具有氧空位的 NiMoO 纳米棒自支撑在 Ni 泡沫上，用于高效电催化将亚硝酸盐转化为氨。
NiMoO nanorods with oxygen vacancies self-supported on Ni foam towards high-efficiency electrocatalytic conversion of nitrite to ammonia.
机构信息
School of Mechanical Engineering, Chengdu University, Chengdu 610106, Sichuan, China.
School of Mechanical Engineering, Chengdu University, Chengdu 610106, Sichuan, China; Interdisciplinary Materials Research Center, Institute for Advanced Study, Chengdu University, Chengdu 610106, Sichuan, China.
出版信息
J Colloid Interface Sci. 2023 Oct;647:73-80. doi: 10.1016/j.jcis.2023.05.110. Epub 2023 May 22.
As an eco-friendly and sustainable strategy, the electrochemical reduction of nitrite (NO) can simultaneous generation of NH and treatment of NO contamination in the environment. Herein, monoclinic NiMoO nanorods with abundant oxygen vacancies self-supported on Ni foam (NiMoO/NF) are considered high-performance electrocatalysts for ambient NH synthesis by reduction of NO, which can deliver an outstanding yield of 18089.39 ± 227.98 μg h cm and a preferable FE of 94.49 ± 0.42% at -0.8 V. Additionally, its performance remains relatively stable during long-term operation as well as cycling tests. Furthermore, density functional theory calculations unveil the vital role of oxygen vacancies in promoting nitrite adsorption and activation, ensuring efficient NORR towards NH. A Zn-NO battery with NiMoO/NF as the cathode shows high battery performance as well.
作为一种环保且可持续的策略，亚硝酸盐（NO）的电化学还原可以同时产生 NH 并处理环境中的 NO 污染。在此，具有丰富氧空位的单斜 NiMoO 纳米棒自支撑在 Ni 泡沫（NiMoO/NF）上，被认为是通过还原 NO 来合成环境 NH 的高性能电催化剂，在-0.8 V 时可提供 18089.39±227.98μg h cm 的出色产率和 94.49±0.42%的优异 FE。此外，其性能在长期运行和循环测试中仍然相对稳定。此外，密度泛函理论计算揭示了氧空位在促进亚硝酸盐吸附和活化方面的重要作用，确保了高效的 NORR 向 NH 的转化。以 NiMoO/NF 为阴极的 Zn-NO 电池也表现出了高电池性能。
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