Importance of Ambient O-2 for Electrochemical Enrichment of Atmospheric CO2

doi:10.1021/ie302991y

CORC > 重庆绿色智能技术研究院 > 中国科学院重庆绿色智能技术研究院 > 水污染过程与治理研究中心

	Importance of Ambient O-2 for Electrochemical Enrichment of Atmospheric CO2
	Wang, Chuan 1; Liu, Hong1 ; Li, Xiangzhong 2; Zheng, Linze 3
刊名	INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
	2013-02-20
卷号	52 期号:7 页码:2470-2476
ISSN号	0888-5885
DOI	10.1021/ie302991y
通讯作者	Liu, H (reprint author), Chinese Acad Sci, Chongqing Inst Green & Intelligent Technol, Chongqing 401122, Peoples R China.
英文摘要	Enrichment is a prerequisite for CO2 reduction from air and demands mild conditions for energy saving. Electrochemically generated OH- and H+ can be employed for atmosphere CO2 enrichment (capture and recovery) under ambient condition. This study demonstrated the importance of the coexisting ambient O-2 in the electrochemical OH-/H+ generation. Our system showed that CO2 in air could be captured simultaneously with the OH-/H+ generation. Meanwhile, O-2 in air served to start up such generation from a cell voltage of 1.3 V, significantly lower than 2.2 V without O-2. Simple modeling and experiments of OH-/H+ generation evidenced that ambient O-2 elevated the effectiveness of OH-/H+ generation by lifting the energy efficiency in a galvanostatic mode, and accelerating the generation rate in a potentiostatic mode. Meanwhile, the effectiveness elevation was attributed to an improvement of the intrinsic properties of electrode reactions for OH-/H+ generation. Rather, beyond the cell voltage of 4.9 V, no difference was observed in the effectiveness regardless of the presence of ambient O-2. This study would be helpful for designing an effective electrochemical process of atmospheric CO2 enrichment by utilizing ambient O-2 that undergoes an electrode process without consumption.
资助项目	Natural Science Foundation of China[50978260] ; Natural Science Foundation of China[21077136] ; Natural Science Foundation of China[51208539] ; Chongqing Science & Technology Commission[CSTC2ZR11HD030]
WOS研究方向	Engineering
语种	英语
出版者	AMER CHEMICAL SOC
WOS记录号	WOS:000315326100003
内容类型	期刊论文
源URL	[http://119.78.100.138/handle/2HOD01W0/359]
专题	水污染过程与治理研究中心
通讯作者	Liu, Hong
作者单位	1.Chinese Acad Sci, Chongqing Inst Green & Intelligent Technol, Chongqing 401122, Peoples R China 2.Hong Kong Polytech Univ, Dept Civil & Struct Engn, Hong Kong, Hong Kong, Peoples R China 3.Guangdong Univ Technol, Sch Chem Engn & Light Ind, Guangzhou 510006, Guangdong, Peoples R China
推荐引用方式 GB/T 7714	Wang, Chuan,Liu, Hong,Li, Xiangzhong,et al. Importance of Ambient O-2 for Electrochemical Enrichment of Atmospheric CO2[J]. INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH,2013,52(7):2470-2476.
APA	Wang, Chuan,Liu, Hong,Li, Xiangzhong,&Zheng, Linze.(2013).Importance of Ambient O-2 for Electrochemical Enrichment of Atmospheric CO2.INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH,52(7),2470-2476.
MLA	Wang, Chuan,et al."Importance of Ambient O-2 for Electrochemical Enrichment of Atmospheric CO2".INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH 52.7(2013):2470-2476.