In-situ grown CuO_(x)nanowire forest on copper foam:A 3D hierarchical and freestanding electrocatalyst with enhanced carbonaceous product selectivity in CO_(2)reduction
作者机构：MOE Key Laboratory of Mesoscopic ChemistryMOE Key Laboratory of High Performance Polymer Materials and TechnologyJiangsu Key Laboratory of Advanced Organic MaterialsSchool of Chemistry and Chemical EngineeringNanjing UniversityNanjing 210023China Jiangsu Co-Innovation Center of Efficient Processing and Utilization of Forest ResourcesInternational Innovation Center for Forest Chemicals and MaterialsCollege of Chemical EngineeringNanjing Forestry UniversityNanjing 210037China Nanjing Tieming Energy Technology Co.Ltd.Nanjing 210093China Suzhou Tierui New Energy Technology Co.Ltd.Suzhou 215228China School for Engineering of MatterTransportand EnergyArizona State University501 East Tyler MallTempeAZ 85287USA
出 版 物：《Nano Research Energy》 (纳米能源研究（英文）)
年 卷 期：2022年第1卷第3期
页 面：44-51页
学科分类：08[工学] 0805[工学-材料科学与工程（可授工学、理学学位）] 080502[工学-材料学]
基 金：grateful to the supports from the National Key R&D Program of China(No.2017YFA0208200) the National Natural Science Foundation of China(Nos.22022505,21872069) the Fundamental Research Funds for the Central Universities(Nos.020514380266,020514380272,020514380274) the Scientific and Technological Innovation Special Fund for Carbon Peak and Carbon Neutrality of Jiangsu Province(No.BK20220008) the Nanjing International Collaboration Research Program(Nos.202201007,2022SX00000955) the Suzhou Gusu Leading Talent Program of Science and Technology Innovation and Entrepreneurship in Wujiang District(No.ZXL2021273)
主 题：electrocatalytic CO_(2)reduction CuO_(x)nanowire forest 3D hierarchical nanostructure surface reconstruction enhanced carbonaceous product selectivity
摘 要：Electrocatalytic carbon dioxide(CO_(2))reduction is considered as an economical and environmentally friendly approach to neutralizing and recycling greenhouse gas CO_(2).However,the design of preeminent and robust electrocatalysts for CO_(2)electroreduction is still ***,we report the in-situ growth of dense CuO_(x)nanowire forest on 3D porous Cu foam(CuO_(x)-NWF@Cu-F),which can be directly applied as a freestanding and binder-free working electrode for highly effective electrocatalytic CO_(2)*** adjusting the surface morphology and chemical composition of CuO_(x)nanowires via surface reconstruction,large electrochemically active surface area and abundant Cu(+1)sites were generated,leading to remarkable activity for CO_(2)*** as-prepared hierarchical conductive electrode exhibited an enhanced Faradaic efficiency of 15.0%for ethanol formation(FE_(C_(2)H_(5)OH))and a total Faradaic efficiency of 69.4%for all carbonaceous compounds(FE_(C-total))at a mild applied potential of–0.45 V *** in 0.1 M KHCO_(3)*** achieved a 4-fold increase in FE_(C-total)than that of Cu nanowire forest supported on 3D porous Cu foam(Cu-NWF@Cu-F)obtained by in-situ reduction of the CuO_(x)-NWF@Cu-F via annealing at H_(2)atmosphere,and thereby effectively suppressed the hydrogen evolution side-reaction.
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