Effects of precursor concentration on morphologies of Cu2O micro/nanocrystals and properties of CO self-sustained catalytic combustion

doi:10.1016/j.fuel.2020.119776

	Effects of precursor concentration on morphologies of Cu2O micro/nanocrystals and properties of CO self-sustained catalytic combustion
	Ma PD(马盼东)1,2; Teng, Zihao 1; Hao, Qinglan 1; Kang RN(康润宁)2,3 ; Li, Bei 1; Bin F(宾峰)2,3 ; Dou, Baojuan 1
通讯作者	Bin, Feng(binfeng@imech.ac.cn) ; Dou, Baojuan(bjdou@tust.edu.cn)
发表期刊	FUEL
	2021-04-01
卷号	289 页码:8
ISSN	0016-2361
摘要	The self-sustained catalytic combustion is one of the most effective ways to remove high concentration CO at low temperature. In this paper, Cu2O micro/nanocrystals with different morphologies were successfully synthesized by changing the precursor concentration using liquid phase reduction method. The obtained Cu2O were characterized using SEM, XRD, XPS, H-2-TPR and O-2-TPD, and the relationship between the catalytic performance and morphology was analyzed based on CO-TPD-MS and activity evaluation results. It was found that high precursor concentration leads to more exposure of active crystal planes of Cu2O. Compared with Cu2O-1 exposing only (100) crystal planes, Cu2O-5, the precursor concentration of which is 5 times of Cu2O-1, exposes (100) and (110) crystal planes. Cu2O-9, with 9 times of precursor concentration of Cu2O-1, exposes (100), (110) and (1 1 1) crystal planes simultaneously. All the obtained Cu2O with different precursor concentrations can achieve self-sustained CO catalytic combustion, and the catalytic activity increases with increasing precursor concentration (Cu2O-1 < Cu2O-5 < Cu2O-9). The results prove that unsaturated coordination of Cu and O on the (1 1 1) and (1 1 0) planes can enhance the corresponding reducibility, adsorption and activation of gaseous oxygen, consequently promoting the CO oxidation to CO2 over Cu2O-9.
关键词	Cu2O micro/nanocrystals Precursor concentration Morphology CO oxidation Self-sustained catalytic combustion
DOI	10.1016/j.fuel.2020.119776
收录类别	SCI ; EI
语种	英语
WOS记录号	WOS:000612056500008
关键词[WOS]	CARBON-MONOXIDE ; SCALE SYNTHESIS ; PERFORMANCE ; OXIDATION ; NANOCUBES ; ANODE
WOS研究方向	Energy & Fuels ; Engineering
WOS类目	Energy & Fuels ; Engineering, Chemical
资助项目	National Natural Science Foundation of China[51776216] ; Postdoctoral Science Foundation of China[2017M623284]
项目资助者	National Natural Science Foundation of China ; Postdoctoral Science Foundation of China
论文分区	一类
力学所作者排名	1
RpAuthor	Bin, Feng ; Dou, Baojuan
引用统计	被引频次：11[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://dspace.imech.ac.cn/handle/311007/86104
专题	高温气体动力学国家重点实验室
作者单位	1.Tianjin Univ Sci & Technol, Coll Marine & Environm Sci, Tianjin 300457, Peoples R China; 2.Chinese Acad Sci, Inst Mech, State Key Lab High Temp Gas Dynam, Beijing 100190, Peoples R China; 3.Univ Chinese Acad Sci, Sch Engn Sci, Beijing 100049, Peoples R China
推荐引用方式 GB/T 7714	Ma PD,Teng, Zihao,Hao, Qinglan,et al. Effects of precursor concentration on morphologies of Cu2O micro/nanocrystals and properties of CO self-sustained catalytic combustion[J]. FUEL,2021,289:8.
APA	马盼东.,Teng, Zihao.,Hao, Qinglan.,康润宁.,Li, Bei.,...&Dou, Baojuan.(2021).Effects of precursor concentration on morphologies of Cu2O micro/nanocrystals and properties of CO self-sustained catalytic combustion.FUEL,289,8.
MLA	马盼东,et al."Effects of precursor concentration on morphologies of Cu2O micro/nanocrystals and properties of CO self-sustained catalytic combustion".FUEL 289(2021):8.

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