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https://hdl.handle.net/2440/130034
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Type: | Journal article |
Title: | Cobalt single atoms embedded in nitrogen-doped graphene for selective oxidation of benzyl alcohol by activated peroxymonosulfate |
Author: | Li, J. Zhao, S. Zhang, L. Jiang, S.P. Yang, S.-Z. Wang, S. Sun, H. Johannessen, B. Liu, S. |
Citation: | Small, 2021; 17(16):2004579-1-2004579-8 |
Publisher: | Wiley |
Issue Date: | 2021 |
ISSN: | 1613-6810 1613-6829 |
Statement of Responsibility: | Jiaquan Li, Shiyong Zhao, Lianji Zhang, San Ping Jiang, Shi‐Ze Yang, Shaobin Wang ... et al. |
Abstract: | The development of novel single atom catalyst (SAC) is highly desirable in organic synthesis to achieve the maximized atomic efficiency. Here, a Co-based SAC on nitrogen-doped graphene (SACo@NG) with high Co content of 4.1 wt% is reported. Various characterization results suggest that the monodispersed Co atoms are coordinated with N atoms to form robust and highly effective catalytic centers to activate peroxymonosulfate (PMS) for organic selective oxidation. The catalytic performance of the SACo@NG/PMS system is conducted on the selective oxidation of benzyl alcohol (BzOH) showing high efficiency with over 90% conversion and benzaldehyde selectivity within 180 min under mild conditions. Both radical and non-radical processes occurred in the selective oxidation of BzOH, but the non-radical oxidation plays the dominant role which is accomplished by the adsorption of BzOH/PMS on the surface of SACo@NG and the subsequent electron transfer through the carbon matrix. This work provides new insights to the preparation of efficient transition metal-based single atom catalysts and their potential applications in PMS mediated selective oxidation of alcohols. |
Keywords: | nitrogen-doped graphene peroxymonosulfate activation selective oxidation single-atom catalysts transition metals |
Description: | First published: 19 January 2021 |
Rights: | © 2021 Wiley‐VCH GmbH. |
DOI: | 10.1002/smll.202004579 |
Grant ID: | http://purl.org/au-research/grants/arc/DP180103861 |
Published version: | http://dx.doi.org/10.1002/smll.202004579 |
Appears in Collections: | Aurora harvest 8 Physics publications |
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