Preparation of ZnO colloids by aggregation of the nanocrystal subunits

	Preparation of ZnO colloids by aggregation of the nanocrystal subunits
其他题名	论文其他题名
	Dong L.; Liu Y. C.; Tong Y. H.; Xiao Z. Y.; Zhang J. Y.; Lu Y. M.; Shen D. Z.; Fan X. W.
	2005
发表期刊	Journal of Colloid and Interface Science
ISSN	0021-9797
卷号	283 期号:2 页码:380-384
摘要	Colloidal ZnO particles with narrow size distribution were prepared via a sot-gel process by base-catalyzed hydrolysis of zinc acetate. The morphology of ordered arrays of the particles was recorded by SEM. SEM also reveals that these uniform particles were composed of tiny ZnO subunits (singlets) sized of several nanometers. The size of the singlets, which is confirmed by X-ray diffraction and UV-vis absorption spectra, increases as the aging time is prolonged. The size-selective formation of colloids by aggregation of nanosized subunits is proposed to consist of two-stage growth by nucleation of nanosized crystalline primary particles and their subsequent aggregation into polycrystalline, secondary colloids. The aggregates are all spherical because the internal rearrangement processes are fast enough. The ZnO colloids, i.e., the aggregates. tend to self-assemble into well-ordered hexagonal close-packed structures. Room-temperature photoluminescence was characterized for green and aged ZnO. (C) 2004 Published by Elsevier Inc.
收录类别	SCI
语种	英语
文献类型	期刊论文
条目标识符	http://ir.ciomp.ac.cn/handle/181722/25019
专题	中科院长春光机所知识产出
推荐引用方式 GB/T 7714	Dong L.,Liu Y. C.,Tong Y. H.,et al. Preparation of ZnO colloids by aggregation of the nanocrystal subunits[J]. Journal of Colloid and Interface Science,2005,283(2):380-384.
APA	Dong L..,Liu Y. C..,Tong Y. H..,Xiao Z. Y..,Zhang J. Y..,...&Fan X. W..(2005).Preparation of ZnO colloids by aggregation of the nanocrystal subunits.Journal of Colloid and Interface Science,283(2),380-384.
MLA	Dong L.,et al."Preparation of ZnO colloids by aggregation of the nanocrystal subunits".Journal of Colloid and Interface Science 283.2(2005):380-384.

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