DataVXAdvanced MaterialsPaper
journal article·2025-07

Synthesis of Ultrathin Mesoporous CuxRu Nanomeshes for Efficient Kilowatt‐Level Nitrate Reduction to Ammonia

Haitao Xu, Ali Han, Yang Yang, Hongfei Wu, Hao Zhang, Canglang Yao, Yunfei Bu, Zhengping Fu, Yalin Lu, Gang Liu, Jong‐Beom Baek, Feng Li, Dongyuan Zhao

Advanced Materials· Volume 37· Issue 30
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Source abstract

Abstract

Abstract The electrochemical conversion of abundant nitrate ions from industrial wastewater and polluted groundwater into value‐added ammonia represents an important route for the sustainable development of human society. However, developing efficient and stable catalysts remains a huge challenge. Herein, the synthesis of ultrathin mesoporous CuxRu nanomeshes is reported via a theory‐guided ion exchange method for efficient nitrate reduction to ammonia. The prepared CuxRu nanomeshes are composed of Cu atoms anchored ultrathin mesoporous Ru nanomeshes, with a thickness of ≈2–3 nm and a pore distribution between 2 and 10 nm. It offers a high nitrate reduction performance, including a positive onset potential (0.41 V), a high ammonia Faradaic efficiency (94.5%) and a highest ammonia mass activity (0.7 A mg−1) at 0 V up to date. Moreover, a kilowatt‐level nitrate reduction is first verified in a flow electrolyzer, with the fastest reported NO3− removal velocity of 12.4 mmol min−1. In situ characterizations and theoretical calculations clearly reveal that Cu atoms can balance the energy barriers in nitrate reduction and competitive hydrogen evolution reactions, leading to improved catalytic performance.
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Research context

NanomaterialsCatalysis & surfaces

OpenAlex topics: Ammonia Synthesis and Nitrogen Reduction · Advanced Photocatalysis Techniques · Nanomaterials for catalytic reactions

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

Affiliations

Laboratory of Advanced Materials Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials Fudan University 220 Handan Shanghai 200433 P. R. China

Shaanxi Key Laboratory of Catalysis School of Chemical & Environment Sciences Shaanxi University of Technology Hanzhong 723001 P. R. China

Shenyang National Laboratory for Materials Science Institute of Metal Research Chinese Academy of Sciences 72 Wenhua Road Shenyang 110016 P. R. China

UNIST‐NUIST Environment and Energy Jointed Lab (UNNU) Nanjing University of Information Science and Technology (NUIST) Nanjing 210044 P. R. China

Anhui Laboratory of Advanced Photon Science and Technology University of Science and Technology of China 96 Jinzhai Hefei Anhui 230026 P. R. China

School of Energy and Chemical Engineering/Center for Dimension‐Controllable Organic Frameworks Ulsan National Institute of Science and Technology (UNIST) 50 UNIST Ulsan 44919 South Korea

Funding

Fudan University · National Natural Science Foundation of China · National Research Foundation of Korea

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