A Zn–nitrite battery as an energy-output electrocatalytic system for high-efficiency ammonia synthesis using carbon-doped cobalt oxide nanotubes

Zhang, Rong; Zhang, Shaoce; Guo, Ying; Li, Chuan; Liu, Jiahua; Huang, Zhaodong; Zhao, Yuwei; Li, Yang Yang; Chen, Zhi

doi:10.1039/d2ee00686c

Cited by 119 publications

(73 citation statements)

References 45 publications

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“…[22,23] Non-metallic carbon-based materials, monometallic based materials (including precious metals such as Pd, Pt, Rh, Ru, Ir and transition metals such as Cu, In, Sn, Fe, Ni, Ti, Co), and bimetallic based materials have been widely studied in the literature (precious and transition metals). [24][25][26][27][28][29][30][31] Among these, bimetallic electrocatalysts (e.g., CuPd alloys) that combine the benefits of different metals exhibit high catalytic activity and product selectivity. However, due to a scarcity of precious Nitrate has a high level of stability and persistence in water, endangering human health and aquatic ecosystems.…”

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confidence: 99%

Iron‐Based Nanocatalysts for Electrochemical Nitrate Reduction

et al. 2022

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Iron‐Based Nanocatalysts for Electrochemical Nitrate Reduction

et al. 2022

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“…The PEC catalytic performances of two-electrode configuration for selective oxidation of BA and NO 2 − reduction were measured at different potentials under irradiation by visible light in a H-type PEC cell. From the reaction thermodynamic potentials of benzyl alcohol oxidation and nitrite reduction, [74,75] it is reasonable to apply a certain of overpotential, driving these reactions in this two-electrode system. Before the test, the photoanode and photocathode cell were purged with argon to remove the impact of air on the test.…”

Section: Resultsmentioning

confidence: 99%

Simultaneous Photoelectrocatalytic Oxidation and Nitrite‐Ammonia Conversion with Artificial Photoelectrochemistry Cells

Song

Cao

et al. 2022

Advanced Energy Materials

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Artificial photoelectrochemistry system harvests solar energy for solar fuel conversion by use of semiconductor anode and cathode. However, the low overall performance of this integrated system is limited by the compatibility and durability. Herein, a compact heterostructure photoanode exhibits >98% selective photoelectrocatalytic oxidation conversion and >99% Faradaic efficiency of benzyl alcohol oxidation at 0.67 V versus reversible hydrogen electrode in comparison of single‐phase photoanodes. Density functional theory calculations reveal the heterointerface is responsible for the appreciable electronic interaction and the accelerated charge transport, exploring the radical relay pathway as the selective oxidation mechanism. Especially, the integrated photoelectrochemistry cell is developed by heterostructure photoanode and protective photocathode, simultaneously enabling the efficient photoelectrocatalytic oxidation conversion and nitrite reduction reaction to ammonia synthesis under ambient conditions with a maximum Faradaic efficiency >98%. This work sheds light on rational design and the construction of artificial photoelectrochemistry cells towards solar energy conversion.

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“…The abovementioned HER suppression strategies for N 2 RR are also achievable for NO 3 RR, which might lead to a higher rate and FE toward NH 3 synthesis. Inspired by the metal–N 2 batteries, it is also worth exploring the metal–NO x – battery systems, which have considerable power density. − Taken together, further practical applications of p-block-element-based catalysts for NO 3 RR require rational materials design, technological processes, and product separation to fully address the feasibility of such a sustainable route.…”

Section: Conclusion Challenges and Outlookmentioning

confidence: 99%

Emerging p-Block-Element-Based Electrocatalysts for Sustainable Nitrogen Conversion

Liu

Lee

et al. 2022

ACS Nano

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Artificial nitrogen conversion reactions, such as the production of ammonia via dinitrogen or nitrate reduction and the synthesis of organonitrogen compounds via C−N coupling, play a pivotal role in the modern life. As alternatives to the traditional industrial processes that are energy-and carbon-emission-intensive, electrocatalytic nitrogen conversion reactions under mild conditions have attracted significant research interests. However, the electrosynthesis process still suffers from low product yield and Faradaic efficiency, which highlight the importance of developing efficient catalysts. In contrast to the transition-metal-based catalysts that have been widely studied, the p-block-element-based catalysts have recently shown promising performance because of their intriguing physiochemical properties and intrinsically poor hydrogen adsorption ability. In this Perspective, we summarize the latest breakthroughs in the development of p-block-elementbased electrocatalysts toward nitrogen conversion applications, including ammonia electrosynthesis from N 2 reduction and nitrate reduction and urea electrosynthesis using nitrogen-containing feedstocks and carbon dioxide. The catalyst design strategies and the underlying reaction mechanisms are discussed. Finally, major challenges and opportunities in future research directions are also proposed.

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A Zn–nitrite battery as an energy-output electrocatalytic system for high-efficiency ammonia synthesis using carbon-doped cobalt oxide nanotubes

Abstract: Ammonia (NH3) is a carbon-free fuel and essential for producing chemicals like fertilizer. The conversion of toxic nitrite (NO2-) ions from contaminated water to NH3 in an electrocatalytic system is...

Cited by 119 publications

References 45 publications

Iron‐Based Nanocatalysts for Electrochemical Nitrate Reduction

Iron‐Based Nanocatalysts for Electrochemical Nitrate Reduction

Simultaneous Photoelectrocatalytic Oxidation and Nitrite‐Ammonia Conversion with Artificial Photoelectrochemistry Cells

Emerging p-Block-Element-Based Electrocatalysts for Sustainable Nitrogen Conversion

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