摘要
为了研究人工碳纳米材料模板对铜纤维毡制备及结构的影响,应用模板-热还原法,以3种碳材料为模板,通过优化前驱体中CuCl_(2)·2H_(2)O与模板的质量比尝试制备铜纤维毡。使用X射线衍射仪、扫描电子显微镜和能量色散谱仪分析了试样的结构和化学组成。结果表明,石墨烯可发挥模板作用,得到橙红色厘米级铜纤维毡,铜纤维毡中铜纤维的直径约5μm,且铜纤维表面分布亚微米级台阶。将铜纤维毡制成自支撑电极,应用在线气相色谱仪和核磁共振波谱仪评价了铜纤维毡的CO_(2)电化学还原性能。相对于泡沫铜,铜纤维毡作为CO_(2)电还原反应的催化剂,展现了对甲酸生成较高的选择性。
Taking three carbon materials as the template,copper fiber felt was prepared with template-thermal reduction method by optimizing the ratio of CuCl_(2)-2H_(2)O/template in the precursor to study the effect of artificial carbon nanomaterial templates on the preparation and structure of copper fiber felt.The structure and chemical composition of copper fiber felt were analyzed with XRD,SEM and EDS.The results showed that graphene could exert template function,benefiting to the preparation of reddish orange centimeter-scale copper fiber felt.The diameter of copper fiber in copper fiber felt was ca.5μm and submicron-scale steps were displayed on copper fiber.Copper fiber felt was constructed into self-supported electrode,and its CO_(2) electrochemical reduction performance was evaluated by on-line gas chromatograph and nuclear magnetic resonance spectrometer.Compared to copper foam counterpart,copper fiber felt,as a catalyst for CO_(2) electroreduction reaction,showed higher selectivity for formic acid formation.
作者
张璐
沈子千
王若珊
宋苗
兰帅
申偲伯
ZHANG Lu;SHEN Ziqian;WANG Ruoshan;SONG Miao;LAN Shuai;SHEN Sibo(Hebei Key Laboratory of Active Components and Functions in Natural Products,College of Chemical Engineering,Hebei Normal University of Science&Technology,Qinhuangdao Hebei,066600,China)
出处
《河北科技师范学院学报》
CAS
2024年第2期66-72,共7页
Journal of Hebei Normal University of Science & Technology
基金
河北省自然科学基金项目(项目编号:E2021407001)
河北省研究生创新资助项目(项目编号:CXZZSS2023156)
国家自然科学基金项目(项目编号:51802221)。
关键词
铜纤维毡
模板-热还原法
石墨烯
二氧化碳电还原性能
Copper fiber felt
template-thermal reduction
graphene
carbon dioxide electroreduction performance
