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铜纤维毡的模板-热还原法制备及二氧化碳电还原性能

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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CuCl2-2H2O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5 μm,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CO2电化学还原性能.相对于泡沫铜,铜纤维毡作为CO2电还原反应的催化剂,展现了对甲酸生成较高的选择性.
Template-thermal Reduction Preparation of Copper Fiber Felt and Its Carbon Dioxide Electroreduction Performance
Taking three carbon materials as the template,copper fiber felt was prepared with template-thermal reduction method by optimizing the ratio of CuCl2-2H2O/template in the precursor to study the effect of artifi-cial 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.5 μm and submicron-scale steps were dis-played on copper fiber.Copper fiber felt was constructed into self-supported electrode,and its CO2 electro-chemical 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 CO2 electroreduction reaction,showed higher selectivity for formic acid formation.

Copper fiber felttemplate-thermal reductiongraphenecarbon dioxide electroreduction per-formance

张璐、沈子千、王若珊、宋苗、兰帅、申偲伯

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河北科技师范学院化学工程学院河北省天然产物活性成分与功能重点实验室,河北秦皇岛,066600

铜纤维毡 模板-热还原法 石墨烯 二氧化碳电还原性能

河北省自然科学基金项目河北省研究生创新资助项目国家自然科学基金项目

E2021407001CXZZSS202315651802221

2024

河北科技师范学院学报
河北科技师范学院

河北科技师范学院学报

影响因子:0.414
ISSN:1672-7983
年,卷(期):2024.38(2)