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Nano Research 2024, 17(4): 2276-2282 https://doi.org/10.1007/s12274-023-6204-y
Communication | Issue | Published: 23 October 2023

Fe-doped Co3O4 nanowire strutted 3D pinewood-derived carbon: A highly selective electrocatalyst for ammonia production via nitrate reduction

Show Author's Information Xuwei Liu1,  Chaozhen Liu2,  Xun He1,  Zhengwei Cai3,  Kai Dong3,  Jun Li1,  Xiaoya Fan1,  Ting Xie1,  Xiya Yang1,  Yonglan Luo1,  Dongdong Zheng3,  Shengjun Sun3,  Sulaiman Alfaifi4,  Feng Gong2( ),  Xuping Sun1,3( )
Institute of Fundamental and Frontier Sciences, University of Electronic Science and Technology of China, Chengdu 610054, China
Key Laboratory of Energy Thermal Conversion and Control of Ministry of Education, School of Energy and Environment, Southeast University, Nanjing 211189, China
College of Chemistry, Chemical Engineering and Materials Science, Shandong Normal University, Jinan 250014, China
Chemistry Department, Frontier of Science, King Abdulaziz University, Jeddah 21589, Saudi Arabia
Keywords:
density functional theory, NH3 synthesis, Fe-doped Co3O4 nanowire, pinewood-derived carbon, electrocatalytic NO3− reduction
Topics:
Electrocatalysis
Cite this article:
Liu X, Liu C, He X, et al. Fe-doped Co3O4 nanowire strutted 3D pinewood-derived carbon: A highly selective electrocatalyst for ammonia production via nitrate reduction. Nano Research, 2024, 17(4): 2276-2282. https://doi.org/10.1007/s12274-023-6204-y
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Abstract Full text Electronic supplementary material About this article

Nitrate (NO3−), a nitrogen-containing pollutant, is prevalent in aqueous solutions, contributing to a range of environmental and health-related issues. The electrocatalytic reduction of NO3− holds promise as a sustainable approach to both eliminating NO3− and generating valuable ammonia (NH3). Nevertheless, the reduction reaction of NO3− (NO3−RR), involving 8-electron transfer process, is intricate, necessitating highly efficient electrocatalysts to facilitate the conversion of NO3− to NH3. In this study, Fe-doped Co3O4 nanowire strutted three-dimensional (3D) pinewood-derived carbon (Fe-Co3O4/PC) is proposed as a high-efficiency NO3−RR electrocatalyst for NH3 production. Operating within 0.1 M NaOH containing NO3−, Fe-Co3O4/PC demonstrates exceptional performance, obtain an impressively large NH3 yield of 0.55 mmol·h−1·cm−2 and an exceptionally high Faradaic efficiency of 96.5% at −0.5 V, superior to its Co3O4/PC counterpart (0.2 mmol·h−1·cm−2, 73.3%). Furthermore, the study delves into the reaction mechanism of Fe-Co3O4 for NO3−RR through theoretical calculations.


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About this article

Fe-doped Co3O4 nanowire strutted 3D pinewood-derived carbon: A highly selective electrocatalyst for ammonia production via nitrate reduction

Show Author's information Xuwei Liu1, Chaozhen Liu2, Xun He1, Zhengwei Cai3, Kai Dong3, Jun Li1, Xiaoya Fan1, Ting Xie1, Xiya Yang1, Yonglan Luo1, Dongdong Zheng3, Shengjun Sun3, Sulaiman Alfaifi4, Feng Gong2( ), Xuping Sun1,3( )
Institute of Fundamental and Frontier Sciences, University of Electronic Science and Technology of China, Chengdu 610054, China
Key Laboratory of Energy Thermal Conversion and Control of Ministry of Education, School of Energy and Environment, Southeast University, Nanjing 211189, China
College of Chemistry, Chemical Engineering and Materials Science, Shandong Normal University, Jinan 250014, China
Chemistry Department, Frontier of Science, King Abdulaziz University, Jeddah 21589, Saudi Arabia

Abstract

Nitrate (NO3−), a nitrogen-containing pollutant, is prevalent in aqueous solutions, contributing to a range of environmental and health-related issues. The electrocatalytic reduction of NO3− holds promise as a sustainable approach to both eliminating NO3− and generating valuable ammonia (NH3). Nevertheless, the reduction reaction of NO3− (NO3−RR), involving 8-electron transfer process, is intricate, necessitating highly efficient electrocatalysts to facilitate the conversion of NO3− to NH3. In this study, Fe-doped Co3O4 nanowire strutted three-dimensional (3D) pinewood-derived carbon (Fe-Co3O4/PC) is proposed as a high-efficiency NO3−RR electrocatalyst for NH3 production. Operating within 0.1 M NaOH containing NO3−, Fe-Co3O4/PC demonstrates exceptional performance, obtain an impressively large NH3 yield of 0.55 mmol·h−1·cm−2 and an exceptionally high Faradaic efficiency of 96.5% at −0.5 V, superior to its Co3O4/PC counterpart (0.2 mmol·h−1·cm−2, 73.3%). Furthermore, the study delves into the reaction mechanism of Fe-Co3O4 for NO3−RR through theoretical calculations.

Keywords: density functional theory, NH3 synthesis, Fe-doped Co3O4 nanowire, pinewood-derived carbon, electrocatalytic NO3− reduction

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Received: 25 August 2023
Revised: 14 September 2023
Accepted: 14 September 2023
Published: 23 October 2023
Issue date: April 2024

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