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|Title:||Cobalt single atoms embedded in nitrogen-doped graphene for selective oxidation of benzyl alcohol by activated peroxymonosulfate|
|Citation:||Small, 2021; :e2004579-1-e2004579-8|
|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 OnlinePubl|
|Rights:||© 2021 Wiley‐VCH GmbH.|
|Appears in Collections:||Physics publications|
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