Issue 1, 2023

Discriminating active sites for the electrochemical synthesis of H2O2 by molecular functionalisation of carbon nanotubes

Abstract

The electrochemical production of H2O2via the two-electron oxygen reduction reaction (2e ORR) has recently attracted attention as a promising alternative to the current anthraquinone process. Identification of active sites in O-doped carbon materials, which exhibit high activities and selectivities for the 2e ORR, is important for understanding the selective electrocatalytic process and achieving the rational design of active electrocatalysts. However, this is impeded by the heterogeneous distribution of various active sites on these catalysts. In this study, we exploited the molecular functionalisation approach to implant anthraquinone, benzoic acid, and phenol groups on carbon nanotubes and systematically compared the electrocatalytic activities and selectivities of these functional groups. Among these oxygen functional groups, the anthraquinone group showed the highest surface-area-normalised and active-site-normalised activities.

Graphical abstract: Discriminating active sites for the electrochemical synthesis of H2O2 by molecular functionalisation of carbon nanotubes

Supplementary files

Article information

Article type
Paper
Submitted
25 Aug 2022
Accepted
10 Nov 2022
First published
17 Nov 2022

Nanoscale, 2023,15, 195-203

Discriminating active sites for the electrochemical synthesis of H2O2 by molecular functionalisation of carbon nanotubes

J. Lee, Y. Lee, J. S. Lim, S. W. Kim, H. Jang, B. Seo, S. H. Joo and Y. J. Sa, Nanoscale, 2023, 15, 195 DOI: 10.1039/D2NR04652K

To request permission to reproduce material from this article, please go to the Copyright Clearance Center request page.

If you are an author contributing to an RSC publication, you do not need to request permission provided correct acknowledgement is given.

If you are the author of this article, you do not need to request permission to reproduce figures and diagrams provided correct acknowledgement is given. If you want to reproduce the whole article in a third-party publication (excluding your thesis/dissertation for which permission is not required) please go to the Copyright Clearance Center request page.

Read more about how to correctly acknowledge RSC content.

Social activity

Spotlight

Advertisements