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  Atomically isolated Pd sites within Pd-S nanocrystals enable trifunctional catalysis for direct, electrocatalytic and photocatalytic syntheses of H2O2

Yang, T., Yang, C., Le, J., Yu, Z., Bu, L., Li, L., et al. (2021). Atomically isolated Pd sites within Pd-S nanocrystals enable trifunctional catalysis for direct, electrocatalytic and photocatalytic syntheses of H2O2. Nano Research, 1-7. doi:10.1007/s12274-021-3786-0.

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 Creators:
Yang, Tang1, Author
Yang, Chengyong1, Author
Le, Jiabo1, Author
Yu, Zhiyong1, Author
Bu, Lingzheng1, Author
Li, Leigang1, Author
Bai, Shuxing1, Author
Shao, Qi1, Author
Hu, Zhiwei2, Author           
Pao, Chih-Wen1, Author
Cheng, Jun1, Author
Feng, Yonggang1, Author
Huang, Xiaoqing1, Author
Affiliations:
1External Organizations, ou_persistent22              
2Zhiwei Hu, Physics of Correlated Matter, Max Planck Institute for Chemical Physics of Solids, Max Planck Society, ou_1863461              

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Free keywords: Catalysts; Hydrogen peroxide; Hydrogen production; Nanocrystals; Photocatalytic activity, Bond dissociation; Direct synthesis; Electrocatalytic; High productivity; High-efficiency; Photocatalytic synthesis; Production activity; Production of hydrogen, Palladium
 Abstract: Although high-efficiency production of hydrogen peroxide (H2O2) can be realized separately by means of direct, electrochemical, and photocatalytic synthesis, developing versatile catalysts is particularly challenging yet desirable. Herein, for the first time we reported that palladium-sulphur nanocrystals (Pd-S NCs) can be adopted as robust and universal catalysts, which can realize the efficient O2 conversion by three methods. As a result, Pd-S NCs exhibit an excellent selectivity (89.5) to H2O2 with high productivity (133.6 mol·kgcat−1h−1) in the direct synthesis, along with the significantly enhanced H2O2 production activity and stability via electrocatalytic and photocatalytic syntheses. It is demonstrated that the isolated Pd sites can enhance the adsorption of O2 and inhibit its O-O bond dissociation, improving H2O2 selectivity and reducing H2O2 degradation. Further study confirms that the difference in surface atom composition and arrangement is the key factor for different ORR mechanisms on Pd NCs and Pd-S NCs. [Figure not available: see fulltext.] © 2021, Tsinghua University Press and Springer-Verlag GmbH Germany, part of Springer Nature.

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Language(s): eng - English
 Dates: 2021-08-172021-08-17
 Publication Status: Issued
 Pages: -
 Publishing info: -
 Table of Contents: -
 Rev. Type: -
 Identifiers: DOI: 10.1007/s12274-021-3786-0
BibTex Citekey: Yang2021
 Degree: -

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Title: Nano Research
  Abbreviation : Nano Res.
Source Genre: Journal
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Publ. Info: Beijing, China : Tsinghua University Press
Pages: - Volume / Issue: - Sequence Number: - Start / End Page: 1 - 7 Identifier: ISSN: 1998-0124
CoNE: https://pure.mpg.de/cone/journals/resource/1998-0124