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	Catalyst-Free Growth of Quasi-Aligned Nanorods of Single Crystal Cu3Mo2O9 and Their Catalytic Properties
	Chu, W. G. ; Wang, H. F. ; Guo, Y. J. ; Zhang, L. N. ; Han, Z. H. ; Li, Q. Q. ; Fan, S. S.
	2010-10-12 ; 2010-10-12
关键词	CUO NANOWIRES MOLYBDENUM TRIOXIDE THERMAL-OXIDATION SOOT COMBUSTION OXIDES TEMPERATURE NANOBELTS COPPER AL2O3 FILMS Chemistry, Inorganic & Nuclear
中文摘要	We propose a simple and catalyst-free method to grow quasi-aligned single crystalline Cu3Mo2O9 nanorods in terms of a mechanism differing from the conventional vapor-solid (VS) and vapor-liquid-solid (VLS) ones for chemical vapor deposition (CVD) methods by directly heating Cu foils in a mixed atmosphere of MoO3 vapor and air. High quality Cu3Mo2O9 nanorods can be simply grown in a temperature range from 450 to 550 degrees C whose diameter, length, and distribution density are dependent on both heating temperature and time. Interestingly, the growth rate at 550 degrees C drops significantly after 6 h. All nanorods grow along the [010] direction. On the basis of a proposed growth model, the nucleation of Cu3Mo2O9 nanorods is believed to be governed by formation of initial polycrystalline CuxO protuberances with nanoscale diameters on Cu foils which may act as growth "templates". This novel method can be applied to grow other similar tertiary transition metal oxide nanostructures on substrates with large sizes. Most importantly, these Cu3Mo2O9 nanorods decrease the ignition temperature of Printex U model soot from 600 to 438 degrees C, being in between 200 and 450 degrees C of the exhaust of diesel-powered combustion engines, which are therefore expected to be a potential efficient and environmentally friendly catalyst for diesel exhaust combustion.
语种	英语 ; 英语
出版者	AMER CHEMICAL SOC ; WASHINGTON ; 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
内容类型	期刊论文
源URL	[http://hdl.handle.net/123456789/80769]
专题	清华大学
推荐引用方式 GB/T 7714	Chu, W. G.,Wang, H. F.,Guo, Y. J.,et al. Catalyst-Free Growth of Quasi-Aligned Nanorods of Single Crystal Cu3Mo2O9 and Their Catalytic Properties[J],2010, 2010.
APA	Chu, W. G..,Wang, H. F..,Guo, Y. J..,Zhang, L. N..,Han, Z. H..,...&Fan, S. S..(2010).Catalyst-Free Growth of Quasi-Aligned Nanorods of Single Crystal Cu3Mo2O9 and Their Catalytic Properties..
MLA	Chu, W. G.,et al."Catalyst-Free Growth of Quasi-Aligned Nanorods of Single Crystal Cu3Mo2O9 and Their Catalytic Properties".(2010).

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