摘要
在电化学还原硝酸盐中,本文创新性地使用了可移动的氧化铜碳材料作为颗粒电极。使用商用的铜碳材料作为前驱体,经煅烧获得氧化铜碳粉末。通过XRD,SEM-EDS-Mapping,TEM和XPS等测试方法研究了粉末催化剂的晶相结构、形貌和表面电子状态。与传统的固相电极相比,铜碳粉末电极对硝酸盐的还原速率明显加快,这可能是因为可移动的电极促进了硝酸盐的传质,并且提供了更多的反应活性位点。铜碳颗粒电极经煅烧后,硝酸盐的电还原性能进一步提高。条件实验结果表明,更多的颗粒催化剂,更大的反应电流,更高的溶液pH有利于硝酸盐的电还原。此外,更高浓度的氨氮溶液会促进南瓜幼苗的生长。
In the electrochemical reduction of nitrate,a mobile copper oxide carbon material was innovatively used as a particle electrode.Using commercial copper-carbon material as precursor,copper oxide/carbon powder was obtained by calcination.The crystal structure,morphology and surface electronic state of the powder catalyst were studied by XRD,SEM-EDS-Mapping,TEM and XPS.Compared with traditional solid phase electrodes,the reduction rate of nitrate was significantly accelerated by the copper carbon powder electrode,possibly because the mobile electrode promoted the mass transfer of nitrate and provided more reactive sites.After calcination of copper carbon particle electrode,the electric reduction performance of nitrate was further improved.The experimental results showed that more particle catalysts,greater reaction current and higher solution pH were beneficial to the electric reduction of nitrate.In addition,higher levels of ammonia nitrogen solution promoted the growth of pumpkin seedlings.
作者
左翊玲
朱文燕
储家越
刘培彬
张洋
薛宇宙
ZUO Yiling;ZHU Wenyan;CHU Jiayue;LIU Peibin;ZHANG Yang;XUE Yuzhou(School of Environment and Surveying Engineering,Suzhou University,Anhui Suzhou 234000;Suzhou Aioutput E-commerce Co.,Ltd.,Anhui Suzhou 234000;Qingdao Wasai Environmental Technology Co.,Ltd.,Shandong Qingdao 266000,China)
出处
《广州化工》
2026年第1期73-77,共5页
GuangZhou Chemical Industry
基金
安徽省大学生创新创业计划项目(S202410379047)
企(事)业单位委托项目(2024xhx050)
宿州学院博士科研启动基金项目(2021BSK042)。
关键词
氧化铜碳
颗粒电极
硝酸盐还原
氨合成
CuO/C
particle electrode
nitrate reduction
ammonia synthesis
