Yin Shiyue, Guan Zhixi, Zhu Yuchuan, Guo Daying, Chen Xi'an, Wang Shun
Key Laboratory of Carbon Materials of Zhejiang Province, College of Chemistry and Materials Engineering, Wenzhou University, Wenzhou 325035, China.
ACS Nano. 2024 Oct 15;18(41):27833-27852. doi: 10.1021/acsnano.4c09247. Epub 2024 Oct 4.
The accumulation of nitrates in the environment causes serious health and environmental problems. The electrochemical nitrate reduction reaction (e-NORR) has received attention for its ability to convert nitrate to value-added ammonia with renewable energy. The key to effective catalytic efficiency is the choice of materials. Group VIII-based catalysts demonstrate great potential for application in e-NORR because of their high activity, low cost, and good electron transfer capability. This review summarizes the Group VIII catalysts, including monatomic, bimetallic, oxides, phosphides, and other composites. On this basis, strategies to enhance the intrinsic activity of the catalysts through coordination environment modulation, synergistic effects, defect engineering and hybridization are discussed. Meanwhile, the ammonia recovery process is summarized. Finally, the current research status in this field is prospected and summarized. This review aims to realize the large-scale application of nitrate electrocatalytic reduction in industrial wastewater.
环境中硝酸盐的积累会引发严重的健康和环境问题。电化学硝酸盐还原反应（e-NORR）因其能够利用可再生能源将硝酸盐转化为高附加值的氨而受到关注。有效催化效率的关键在于材料的选择。基于VIII族的催化剂因其高活性、低成本和良好的电子转移能力，在e-NORR中展现出巨大的应用潜力。本文综述了VIII族催化剂，包括单原子、双金属、氧化物、磷化物及其他复合材料。在此基础上，讨论了通过配位环境调控、协同效应、缺陷工程和杂化来提高催化剂本征活性的策略。同时，总结了氨的回收过程。最后，对该领域当前的研究现状进行了展望和总结。本文旨在实现硝酸盐电催化还原在工业废水中的大规模应用。
