原子层沉积铜修饰MXene在电催化硝酸盐还原制氨及锌-硝酸盐电池中的应用OA
Application of atomic layer deposition of copper-modified MXene in electrocatalytic nitrate reduction to ammonia and zinc-nitrate batteries
氨(NH3)作为重要的化工原料,工业上主要采用高能耗、高碳排放的哈伯-博施法进行生产.硝酸盐是一种广泛存在的水体污染物,电催化硝酸盐还原制氨不仅可以降低氨生产过程中的碳排放,还可以实现含氮废水的资源化利用.为优化电催化硝酸盐还原制氨工艺,采用原子层沉积(atomic layer deposition,ALD)技术,在单层MXene片上沉积不同厚度的铜(Cu)层,制备Cu-MXene催化剂.结果表明,Cu-MXene催化剂展现出卓越的催化性能,催化体系中氨的产率高达11.1 mol·gcat.-1·h-1,法拉第效率达91.5％.进一步将其应用于锌-硝酸盐(Zn-NO3-)电池组装,开路电压达1.73 V,峰值功率密度达5.5 mW·cm-2.在2 mA·cm-2的电流密度下,该锌-硝酸盐电池实现了 78 h的稳定循环运行.
Ammonia(NH3)is an important chemical raw material,but its industrial production mainly relies on the Haber-Bosch process,which has high energy consumption and high carbon emissions.Nitrate is a widely existing water pollutant.Electrocatalytic nitrate reduction to ammonia can not only reduce carbon emissions in ammonia production but also realize the resource utilization of nitrogen-containing wastewater.To optimize electrocatalytic nitrate reduction to ammonia,atomic layer deposition(ALD)technology was used to deposit copper(Cu)layers of different thicknesses on monolayer MXene sheets to prepare Cu-MXene catalysts.The results showed that the Cu-MXene catalyst exhibited excellent catalytic performance,with an ammonia yield of 11.1 mol·gcat.-1·h-1,a Faradaic efficiency of 91.5％.Further application in the assembly of a zinc-nitrate battery gave an open-circuit voltage(OCV)of 1.73 V and a peak power density of 5.5 mW·cm-2.At a current density of 2 mA·cm-2,the zinc-nitrate battery achieved stable cycling operation for 78 hours.
邹俊容;吴凡;魁斌;高鹏;叶伟
杭州师范大学材料与化学化工学院有机硅化学及材料教育部重点实验室,浙江杭州杭州师范大学材料与化学化工学院有机硅化学及材料教育部重点实验室,浙江杭州杭州师范大学材料与化学化工学院有机硅化学及材料教育部重点实验室,浙江杭州杭州师范大学材料与化学化工学院有机硅化学及材料教育部重点实验室,浙江杭州杭州师范大学材料与化学化工学院有机硅化学及材料教育部重点实验室,浙江杭州
医药卫生
原子层沉积单层MXene镀铜硝酸盐还原锌-硝酸盐电池
atomic layer depositionmonolayer MXenecopper coatingnitrate reductionzinc-nitrate battery
《杭州师范大学学报（自然科学版）》 2026 (4)
343-350,359,9
国家自然科学基金青年科学基金项目(51902077)
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