Dalian 116023, Peoples R China
7.Yantai Univ, Sch Chem & Chem Engn, Inst Appl Catalysis, Yantai 264005, Shandong, Peoples R China
8.Univ Poitiers, IC2MP, CNRS, 4 Rue Michel Brunet,TSA51106, F-86073 Poitiers 9, France
9.Chinese Acad Sci, Dalian Inst Chem Phys, Dalian Natl Lab Clean Energy, 457 Zhongshan Rd, Dalian 116023, Peoples R China
10.Tokyo Metropolitan Univ, Res Ctr Gold Chem, Grad Sch Urban Environm Sci, Tokyo 1920397, Japan
11.Tokyo Metropolitan Univ, Dept Appl Chem, Grad Sch Urban Environm Sci, Tokyo 1920397, Japan
12.Southern Univ Sci & Technol, Dept Chem, Shenzhen 518055, Peoples R China

Zhao, Shu,Chen, Fang,Duan, Sibin,et al. Remarkable active-site dependent H2O promoting effect in CO oxidation[J]. Nature Communications,2019,10.

Zhao, Shu.,Chen, Fang.,Duan, Sibin.,Shao, Bin.,Li, Tianbo.,...&Zhang, Tao.(2019).Remarkable active-site dependent H2O promoting effect in CO oxidation.Nature Communications,10.

Zhao, Shu,et al."Remarkable active-site dependent H2O promoting effect in CO oxidation".Nature Communications 10(2019).