Issue 39, 2022

CoO nanoparticle decorated N-doped carbon nanotubes: a high-efficiency catalyst for nitrate reduction to ammonia

Abstract

Ambient electrochemical NO3 reduction is emerging as an appealing approach toward eliminating NO3 contaminants and generating NH3 simultaneously, but its efficiency is challenged by a lack of active and selective electrocatalysts. In this work, we report CoO nanoparticle decorated N-doped carbon nanotubes as an efficient catalyst for highly selective hydrogenation of NO3 to NH3. In 0.1 M NaOH electrolyte with 0.1 M NO3, this catalyst is capable of achieving a large NH3 yield of up to 9041.6 ± 370.7 μg h−1 cm−2 and a high faradaic efficiency of 93.8 ± 1.5%, with excellent durability. Theoretical calculations reveal the catalytic mechanisms.

Graphical abstract: CoO nanoparticle decorated N-doped carbon nanotubes: a high-efficiency catalyst for nitrate reduction to ammonia

Supplementary files

Article information

Article type
Communication
Submitted
17 Febr. 2022
Accepted
19 Apr. 2022
First published
19 Apr. 2022

Chem. Commun., 2022,58, 5901-5904

CoO nanoparticle decorated N-doped carbon nanotubes: a high-efficiency catalyst for nitrate reduction to ammonia

Q. Chen, J. Liang, L. Yue, Y. Luo, Q. Liu, N. Li, A. A. Alshehri, T. Li, H. Guo and X. Sun, Chem. Commun., 2022, 58, 5901 DOI: 10.1039/D2CC00997H

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