Issue 4, 2022

Boosting electrochemical nitrite–ammonia conversion properties by a Cu foam@Cu2O catalyst

Abstract

Electrocatalytic reduction of nitrite (NO2) to ammonia (NH3) can simultaneously achieve wastewater treatment and ammonia production, but it needs efficient catalysts. Herein, Cu2O particles self-supported on Cu foam with enriched oxygen vacancies are developed to enable selective NO2 reduction to NH3, exhibiting a maximum NH3 yield rate of 7510.73 μg h−1 cm−2 and high faradaic efficiency of 94.21% at 0.6 V in 0.1 M PBS containing 0.1 M NaNO2. Density functional theory calculations reveal the vital role of oxygen vacancies during the nitrite reduction process, as well as the reaction mechanisms and the potential limiting step involved. This work provides a new avenue to the rational design of Cu-based catalysts for NH3 electrosynthesis.

Graphical abstract: Boosting electrochemical nitrite–ammonia conversion properties by a Cu foam@Cu2O catalyst

Supplementary files

Article information

Article type
Communication
Submitted
04 nov 2021
Accepted
06 des 2021
First published
07 des 2021

Chem. Commun., 2022,58, 517-520

Boosting electrochemical nitrite–ammonia conversion properties by a Cu foam@Cu2O catalyst

Q. Chen, X. An, Q. Liu, X. Wu, L. Xie, J. Zhang, W. Yao, M. S. Hamdy, Q. Kong and X. Sun, Chem. Commun., 2022, 58, 517 DOI: 10.1039/D1CC06215H

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