AuCu Alloy Nanoparticle Embedded Cu Submicrocone Arrays for Selective Conversion of CO2 to Ethanol

doi:10.1002/smll.201902229

CORC > 兰州理工大学 > 兰州理工大学 > 省部共建有色金属先进加工与再利用国家重点实验室

	AuCu Alloy Nanoparticle Embedded Cu Submicrocone Arrays for Selective Conversion of CO2 to Ethanol
	Shen, Sibo 3,4,5; Peng, Xianyun 4,5; Song, Lida 4,5; Qiu, Yuan 4,5; Li, Chao 4,5; Zhuo, Longchao 2; He, Jia 4,5; Ren, Junqiang 1; Liu, Xijun 4,5; Luo, Jun 4,5
刊名	SMALL
	2019-07-24
卷号	15 期号:37
关键词	AuCu alloys CO2 reduction Cu submicrocone arrays ethanol
ISSN号	1613-6810
DOI	10.1002/smll.201902229
英文摘要	The CO2 reduction reaction (CO2RR) driven by renewable electricity represents a promising strategy toward alleviating the energy shortage and environmental crisis facing humankind. Cu species, as one type of versatile electrocatalyst for the CO2RR, attract tremendous research interest. However, for C-2 products, ethanol formation is commonly less favored over Cu electrocatalysts. Herein, AuCu alloy nanoparticle embedded Cu submicrocone arrays (AuCu/Cu-SCA) are constructed as an active, selective, and robust electrocatalyst for the CO2RR. Enhanced selectivity for EtOH is gained, whose Faradaic efficiency (FE) reaches 29 +/- 4%, while ethylene formation is relatively inhibited (16 +/- 4%) in KHCO3 aqueous solution. The ratio between partial current densities of EtOH and C2H4 (j(EtOH)/j(C2H4)) can be tuned in the range from 0.15 +/- 0.27 to 1.81 +/- 0.55 by varying the Au content of the electrocatalysts. The combined experimental and theoretical calculation results identify the importance of Au in modifying binding energies of key intermediates, such as CH2CHO, CH3CHO, and CH3CH2O*, which consequently modify the activity and selectivity (j(EtOH)/j(C2H4)) for the CO2RR. Moreover, AuCu/Cu-SCA also shows high durability with both the current density and FEEtOH being largely maintained for 24 h electrocatalysis.
资助项目	Tianjin Municipal Science and Technology Commission[15JCYBJC52600]
WOS研究方向	Chemistry ; Science & Technology - Other Topics ; Materials Science ; Physics
语种	英语
出版者	WILEY-V C H VERLAG GMBH
WOS记录号	WOS:000477142800001
状态	已发表
内容类型	期刊论文
源URL	[http://119.78.100.223/handle/2XXMBERH/31714]
专题	省部共建有色金属先进加工与再利用国家重点实验室
通讯作者	He, Jia; Liu, Xijun
作者单位	1.Lanzhou Univ Technol, State Key Lab Adv Proc & Recycling Nonferrous Met, Lanzhou 730050, Gansu, Peoples R China 2.Xian Univ Technol, Sch Mat Sci & Engn, Xian 710048, Shaanxi, Peoples R China 3.Hebei Normal Univ Sci & Technol, Hebei Key Lab Act Components & Funct Nat Prod Pla, Coll Chem Engn, Qinhuangdao 066600, Hebei, Peoples R China 4.Tianjin Univ Technol, Tianjin Key Lab Adv Funct Porous Mat, Sch Mat Sci & Engn, Inst New Energy Mat & Low Carbon Technol, Tianjin 300384, Peoples R China 5.Tianjin Univ Technol, Ctr Electron Microscopy, Sch Mat Sci & Engn, Tianjin 300384, Peoples R China
推荐引用方式 GB/T 7714	Shen, Sibo,Peng, Xianyun,Song, Lida,et al. AuCu Alloy Nanoparticle Embedded Cu Submicrocone Arrays for Selective Conversion of CO2 to Ethanol[J]. SMALL,2019,15(37).
APA	Shen, Sibo.,Peng, Xianyun.,Song, Lida.,Qiu, Yuan.,Li, Chao.,...&Luo, Jun.(2019).AuCu Alloy Nanoparticle Embedded Cu Submicrocone Arrays for Selective Conversion of CO2 to Ethanol.SMALL,15(37).
MLA	Shen, Sibo,et al."AuCu Alloy Nanoparticle Embedded Cu Submicrocone Arrays for Selective Conversion of CO2 to Ethanol".SMALL 15.37(2019).