Authors: Yanjie Su Hao Wei Zhi Yang Liangming Wei Eric SiuWai Kong Yafei Zhang
Publish Date: 2011/01/28
Volume: 13, Issue: 8, Pages: 3229-3233
Abstract
Magnesium oxide MgO nanowires have been synthesized by DC arc discharge without using metal catalysts These MgO nanowires are singlecrystalline with an axes along the 100 direction The cross sectional diameter of the nanowires spans the range of 5–150 nm with the length up to hundreds of micrometers The growth of MgO nanowires can be considered as a vaporphase chemical reaction process in which both defects and oxygen partial pressure play important roles The photoluminescence PL measurement reveals two emission bands centered at 437 and 496 nm which can be ascribed to various structural defects and nanosize effect of MgO nanowires This efficient synthesis method has the potential for largescale preparation of metal oxide nanostructures using metals with low meltingpoints as the raw materialsThis study was supported by the National Natural Science Foundation of China no 61006002 50730008 and 50902092 ShanghaiApplied Materials Collaborative Research Program no 09520714400 and Shanghai Science and Technology Grant no 09JC1407400 and 1052nm02000
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