Remarkable active-site dependent H2O promoting effect in CO oxidation

Shu Zhao, Fang Chen, Sibin Duan, Bin Shao, Tianbo Li, Hailian Tang, Qingquan Lin, Junying Zhang, Lin Li, Jiahui Huang, Nicolas Bion, Wei Liu, Hui Sun, Ai-Qin Wang, Masatake Haruta, Botao Qiao (), Jun Li (), Jingyue Liu () and Tao Zhang
Additional contact information
Shu Zhao: Tsinghua University
Fang Chen: Chinese Academy of Sciences
Sibin Duan: Arizona State University
Bin Shao: Chinese Academy of Sciences
Tianbo Li: Chinese Academy of Sciences
Hailian Tang: Chinese Academy of Sciences
Qingquan Lin: Yantai University
Junying Zhang: Chinese Academy of Sciences
Lin Li: Chinese Academy of Sciences
Jiahui Huang: Chinese Academy of Sciences
Nicolas Bion: University of Poitiers, CNRS
Wei Liu: Chinese Academy of Sciences
Hui Sun: Chinese Academy of Sciences
Ai-Qin Wang: Chinese Academy of Sciences
Masatake Haruta: Chinese Academy of Sciences
Botao Qiao: Arizona State University
Jun Li: Tsinghua University
Jingyue Liu: Arizona State University
Tao Zhang: Chinese Academy of Sciences

Nature Communications, 2019, vol. 10, issue 1, 1-9

Abstract: Abstract 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.

Date: 2019
References: Add references at CitEc
Citations:

Downloads: (external link)
https://www.nature.com/articles/s41467-019-11871-w Abstract (text/html)

Related works:
This item may be available elsewhere in EconPapers: Search for items with the same title.

Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text

Persistent link: https://EconPapers.repec.org/RePEc:nat:natcom:v:10:y:2019:i:1:d:10.1038_s41467-019-11871-w

Ordering information: This journal article can be ordered from
https://www.nature.com/ncomms/

DOI: 10.1038/s41467-019-11871-w

Access Statistics for this article

Nature Communications is currently edited by Nathalie Le Bot, Enda Bergin and Fiona Gillespie

More articles in Nature Communications from Nature
Bibliographic data for series maintained by Sonal Shukla () and Springer Nature Abstracting and Indexing ().