Cobalt single atoms embedded in nitrogen‐doped graphene for selective oxidation of benzyl alcohol by activated peroxymonosulfate

Document Type

Journal Article

Publication Title

Small

Publisher

Wiley

School

School of Engineering

RAS ID

32807

Funders

Australian Research Council

Grant Number

ARC Number : DP180103861

Grant Link

http://purl.org/au-research/grants/arc/DP180103861

Comments

Li, J., Zhao, S., Zhang, L., Jiang, S. P., Yang, S. Z., Wang, S., ... Liu, S. (2021). Cobalt single atoms embedded in nitrogen‐doped graphene for selective oxidation of benzyl alcohol by activated peroxymonosulfate. Small, 17(16), article 2004579. https://doi.org/10.1002/smll.202004579

Abstract

© 2021 Wiley-VCH GmbH 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.

DOI

10.1002/smll.202004579

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