铜业工程Issue(3)：104-112,9.DOI:10.3969/j.issn.1009-3842.2026.03.012
蜂窝状AlCuZn的制备及其电催化CO2和NO3-共还原产尿素研究
Fabrication of Honeycomb-structured AlCuZn and the Application in Electrocatalytic Co-reduction of CO2 and NO3-for Urea Synthesis
摘要
Abstract
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.关键词
AlCuZn催化剂/电催化/尿素合成/C-N偶联/选择性Key words
AlCuZn catalyst/electrocatalysis/urea synthesis/C-N coupling/selectivity分类
资源环境引用本文复制引用
成林玉,刘欣,刘易,杨洋,张洁,鲁童宇,阚艳东,包先明,孟苏刚..蜂窝状AlCuZn的制备及其电催化CO2和NO3-共还原产尿素研究[J].铜业工程,2026,(3):104-112,9.基金项目
有机废水污染深度处理新技术开发与应用(2024340603000314) （2024340603000314）
安徽省学科(专业)带头人资助计划(DTR2025015) （专业）
绿色和精准合成化学及应用教育部重点实验室自主(开放)课题(KLGPSCA202502) （开放）
