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Fabrication of Honeycomb-structured AlCuZn and the Application in Electrocatalytic Co-reduction of CO2 and NO3− for Urea Synthesis
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Linyu Cheng1, 2, Xin Liu1, 2, Yi Liu1, 2, Yang Yang1, 2, Jie Zhang1, 2, Tongyu Lu1, 2, Yandong Kan1, Xianming Bao1, 2, Sugang Meng1
Copper Engineering | 2026, (3) : 104 - 112
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Copper Engineering | 2026, (3): 104-112
• Material Preparation and Process Engineering •
Fabrication of Honeycomb-structured AlCuZn and the Application in Electrocatalytic Co-reduction of CO2 and NO3− for Urea Synthesis
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Linyu Cheng1, 2, Xin Liu1, 2, Yi Liu1, 2, Yang Yang1, 2, Jie Zhang1, 2, Tongyu Lu1, 2, Yandong Kan1, Xianming Bao1, 2, Sugang Meng1
Affiliations
  • 1.Key Laboratory of Green and Precise Synthetic Chemistry and Applications，Ministry of Education，Huaibei normal university，Huaibei 235000，China
  • 2.School of Life Sciences，Huaibei normal university，Huaibei 235000，China
Published: 2026-06-28 doi: 10.3969/j.issn.1009-3842.2026.03.012
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Under the global carbon neutrality initiative, the advancement of efficient and low-energy urea synthesis technologies holds crucial importance for sustainable development in agriculture and industry. Electrocatalytic technology enables direct co-reduction of CO2 and NO3– for urea synthesis under ambient conditions, emerging as a highly promising strategy that has garnered significant research interest. Nevertheless, current electrocatalytic systems are constrained by low mass transfer efficiency, insufficient catalytic activity, and poor stability, posing substantial challenges for developing high-performance electrocatalysts. In this study, a honeycomb-like porous AlCuZn alloy catalyst was successfully fabricated through a facile alkali etching approach. At ambient conditions, the optimized AlCuZn-0.5 catalyst demonstrated a remarkable urea Faradaic efficiency of 65.7% at –0.3 V (vs. RHE), representing 1.4-fold enhancement over pristine AlCuZn, with a corresponding yield of 152.4 μg/(h·mgcat) achieving 1.8-fold improvement. Electrochemical cycling tests and pre-/post-reaction X-ray diffraction (XRD) analyses confirmed catalyst's superior operational stability and structural integrity. The etched AlCuZn-0.5 manifests enhanced synergistic effects among Al-Cu-Zn components, which facilitated C-N coupling reactions and improved urea selectivity. Porous architecture of the material not only enhanced reactant mass transfer but also reduced charge transfer resistance while exposing abundant active sites, collectively boosting urea production rate. This work established a novel design paradigm of C-N coupling for efficient electrocatalysis of NO3– and CO2, positioning AlCuZn-0.5 as a prospective catalyst for sustainable urea synthesis.

AlCuZn catalyst  /  electrocatalysis  /  urea synthesis  /  C-N coupling  /  selectivity
Linyu Cheng, Xin Liu, Yi Liu, Yang Yang, Jie Zhang, Tongyu Lu, Yandong Kan, Xianming Bao, Sugang Meng. Fabrication of Honeycomb-structured AlCuZn and the Application in Electrocatalytic Co-reduction of CO2 and NO3− for Urea Synthesis[J]. Copper Engineering, 2026 , (3) : 104 -112 . DOI: 10.3969/j.issn.1009-3842.2026.03.012
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Article Info
doi: 10.3969/j.issn.1009-3842.2026.03.012
  • Receive Date：2025-10-01
  • Online Date：2026-09-08
  • Published：2026-06-28
Article Data
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History
  • Received：2025-10-01
  • Revised：2026-01-30
Funding
Affiliations
    1.Key Laboratory of Green and Precise Synthetic Chemistry and Applications，Ministry of Education，Huaibei normal university，Huaibei 235000，China
    2.School of Life Sciences，Huaibei normal university，Huaibei 235000，China
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https://castjournals.cast.org.cn/joweb/tygc/EN/10.3969/j.issn.1009-3842.2026.03.012
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表12种不同金属材料的力学参数
科
Family		 属数
Number of
genus		 种数
Number of
species		 占总种数比例
Percentage of
total species (%)		 属
Genus		 种数
Number of
species		 占总种数比例
Percentage of total
species (%)
鹅膏菌科Amanitaceae 2 11 5.26 鹅膏菌属 Amanita 10 4.78
小菇科 Mycenaceae 2 12 5.74 丝盖伞属 Inocybe 5 2.39
多孔菌科 Polyporaceae 8 14 6.70 蜡蘑属 Laccaria 5 2.39
红菇科 Russulaceae 3 23 11.00 小皮伞属 Marasmius 6 2.87
小菇属 Mycena 11 5.26
光柄菇属 Pluteus 5 2.39
红菇属 Russula 17 8.13
栓菌属 Trametes 5 2.39
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