Cu/Cu    x    O/Graphdiyne Tandem Catalyst for Efficient Electrocatalytic Nitrate Reduction to Ammonia

Feng, Xueting; Liu, Jiyuan; Kong, Ya; Zhang, Zixuan; Zhang, Zedong; Li, Shuzhou; Tong, Lianming; Gao, Xin; Zhang, Jin

doi:10.1002/adma.202405660

articleAdvanced MaterialsJun 17, 2024BRONZE OA

Cu/Cu x O/Graphdiyne Tandem Catalyst for Efficient Electrocatalytic Nitrate Reduction to Ammonia

XFXueting Feng JLJiyuan Liu YKYa Kong ZZZixuan Zhang ZZZedong Zhang

Peking University · Beijing National Laboratory for Molecular Sciences · +2 more institutions

PubMed

Indexed incrossrefpubmed

Abstract

Abstract The electrocatalytic reduction reaction of nitrate (NO 3 − ) to ammonia (NH 3 ) is a feasible way to achieve artificial nitrogen cycle. However, the low yield rate and poor selectivity toward NH 3 product is a technical challenge. Here a graphdiyne (GDY)‐based tandem catalyst featuring Cu/Cu x O nanoparticles anchored to GDY support (termed Cu/Cu x O/GDY) for efficient electrocatalytic NO 3 − reduction is presented. A high NH 3 yield rate of 25.4 mg h −1 mg cat. −1 (25.4 mg h −1 cm −2 ) with a Faradaic efficiency of 99.8% at an applied potential of −0.8 V versus RHE using the designed catalyst is achieved. These performance metrics outperform most reported NO 3 − to NH 3 catalysts in the alkaline…

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Topics & keywords

Topics

Keywords

Ammonia
Nitrate
Catalysis
Materials science
Tandem
Inorganic chemistry
Electrocatalyst
Reduction (mathematics)

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