无机材料学报2026，Vol.41Issue(5)：628-636,中插7-中插10,13.DOI:10.15541/jim20250321
CuNi双金属MOFs串联催化促进硝酸盐还原合成氨
Tandem Catalysis of CuNi Bimetallic MOFs Boosting Nitrate Reduction for Ammonia Production
摘要
Abstract
Electrocatalytic nitrate reduction reaction(NO3RR),as a green technology for producing ammonia and purifying wastewater,faces challenges in terms of nitrite intermediate accumulation and competitive hydrogen evolution reactions.Tandem catalytic strategy(NO3-→NO2-→NH3)is expected to significantly improve the rate and selectivity of ammonia production.Therefore,designing and constructing dual active sites with different catalytic properties contributes to improving reaction activity.Herein,a CuNi bimetallic metal organic framework(MOF)tandem catalytic system using well-defined MOFs as templates was constructed through simple hydrothermal synthesis.The research results indicated that Cu active sites could efficiently catalyze the reduction of NO3-to NO2-,while Ni sites exhibited excellent active hydrogen species *H supply capacity and NO2-conversion efficiency,forming an efficient tandem catalytic mechanism with Cu sites,and achieving a Faraday efficiency of up to 90.1%for ammonia synthesis and an ammonia yield of 28.8 mg·h-1·mgcat-1.In addition,the bimetallic MOFs catalyst showed excellent cycling stability without any degradation in ammonia synthesis after multiple cycling tests.This work provides new insights for the design and optimization of high-performance tandem catalysts.关键词
合成氨/硝酸盐还原反应/双金属/金属有机框架/串联催化Key words
ammonia production/nitrate reduction reaction/bimetallic/metal organic framework/tandem catalysis分类
化学化工引用本文复制引用
王萌,曹磊磊,苟王燕,程娅伊,战琪,原孟磊..CuNi双金属MOFs串联催化促进硝酸盐还原合成氨[J].无机材料学报,2026,41(5):628-636,中插7-中插10,13.基金项目
国家自然科学基金(22578364,52302310) （22578364,52302310）
陕西省自然科学基础研究计划项目(2025JC-YBQN-150,2025JC-YBMS-136) （2025JC-YBQN-150,2025JC-YBMS-136）
陕西省教育厅专项科研计划项目(24JK0496)National Natural Science Foundation of China(22578364,52302310) （24JK0496）
Shaanxi Province Natural Science Basic Research Program(2025JC-YBQN-150,2025JC-YBMS-136) （2025JC-YBQN-150,2025JC-YBMS-136）
Scientific Research Program of Shaanxi Provincial Department of Education(24JK0496) （24JK0496）
