A 3D FeOOH nanotube array: an efficient catalyst for ammonia electrosynthesis by nitrite reduction

Liu, Qin; Liu, Qian; Xie, Lisi; Yue, Luchao; Li, Tingshuai; Luo, Yongsong; Li, Na; Tang, Bo; Li, Yu; Sun, Xuping

doi:10.1039/d2cc00611a

Cited by 29 publications

(24 citation statements)

References 47 publications

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“…Our group also created an FeOOH nanotube array with a high surface area and fast electron transport to reduce NO2 − (Fig. 25(f)) [424]. The catalyst had a negative Eonset but produced a high j and NH3 yield.…”

Section: Electrochemical Reduction Of Nitrogen Oxyanionsmentioning

confidence: 99%

Recent advances in nanostructured heterogeneous catalysts for N-cycle electrocatalysis

Sun

Liang

Liu

et al. 2022

Nano Research Energy

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To restore the natural nitrogen cycle (N-cycle), artificial N-cycle electrocatalysis with flexibility, sustainability, and compatibility can convert intermittent renewable energy (e.g., wind) to harmful or value-added chemicals with minimal carbon emissions. The background of such N-cycles, such as nitrogen fixation, ammonia oxidation, and nitrate reduction, is briefly introduced here. The discussion of emerging nanostructures in various conversion reactions is focused on the architecture/compositional design, electrochemical performances, reaction mechanisms, and instructive tests. Energy device advancements for achieving more functions as well as in situ/operando characterizations toward understanding key steps are also highlighted. Furthermore, some recently proposed reactions as well as less discussed C-N coupling reactions are also summarized. We classify inorganic nitrogen sources that convert to each other under an applied voltage into three types, namely, abundant nitrogen, toxic nitrate (nitrite), and nitrogen oxides, and useful compounds such as ammonia, hydrazine, and hydroxylamine, with the goal of providing more critical insights into strategies to facilitate the development of our circular nitrogen economy.

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Section: Electrochemical Reduction Of Nitrogen Oxyanionsmentioning

confidence: 99%

Recent advances in nanostructured heterogeneous catalysts for N-cycle electrocatalysis

Sun

Liang

Liu

et al. 2022

Nano Research Energy

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340

229

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“…In detail, the peaks located at 712.6 and 725.9 eV are related to Fe–N, which are typical peaks of metal nitrides. The peaks at around 710.4 and 723.8 eV can be ascribed to Fe 2+ involved in Fe–N/O. , The peaks centered at 712.9 and 727.0 eV are related to Fe 3+ . Apparently, after SC CO 2 treatment, the Fe–N signals disappeared, and the other peaks shift to higher energy, indicating that the Fe–N bonds were broken and new bonds formed due to the effect of SC CO 2 .…”

Section: Results and Discussionmentioning

confidence: 94%

“…26,27 The peaks centered at 712.9 and 727.0 eV are related to Fe 3+ . 28 Apparently, after SC CO 2 treatment, the Fe−N signals disappeared, and the other peaks shift to higher energy, indicating that the Fe−N bonds were broken and new bonds formed due to the effect of SC CO 2 . In the high-resolution O 1s spectra (Figure 2c), three peaks located at 529.6, 531.0, and 532.1 eV are observed in both Fe x N and 2D Fe x N@FeOOH samples, assigned to Fe−O, Fe−OH/Fe−ON, and adsorbed H 2 O, respectively.…”

Section: ■ Results and Discussionmentioning

confidence: 96%

Supercritical CO₂-Built 2D Fe_xN@FeOOH Heterostructures for Sustainable Sodium Ion Battery

et al. 2022

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Due to its earth abundance and environmental friendliness, an iron-based sodium ion battery is promising for scalable applications. Fabricating a two-dimensional iron-based heterostructure and application of this kind of material in a battery is of great interest, while it is challenging. Herein, for the first time, a facile and feasible supercritical CO2 (SC CO2)-switching strategy has been successfully employed to fabricate 2D ultrathin Fe x N@FeOOH heterostructures, and the as-prepared heterostructure exhibits a reversible capacity of 526.4 mAh g–1 as an anode material for a sodium ion battery.

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“…Furthermore, hydrogen evolution is inhibited on FeOOH, which is beneficial for improving the selectivity of NO 3 – reduction. This study not only offers us a cost-effective method to convert NO 3 – into NH 3 under mild conditions but also opens up a new opportunity to exploring Fe-based nanostructures for applications in NO 3 – reduction electrocatalysis …”

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confidence: 97%

High-Performance Electrochemical Nitrate Reduction to Ammonia under Ambient Conditions Using a FeOOH Nanorod Catalyst

Liu

Xie

et al. 2022

ACS Appl. Mater. Interfaces

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Electrocatalytic nitrate reduction is promising as an environmentally friendly process to produce high value-added ammonia with simultaneous removal of nitrate, a widespread nitrogen pollutant, for water treatment; however, efficient electrocatalysts with high selectivity are required for ammonia formation. In this work, FeOOH nanorod with intrinsic oxygen vacancy supported on carbon paper (FeOOH/CP) is proposed as a high-performance electrocatalyst for converting nitrate to ammonia at room temperature. When operated in a 0.1 M phosphate-buffered saline (PBS) solution with 0.1 M NaNO3, FeOOH/CP is able to obtain a large NH3 yield of 2419 μg h–1 cm–2 and a surprisingly high Faradic efficiency of 92% with excellent stability. Density functional theory calculation demonstrates that the potential-determining step for nitrate reduction over FeOOH (200) is *NO2H + H+ + e– → *NO + H2O.

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A 3D FeOOH nanotube array: an efficient catalyst for ammonia electrosynthesis by nitrite reduction

Abstract: Nitrite (NO2–) is a detrimental inorganic pollutant and widely exists in groundwater sources, threatening public health. Electrocatalytic NO2– reduction settles the demand for removal of NO2– and offers a promising...

Cited by 29 publications

References 47 publications

Recent advances in nanostructured heterogeneous catalysts for N-cycle electrocatalysis

Recent advances in nanostructured heterogeneous catalysts for N-cycle electrocatalysis

Supercritical CO₂-Built 2D Fe_xN@FeOOH Heterostructures for Sustainable Sodium Ion Battery

High-Performance Electrochemical Nitrate Reduction to Ammonia under Ambient Conditions Using a FeOOH Nanorod Catalyst

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A 3D FeOOH nanotube array: an efficient catalyst for ammonia electrosynthesis by nitrite reduction

Abstract: Nitrite (NO2–) is a detrimental inorganic pollutant and widely exists in groundwater sources, threatening public health. Electrocatalytic NO2– reduction settles the demand for removal of NO2– and offers a promising...

Cited by 29 publications

References 47 publications

Recent advances in nanostructured heterogeneous catalysts for N-cycle electrocatalysis

Recent advances in nanostructured heterogeneous catalysts for N-cycle electrocatalysis

Supercritical CO2-Built 2D FexN@FeOOH Heterostructures for Sustainable Sodium Ion Battery

High-Performance Electrochemical Nitrate Reduction to Ammonia under Ambient Conditions Using a FeOOH Nanorod Catalyst

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Resources

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Supercritical CO₂-Built 2D Fe_xN@FeOOH Heterostructures for Sustainable Sodium Ion Battery