Bimetallic metal–organic framework-derived MoFe-PC microspheres for electrocatalytic ammonia synthesis under ambient conditions

Chen, Silong; Jang, Haeseong; Wang, Jia; Qin, Qing; Liu, Xien; Cho, Jaephil

doi:10.1039/c9ta10524g

Cited by 60 publications

(47 citation statements)

References 65 publications

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“…Recently, MOF‐derived nanoparticles/microspheres have attracted a great deal of attention and have been applied as NRR catalysts owing to their porosity and high surface area, which can offer a fast charge transfer and plenty of active sites for electrocatalysis. [ 183–188 ]…”

Section: Defect Engineering By Employing Mofsmentioning

confidence: 99%

“…Apart from MOF‐derived nanoparticles, MOF‐derived microspheres have attracted much attention for NRR recently. [ 186,187 ] Chen and Jang et al. reported the direct preparation of MoFe‐PC (PC: phosphorus‐doped carbon) derived from bimetallic MoFe‐MOFs precursors through pyrolysis‐phosphating technique as an effective NRR electrocatalyst under ambient conditions.…”

Section: Defect Engineering By Employing Mofsmentioning

confidence: 99%

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The Role of Defects in Metal–Organic Frameworks for Nitrogen Reduction Reaction: When Defects Switch to Features

Khalil

Xue

Liu

et al. 2021

Adv Funct Materials

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The electrochemical nitrogen reduction reaction (NRR), a contributor for producing ammonia under mild conditions sustainably, has recently attracted global research attention. Thus far, the design of highly efficient electrocatalysts to enhance NRR efficiency is a specific focus of the research. Among them, defect engineering of electrocatalysts is considered a significant way to improve electrocatalytic efficiency by regulating the electronic state and providing more active sites that can give electrocatalysts better physicochemical properties. Recently, metal–organic frameworks (MOFs), along with their derivatives, have captured immense interest in electrocatalytic reactions owing to not only their large surface area and high porosity but also the ability to create rich defects in their structures. Hence, they can provide plenty of exposed active sites for electron transfer, NN cleavage, and N2 adsorption to enhance NRR performance. Herein, the concept, the in situ characterizations techniques for defects, and the most common ways to create defects into MOFs have been summarized. Furthermore, the recent advances of MOF‐based electrocatalysts towards NRR have been recapitulated. Ultimately, the major challenges and outlook of defects in MOFs for NRR are proposed. This paper is anticipated to provide critical guidelines for optimizing NRR electrocatalysts.

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Section: Defect Engineering By Employing Mofsmentioning

confidence: 99%

Section: Defect Engineering By Employing Mofsmentioning

confidence: 99%

The Role of Defects in Metal–Organic Frameworks for Nitrogen Reduction Reaction: When Defects Switch to Features

Khalil

Xue

Liu

et al. 2021

Adv Funct Materials

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“…Similarly, atomically dispersion of dimer was executed over defect‐rich graphene sheets. [ 94,95 ] In this work, Fe and Mo were dispersed individually and together on defect‐rich graphene sheets. [ 95,96 ] It was found that atomically dispersed Fe–Mo (together) exhibited better performance compared to individuals.…”

Section: Transition Metals or Elementsmentioning

confidence: 99%

“…[ 94,95 ] In this work, Fe and Mo were dispersed individually and together on defect‐rich graphene sheets. [ 95,96 ] It was found that atomically dispersed Fe–Mo (together) exhibited better performance compared to individuals. On investigating it as electrocatalyst for NRR, surprisingly, it manifested enormous efficiency of 41.7% with 14.95 µg h −1 mg cat −1 NH 3 yield rate at −0.2 V. It was revealed that existence of numerous sites not only detonate NN bond but also alternative pathway was efficiently adopted for nitrogen reduction.…”

Section: Transition Metals or Elementsmentioning

confidence: 99%

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Exploration and Investigation of Periodic Elements for Electrocatalytic Nitrogen Reduction

Patil

Wang

2020

Small

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Development of Electrocatalysts for Efficient Nitrogen Reduction Reaction under Ambient Condition

Liu

Chen

et al. 2020

Adv Funct Materials

143

120

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As one of the most important chemicals and an energy carrier, synthetic ammonia has been widely studied to meet the increasing demand. Among various strategies, electrochemical nitrogen reduction reaction (e‐NRR) is a promising way because of its green nature and easy set‐up on large‐scale. However, its practical application is extremely limited because of the very‐low production rate, which is strongly dependent on the electrocatalysts used. Therefore, searching novel efficient electrocatalysts for e‐NRR is essential to promote the technology. In this review, it highlights the insights on the mechanism for the NH3 electrochemical synthesis, recommend a reliable protocol for the ammonia detection, and systematically summarize the recent development on novel electrocatalysts, including noble metal‐based materials, single‐metal‐atom catalysts, non‐noble metal, and their compounds, and metal‐free materials, for efficient e‐NRR in both experimental and theoretical studies. Various strategies to improve the catalytic performance by increasing exposed active sites or tuning electronic structures, including surface control, defect engineering, and hybridization, are carefully discussed. Finally, perspectives and challenges are outlined. It can be expected that this review provides insightful guidance on the development of advanced catalytic systems to produce ammonia through N2 reduction.

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Bimetallic metal–organic framework-derived MoFe-PC microspheres for electrocatalytic ammonia synthesis under ambient conditions

Abstract: MoFe-PC exhibits a high yield rate and faradaic efficiency for NH3 electrosynthesis in acidic electrolytes due to the multicomponent active sites and inherent porous structure.

Cited by 60 publications

References 65 publications

The Role of Defects in Metal–Organic Frameworks for Nitrogen Reduction Reaction: When Defects Switch to Features

The Role of Defects in Metal–Organic Frameworks for Nitrogen Reduction Reaction: When Defects Switch to Features

Exploration and Investigation of Periodic Elements for Electrocatalytic Nitrogen Reduction

Development of Electrocatalysts for Efficient Nitrogen Reduction Reaction under Ambient Condition

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