Please use this identifier to cite or link to this item:
https://hdl.handle.net/2440/134482
Citations | ||
Scopus | Web of Science® | Altmetric |
---|---|---|
?
|
?
|
Type: | Journal article |
Title: | Mesoporous Co-O-C nanosheets for electrochemical production of hydrogen peroxide in acidic medium |
Author: | Jing, L. Tian, Q. Su, P. Li, H. Zheng, Y. Tang, C. Liu, J. |
Citation: | Journal of Materials Chemistry A, 2022; 10(8):4068-4075 |
Publisher: | Royal Society of Chemistry |
Issue Date: | 2022 |
ISSN: | 2050-7488 2050-7496 |
Statement of Responsibility: | Lingyan Jing, Qiang Tian, Panpan Su, Haitao Li, Yao Zheng, Cheng Tang Jian Liu |
Abstract: | The electrochemical two-electron oxygen reduction reaction (2e− ORR) for the production of hydrogen peroxide (H2O2) enables a promising electro-Fenton process for on-site and on-demand environmental remediation. However, there is still a lack of low-cost electrocatalysts for efficient H2O2 electrosynthesis, particularly in acidic media. Herein, we designed and synthesized cobalt species incorporated in oxygen-rich mesoporous carbon nanosheets (MesoC-Co), resulting in electrochemical H2O2 production with a selectivity above 80% over a wide potential range in 0.10 M HClO4. In our reported electrocatalysts, atomic Co sites contribute to the high ORR activity of carbon-based materials in an acidic medium, and the oxygen-containing functional groups and mesoporous structure endow the catalysts with high H2O2 selectivity. The ORR current density over MesoC-Co with uniform mesopores and well-defined Co species reaches −1 mA cm−2 at 0.4 V versus reversible hydrogen electrode with very good durability. In addition, the cumulative concentration of H2O2 is 7.2 mmol L−1 within 24 h, allowing for the effective electro-Fenton degradation of organic pollutants. Our results might shed light on the design of catalytic systems for sustainable electro-Fenton processes. |
Rights: | This journal is © The Royal Society of Chemistry 2022 |
DOI: | 10.1039/d1ta10416k |
Grant ID: | http://purl.org/au-research/grants/arc/DE220101365 |
Published version: | http://dx.doi.org/10.1039/d1ta10416k |
Appears in Collections: | Physics publications |
Files in This Item:
There are no files associated with this item.
Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.