2D Multivariate‐Metal‐Organic Frameworks (2D‐M2OF) for High Yield Ammonia Synthesis from Nitrate

IF 26 1区材料科学 Q1 CHEMISTRY, PHYSICAL

Advanced Energy Materials Pub Date : 2025-07-21 DOI:10.1002/aenm.202405031

Shahriar Namvar, Arash Namaeighasemi, Syed Ibrahim Gnani Peer Mohamed, Ugochukwu Nwosu, Mohammad Arham Khan, Nikita Gupta, Abdul Motakkaber Sarkar, Taha Raja, Ahmad Jaradat, Ilias Papailias, Ksenija Glusac, Samira Siahrostami, Siamak Nejati, Amin Salehi‐Khojin

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引用次数: 0

Abstract

Ammonia synthesis from nitrate offers a promising approach for both nitrate removal and nitrogen recycling. In this study, a series of 2D multivariate‐metal‐organic frameworks (M2OFs) is synthesized, incorporating transition metals such as Co, Ni, Mn, and Ag to enhance these processes. These M2OFs exhibit remarkable ammonia production performance, with the highest performance achieved using the quaternary structure exceeding a current density of 1 A cm−2 at −0.8 V vs RHE, with an ammonia Faradic efficiency (F.E.) of ≈90%, and a yield rate of 68 mg h−1cm−2. Our findings reveal that the synergy among different metal centers in M2OFs provides a new efficient reaction pathway for nitrate reduction via surface hydrogen co‐adsorption, a mechanism not attainable with single‐metal MOFs.

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2D多元-金属-有机框架（2D - M2OF）用于硝酸盐高产氨合成

硝态氮合成氨为硝态氮的去除和氮的循环利用提供了一种很有前途的方法。在本研究中，合成了一系列二维多元金属有机框架（M2OFs），并加入了Co、Ni、Mn和Ag等过渡金属来增强这些过程。这些M2OFs具有显著的制氨性能，在- 0.8 V vs RHE电流密度超过1 a cm−2的情况下，采用季元结构获得了最高的性能，氨的法拉迪效率（F.E.）约为90%，产率为68 mg h−1cm−2。我们的研究结果表明，M2OFs中不同金属中心之间的协同作用为通过表面氢共吸附还原硝酸盐提供了一种新的高效反应途径，这是单金属mof无法实现的。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Advanced Energy Materials CHEMISTRY, PHYSICAL-ENERGY & FUELS

CiteScore

41.90

自引率

4.00%

发文量

889

审稿时长

1.4 months

期刊介绍： Established in 2011, Advanced Energy Materials is an international, interdisciplinary, English-language journal that focuses on materials used in energy harvesting, conversion, and storage. It is regarded as a top-quality journal alongside Advanced Materials, Advanced Functional Materials, and Small. With a 2022 Impact Factor of 27.8, Advanced Energy Materials is considered a prime source for the best energy-related research. The journal covers a wide range of topics in energy-related research, including organic and inorganic photovoltaics, batteries and supercapacitors, fuel cells, hydrogen generation and storage, thermoelectrics, water splitting and photocatalysis, solar fuels and thermosolar power, magnetocalorics, and piezoelectronics. The readership of Advanced Energy Materials includes materials scientists, chemists, physicists, and engineers in both academia and industry. The journal is indexed in various databases and collections, such as Advanced Technologies & Aerospace Database, FIZ Karlsruhe, INSPEC (IET), Science Citation Index Expanded, Technology Collection, and Web of Science, among others.