Recent progress in ammonia synthesis based on photoelectrocatalysis

Li, Pengyan; Liu, Yumin; Mushtaq, Muhammad; Yan, Dongpeng

doi:10.1039/d3qi00683b

Cited by 21 publications

(7 citation statements)

References 147 publications

(184 reference statements)

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“…Single-atom catalysts (SACs) with an isolated metal atom coordinated on a carbon substrate have recently been demonstrated to deliver superior performance in various electrocatalysis fields, such as the oxygen reduction reaction, hydrogen evolution reaction (HER), and carbon dioxide reduction reaction. 17–22 The maximum atom-utilization efficiency, together with the unique electronic structure and coordination environment, have been proven to contribute to the high activity and selectivity. 23–26 However, for efficient NRR as a multi-intermediate reaction, any ambition by SACs with a monotonous active site seems to be in vain.…”

Section: Introductionmentioning

confidence: 99%

Breaking scaling relations in nitrogen reduction with asymmetrical heterobimetallic FeCo sites to boost ammonia synthesis

Xu,

He,

Wang

et al. 2024

Mater. Chem. Front.

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Section: Introductionmentioning

confidence: 99%

Breaking scaling relations in nitrogen reduction with asymmetrical heterobimetallic FeCo sites to boost ammonia synthesis

Xu,

He,

Wang

et al. 2024

Mater. Chem. Front.

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“…The development of effective electrocatalysts by adopting an energy-saving and environmentally friendly method has paved the way for electrochemical N 2 reduction reaction (NRR) as a clean and sustainable alternative technique for the synthesis of NH 3 at more benign conditions. − Nevertheless, proficient electrocatalysts are required for the electrocatalytic NRR in order to easily activate the strong N 2 triple bond as well as suppress the competing hydrogen evolution reaction (HER), which in turn can boost up the yield as well as Faradaic efficiency (FE) of NRR …”

Section: Introductionmentioning

confidence: 99%

Nanocrystalline CeMo₂O₈ Catalyst for Electroreduction of N₂ to NH₃

Sebastian,

Das,

Gopalan

2024

ACS Appl. Nano Mater.

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Nitrogen reduction reaction (NRR) could be a renewable replacement for the energy-intensive Haber−Bosch approach for synthesizing NH 3 . Hence, the electrocatalytic NRR powered by renewable energy sources under milder conditions as a green and sustainable approach for NH 3 production has attracted excellent interest these days. In this approach, electrocatalysts act as the core of the NRR. However, developing efficient electrocatalysts is highly required for this method, as the existing electrocatalysts severely suffer with less activity and selectivity. Herein, we report a metal oxide, CeMo 2 O 8 , as an efficient electrocatalyst for NRR with a notable yield and FE of 55.7 μg h −1 mg −1 cat and 48% at −0.50 V in 0.1 M HCl. The experimental observations of CeMo 2 O 8 have proven that the synergistic interaction between Ce and Mo favors the Ce 4+ /Ce 3+ redox cycle and thus increases the amount of Ce 3+ . The abundant oxygen vacancies in the synthesized electrocatalyst contribute to an elevated activity and selectivity.

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“…In recent years, a wide range of transition metals and nonprecious metal-based hybrid materials have been developed for electrocatalytic HER and oxygen evolution reaction (OER) water splitting. [29][30][31][32][33][34][35][36][37] In the present work, low content of nickel (Ni) and Pt NPs decorated CNF (Ni-Pt/CNFs) were prepared using a simple and efficient approach that combines electrospinning and calcination process. Morphological and energy dispersive X-ray (EDX) analysis revealed that the low content of Ni-Pt NPs is dispersed on the CNF surface.…”

Section: Introductionmentioning

confidence: 99%

Low content of Ni‐Pt nanoparticles decorated carbon nanofibers as efficient electrocatalyst for hydrogen evolution reaction

Sakthivel,

Ramachandran,

Balraj

et al. 2024

J of Chemical Tech & Biotech

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BackgroundAmong various technologies, electrochemical water splitting is one of the most effective and promising techniques for obtaining hydrogen fuel. The low content of nickel–platinum (Ni‐Pt) nanoparticles (NPs) decorated on carbon nanofibers (CNFs) have been developed by the electrospinning technique and subsequent carbonization process for use in an effective hydrogen evolution reaction (HER) in both acidic and alkaline mediums.ResultsThe Ni‐Pt ions are reduced to Ni‐Pt NPs during the carbonization process, while polyacrylonitrile nanofibers are simultaneously changed into carbon nanofibers. Field emission scanning electron microscopy (FE‐SEM) with energy dispersive X‐ray (EDX) and transmission electron microscopy (TEM) analysis of the prepared Ni‐Pt/CNFs shows that the low content of Ni and Pt NPs is evenly dispersed on the carbon nanofibers. This implies that for close contacts, there is an effective charge transfer between the NPs and the CNFs system. The obtained Ni‐Pt/CNFs exhibit enhanced HER performance along with onset potential (η1/23 mV in ~0 pH and η1/33 mV in ~14 pH) and overpotential (η10/128 mV in pH ~0 and η10/152 mV in pH ~14) versus RHE. Furthermore, stability for a long time was attained without considerable decay by 24 h. The turnover frequency (TOF) value was 3.431 s−1 in acidic and 1.174 s−1 in alkaline electrolytes.ConclusionThe enhanced HER performance could be ascribed to the synergetic effects between the carbon fibers and the Ni‐Pt NPs. This work demonstrates an easy technique for producing highly effective electrocatalysts for water splitting and has significant implications for renewable energy. © 2024 Society of Chemical Industry (SCI).

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Recent progress in ammonia synthesis based on photoelectrocatalysis

Abstract: Photoelectrocatalytic (PEC) ammonia synthesis from nitrogen and water is a promising approach in energy development and N-neutralization under mild conditions. Despite significant progress has been made in the past few...

Cited by 21 publications

References 147 publications

Breaking scaling relations in nitrogen reduction with asymmetrical heterobimetallic FeCo sites to boost ammonia synthesis

Breaking scaling relations in nitrogen reduction with asymmetrical heterobimetallic FeCo sites to boost ammonia synthesis

Nanocrystalline CeMo₂O₈ Catalyst for Electroreduction of N₂ to NH₃

Low content of Ni‐Pt nanoparticles decorated carbon nanofibers as efficient electrocatalyst for hydrogen evolution reaction

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Recent progress in ammonia synthesis based on photoelectrocatalysis

Abstract: Photoelectrocatalytic (PEC) ammonia synthesis from nitrogen and water is a promising approach in energy development and N-neutralization under mild conditions. Despite significant progress has been made in the past few...

Cited by 21 publications

References 147 publications

Breaking scaling relations in nitrogen reduction with asymmetrical heterobimetallic FeCo sites to boost ammonia synthesis

Breaking scaling relations in nitrogen reduction with asymmetrical heterobimetallic FeCo sites to boost ammonia synthesis

Nanocrystalline CeMo2O8 Catalyst for Electroreduction of N2 to NH3

Low content of Ni‐Pt nanoparticles decorated carbon nanofibers as efficient electrocatalyst for hydrogen evolution reaction

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Product

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Nanocrystalline CeMo₂O₈ Catalyst for Electroreduction of N₂ to NH₃