Controllable synthesis and luminescent properties of LaVO4:Eu nanocrystals

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	Controllable synthesis and luminescent properties of LaVO4:Eu nanocrystals
	Wang, LP ; Chen, LM
刊名	MATERIALS CHARACTERIZATION
	2012
卷号	69 页码:108
关键词	SELECTIVE SYNTHESIS MONAZITE-TYPE HYDROTHERMAL SYNTHESIS ORTHOVANADATE GROWTH NANOWIRES NANOTUBES CRYSTALS OXIDES
ISSN号	1044-5803
通讯作者	Chen, LM: Cent S Univ, Coll Chem & Chem Engn, Changsha 410083, Hunan, Peoples R China.
中文摘要	Pure monoclinic and tetragonal LaVO4:Eu nanocrystals with various morphologies were successfully synthesized by a hydrothermal method in the presence of ethylenediaminetetraacetic acid [EDTA or H4L, where L4- = (CH2COO)(2) N (CH2)(2) N(CH2COO)(2)(4-)]. It was found that tuning the pH of the growth solution was a crucial step for the synthesis of LaVO4:Eu nanocrystals with controllable crystal structure and morphology. When the pH value was lower than 2.5, urchin-like monoclinic LaVO4:Eu nanostructures were obtained. Increasing the pH value can induce the phase transformation from monazite to zircon type accompanied with the morphology transformation: urchin-like -> bundle -> nanorod/nanowire. In addition, the concentration of EDTA also played an important role in determining the aspect ratio of tetragonal LaVO4:Eu nanorods. The possible mechanism responsible for the phase control and morphology evolution of the LaVO4:Eu nanocrystals was discussed. Their luminescent properties were systematically studied. It demonstrated that the phase transformation from monazite to zircon type and the increase in the aspect ratio of LaVO4:Eu nanorods resulted in a remarkable improvement of the luminescent properties. (C) 2012 Elsevier Inc. All rights reserved.
收录类别	SCI
资助信息	National Natural Science Foundation of China [21101172]
语种	英语
公开日期	2013-09-17
内容类型	期刊论文
源URL	[http://ir.iphy.ac.cn/handle/311004/35121]
专题	物理研究所_物理所公开发表论文_物理所公开发表论文_期刊论文
推荐引用方式 GB/T 7714	Wang, LP,Chen, LM. Controllable synthesis and luminescent properties of LaVO4:Eu nanocrystals[J]. MATERIALS CHARACTERIZATION,2012,69:108.
APA	Wang, LP,&Chen, LM.(2012).Controllable synthesis and luminescent properties of LaVO4:Eu nanocrystals.MATERIALS CHARACTERIZATION,69,108.
MLA	Wang, LP,et al."Controllable synthesis and luminescent properties of LaVO4:Eu nanocrystals".MATERIALS CHARACTERIZATION 69(2012):108.