Conjugated Cobalt Porphyrin Polymer for Highly Active and Selective Electrocatalytic Nitrite Reduction to Ammonia DOI
Lisi Xie,

Benxing Mei,

Yabo Wang

et al.

Advanced Functional Materials, Journal Year: 2025, Volume and Issue: unknown

Published: April 15, 2025

Abstract Electrocatalytic nitrite (NO 2 − ) reduction RR) to ammonia (NH 3 is a promising green technology for producing NH with high efficiency. Cobalt macrocyclic complexes have attracted great interest because of their ability selectively convert NO , but suffer from low yields. Herein, cobalt porphyrin conjugated polymer on carbon nanotubes (CoPCOP@CNT) reported display exceptional RR performance large yield 133.39 mg h −1 CoP at −1.0 V and Faradaic efficiency (FE) 98.0% −0.8 V. Utilizing CoPCOP@CNT as the catalyst cathode, Zn‐NO battery exhibits remarkable power density (5.34 mW cm −2 ), open‐circuit voltage (≈1.45 V), FE (94.6%), (29.15 ). The active intermediates reaction pathways CoPCOP in process are revealed by differential electrochemical mass spectroscopy theory calculations. This work highlights potential electrocatalysts based metal porphyrins conversion nitrogenous pollutant into .

Language: Английский

Cobalt Nanoparticles Encapsulated in N-Doped Carbon Nanotubes Assembled on Carbon Cloth for Efficient Electroreduction of Nitrite to Ammonia DOI
Ye Li, Xuping Sun, Huiyong Wang

et al.

Industrial & Engineering Chemistry Research, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 24, 2025

Electrochemical nitrite (NO2–) reduction provides an alternative pathway for both sustainable ammonia (NH3) synthesis and reutilization of NO2– pollutants, but this process requires high activity selective catalysts. In work, cobalt nanoparticles encapsulated in N-doped carbon nanotubes supported on cloth (Co@NCNT/CC) as a low-cost electrocatalyst can efficiently catalyze NO2–-to-NH3 conversion. Such Co@NCNT/CC shows exceptional electrocatalytic performance, achieving maximum NH3 Faradaic efficiency 94.9% with yield 365.1 μmol h–1 cm–2 at −0.3 V. Remarkably, the assembled Zn–NO2– battery cathode exhibits peak power density 4.4 mW satisfactory 141.5 cm–2.

Language: Английский

Citations

0
Conjugated Cobalt Porphyrin Polymer for Highly Active and Selective Electrocatalytic Nitrite Reduction to Ammonia DOI
Lisi Xie,

Benxing Mei,

Yabo Wang

et al.

Advanced Functional Materials, Journal Year: 2025, Volume and Issue: unknown

Published: April 15, 2025

Abstract Electrocatalytic nitrite (NO 2 − ) reduction RR) to ammonia (NH 3 is a promising green technology for producing NH with high efficiency. Cobalt macrocyclic complexes have attracted great interest because of their ability selectively convert NO , but suffer from low yields. Herein, cobalt porphyrin conjugated polymer on carbon nanotubes (CoPCOP@CNT) reported display exceptional RR performance large yield 133.39 mg h −1 CoP at −1.0 V and Faradaic efficiency (FE) 98.0% −0.8 V. Utilizing CoPCOP@CNT as the catalyst cathode, Zn‐NO battery exhibits remarkable power density (5.34 mW cm −2 ), open‐circuit voltage (≈1.45 V), FE (94.6%), (29.15 ). The active intermediates reaction pathways CoPCOP in process are revealed by differential electrochemical mass spectroscopy theory calculations. This work highlights potential electrocatalysts based metal porphyrins conversion nitrogenous pollutant into .

Language: Английский

Citations

0