CoO nanoparticle decorated N-doped carbon nanotubes: a high-efficiency catalyst for nitrate reduction to ammonia. Issue 39 (27th April 2022)

• Record Type: Journal Article
• Authors: Chen, Qiru; Liang, Jie; Yue, Luchao; Luo, Yongsong; Liu, Qian; Li, Na; Alshehri, Abdulmohsen Ali; Li, Tingshuai; Guo, Haoran; Sun, Xuping
• Is Part Of: Chemical communications. Volume 58:Issue 39(2022)
• Page Start: 5901
• Page End: 5904
• Publication Date: 2022-04-27
• Subjects: Chemistry -- Periodicals; 540
• DOI: 10.1039/d2cc00997h
• Languages: English
• ISSNs: 1359-7345

Abstract

Abstract : As an electrocatalyst for nitrate reduction, CoO nanoparticle decorated N-doped carbon nanotubes show a large NH3 yield up to 9166.37 μg h −1 cm −2 and a high faradaic efficiency of 93.63% in 0.1 M NaOH with 0.1 M NO3 − . 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.