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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
Statement of
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
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Physics publications

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