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.