Bismuth hollow nanospheres for efficient electrosynthesis of ammonia under ambient conditions

Wang, Jiajun; Ren, Yanmei; Chen, Muhua; Cao, Guoxuan; Chen, Zhengjun; Wang, Ping

doi:10.1016/j.jallcom.2020.154668

Cited by 15 publications

(8 citation statements)

References 36 publications

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“…Finally, the overall performance of sample Bi-S6 can be deemed as rather moderate, with an ammonia yield of 107 ± 0.1 μg h –1 cm –2 at −1.8 V and a maximum FE of 0.96 ± 0.2% at −1.7 V. The ameliorated NRR performance of sample Bi-S5 in comparison to the rest of the samples can be mainly assigned to its thin 2D hexagonal-plate morphology, as shown by AFM: this endows a high surface area with numerous active sites such as edges and corners, which are easily accessed by the reagents. The enhanced possibility for the reagent molecules to collide with the active sites favors a quite good NRR activity . Apparently, the surface oxidation of Bi nanoplates did not affect the electrocatalytic performance of Bi-S5 to a significant extent.…”

Section: Results and Discussionmentioning

confidence: 99%

Simple Bottom-Up Synthesis of Bismuthene Nanostructures with a Suitable Morphology for Competitive Performance in the Electrocatalytic Nitrogen Reduction Reaction

et al. 2022

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Nitrogen reduction to ammonia under ambient conditions has received important attention, in which high-performing catalysts are sought. A new, facile, and seedless solvothermal method based on a high-temperature reduction route has been developed in this work for the production of bismuthene nanostructures with excellent performance in the electrocatalytic nitrogen reduction reaction (NRR). Different reaction conditions were tested, such as the type of solvent, surfactant, reducing agent, reaction temperature, and time, as well as bismuth precursor source, resulting in distinct particle morphologies. Two-dimensional sheet-like structures and small particles displayed very high electrocatalytic activity, attributed to the abundance of tips, edges, and high surface area. NRR experiments resulted in an ammonia yield of 571 ± 0.1 μg h −1 cm −2 with a respective Faradaic efficiency of 7.94 ± 0.2% vs Ag/AgCl. The easy implementation of the synthetic reaction to produce Bi nanostructures facilitates its potential scale up to larger production yields.

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Section: Results and Discussionmentioning

confidence: 99%

Simple Bottom-Up Synthesis of Bismuthene Nanostructures with a Suitable Morphology for Competitive Performance in the Electrocatalytic Nitrogen Reduction Reaction

et al. 2022

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“…With the hollow Bi nanospheres as cathode materials, NRR was performed in N 2 -saturated 0.1 m Na 2 SO 4 , and the highest NH 3 yield was 23.4 ± 1.3 μg h −1 mg −1 cat. at −0.4 V versus RHE, with the corresponding FE of 19.8 ± 1.1%, which was over 2 times [130] Copyright 2020, Elsevier. c) TEM image of CoPc NTs.…”

Section: Intrinsic Regulation Of Hollow Structural Catalystsmentioning

confidence: 95%

“…reported a simple one‐pot solvent method to prepare hollow and solid Bi nanospheres ( Figure 6 a ). [ 130 ] The specific surface area of hollow Bi nanospheres (23.7 m 2 g −1 ) was nearly 16 times larger than that of solid Bi nanospheres (Figure 6b ). Undoubtedly, such a high accessible surface area exposed more active sites.…”

Section: Hollow Structural Materials As Nrr Catalystsmentioning

confidence: 99%

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Rational Synthesis and Regulation of Hollow Structural Materials for Electrocatalytic Nitrogen Reduction Reaction

Xue

Zhou

et al. 2021

Advanced Science

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The electrocatalytic nitrogen reduction reaction (NRR) is known as a promising mean of nitrogen fixation to mitigate the energy crisis and facilitate fertilizer production under mild circumstances. For electrocatalytic reactions, the design of efficient catalysts is conducive to reducing activation energy and accelerating lethargic dynamics. Among them, hollow structural materials possess cavities in their structures, which can slack off the escape rate of N 2 and reaction intermediates, prolong the residence time of N 2 , enrich the reaction intermediates' concentration, and shorten electron transportation path, thereby further enhancing their NRR activity. Here, the basic synthetic strategies of hollow structural materials are introduced first. Then, the recent breakthroughs in hollow structural materials as NRR catalysts are reviewed from the perspective of intrinsic, mesoscopic, and microscopic regulations, aiming to discuss how structures affect and improve the catalytic performance. Finally, the future research directions of hollow structural materials as NRR catalysts are discussed. This review is expected to provide an outlook for optimizing hollow structural NRR catalysts.

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“…[26] In recent years, bismuth (Bi), as an earth-abundant main group metal element with regulated pelectron density and weak hydrogen adsorption, has gained more and more attention for use in NRR. [27,28] Bi-based catalysts, including metallic bismuth (Bi 0 ), [29,30] Bi-based oxides, [31,32] and Bibased hybrids, [33,34] have been demonstrated as promising NRR electrocatalysts. Taking Bi 2 O 3 as an example, it has several obvious advantages for use in NRR such as low cost, high chemical stability, easily prepared and relative nontoxicity, but it suffers from limited conductivity and sluggish activation/ adsorption of *H. [31] Fabricating a "multicomponent" hybrid catalyst, in which different components can play crucial parts as the active catalytic centers, electronic transmission parts, the inert HER competitive sites, and the substrate, should hold high potential to enhance the NRR performance of Bi 2 O 3 .…”

Section: Introductionmentioning

confidence: 99%

Synergy of Bi₂O₃ and RuO₂ Nanocatalysts for Low‐Overpotential and Wide pH‐Window Electrochemical Ammonia Synthesis

Yu²,

Deng

et al. 2021

Chemistry A European J

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Electrocatalytic nitrogen reduction reaction (NRR) under ambient conditions is still seriously impeded by the inferior NH 3 yield and low Faradaic efficiency, especially at low overpotentials. Herein, we report the synthesis of nanosized RuO 2 and Bi 2 O 3 particles grown on functionalized exfoliated graphene (FEG) through in situ electrodeposition, denoted as RuO 2 À Bi 2 O 3 /FEG. The prepared self-supporting RuO 2 À Bi 2 O 3 /FEG hybrid with a Bi mass loading of 0.70 wt% and Ru mass loading of 0.04 wt% shows excellent NRR performance at low overpotentials in acidic, neutral and alkaline electrolytes. It achieves a large NH 3 yield of 4.58 � 0.16 μg NH3 h À 1 cm À 2 with a high Faradaic efficiency of 14.6 % at À 0.2 V versus reversible hydrogen electrode in 0.1 M Na 2 SO 4 electrolyte. This performance benefits from the synergistic effect between Bi 2 O 3 and RuO 2 which respectively have a fairly strong interaction of Bi 6p orbitals with the N 2p band and abundant supply of *H, as well as the binder-free characteristic and the convenient electron transfer via graphene nanosheets. This work highlights a new electrocatalyst design strategy that combines transition and maingroup metal elements, which may provide some inspirations for designing low-cost and high-performance NRR electrocatalysts in the future.

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Bismuth hollow nanospheres for efficient electrosynthesis of ammonia under ambient conditions

Cited by 15 publications

References 36 publications

Simple Bottom-Up Synthesis of Bismuthene Nanostructures with a Suitable Morphology for Competitive Performance in the Electrocatalytic Nitrogen Reduction Reaction

Simple Bottom-Up Synthesis of Bismuthene Nanostructures with a Suitable Morphology for Competitive Performance in the Electrocatalytic Nitrogen Reduction Reaction

Rational Synthesis and Regulation of Hollow Structural Materials for Electrocatalytic Nitrogen Reduction Reaction

Synergy of Bi₂O₃ and RuO₂ Nanocatalysts for Low‐Overpotential and Wide pH‐Window Electrochemical Ammonia Synthesis

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Bismuth hollow nanospheres for efficient electrosynthesis of ammonia under ambient conditions

Cited by 15 publications

References 36 publications

Simple Bottom-Up Synthesis of Bismuthene Nanostructures with a Suitable Morphology for Competitive Performance in the Electrocatalytic Nitrogen Reduction Reaction

Simple Bottom-Up Synthesis of Bismuthene Nanostructures with a Suitable Morphology for Competitive Performance in the Electrocatalytic Nitrogen Reduction Reaction

Rational Synthesis and Regulation of Hollow Structural Materials for Electrocatalytic Nitrogen Reduction Reaction

Synergy of Bi2O3 and RuO2 Nanocatalysts for Low‐Overpotential and Wide pH‐Window Electrochemical Ammonia Synthesis

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Synergy of Bi₂O₃ and RuO₂ Nanocatalysts for Low‐Overpotential and Wide pH‐Window Electrochemical Ammonia Synthesis