Facile Synthesis of a Cu3Mo2O9 Nanosheet Array for Electrochemical Reduction of Nitrite to Ammonia in Neutral Solution

作者：Xia Li, Qiuyue Chen, Guoguo Wang, Xuguang An, Jing Zhang, Qian Liu, Lisi Xie, Xiaolei Li, Weitang Yao, Qingquan Kong · 发表于：ACS Applied Materials & Interfaces · 年份：2025 · DOI：10.1021/acsami.4c16179 · 被引用次数：5 · 研究领域：Ammonia Synthesis and Nitrogen Reduction、Advanced Photocatalysis Techniques、Nanomaterials for catalytic reactions

Electrochemical nitrite (NO 2 – ) is a promising technology for NO 2 – removal and a sustainable method for generating valuable ammonia (NH 3 ), but this process is intricate and generates other byproducts. In this work, we propose a facile and low-cost method for the preparation of a Cu 3 Mo 2 O 9 nanosheet array, which can serve as an efficient electrocatalyst for the reduction of NO 2 – to NH 3 . The morphology of Cu 3 Mo 2 O 9 can be adjusted by controlling the synthesis conditions. In neutral solution, Cu 3 Mo 2 O 9 achieves a high NH 3 yield of 30.46 mg h –1 cm –2 and an outstanding faradaic efficiency of 98.6% with excellent long-term electrochemical stability for NO 2 – reduction. Density functional theory calculations further reveal the key role of the Cu 3 Mo 2 O 9 (202) surface and its possible reaction pathways in the electrocatalytic reduction of nitrite.