Controllable Preparation of Hierarchical ZnO Nanocages and its Oxygen Vacancy through the Nanoscale Kirkendall Process

	Controllable Preparation of Hierarchical ZnO Nanocages and its Oxygen Vacancy through the Nanoscale Kirkendall Process
	Fan, Haosen 1; Zheng, Jiaxin 1; Hu, Jiangtao 1; Su, Yantao 1; Zhao, Ning 2; Xu, Jian 2; Liu, Fusheng 3,4; Pan, Feng 1
刊名	PARTICLE & PARTICLE SYSTEMS CHARACTERIZATION
	2015-07-01
卷号	32 期号:7 页码:771-778
英文摘要	The synthesis of ZnO with tailorable shapes and point defects is important for its potential applications. Here, a facile approach is demonstrated to prepare ZnO nanocages with controllable porous shell structures though sintering a Zn-based cyanide-bridged coordination polymer under different temperatures. The transformation of ZnCP microspheres into ZnO nano cages is based on two types of nanoscale Kirkendall effect, which are related to low temperature solid-solid interfacial oxidation and high temperature solid-gas interfacial reaction, respectively. At low temperature (around 300 degrees C) and before the ZnCP decomposition, the novel "hierarchical ZnO bigger nanocages embedded with smaller nanocages with 10 nm nanocrystals" can be generated. By contrast, when coming to the total decomposition of ZnCP at 800 degrees C, ZnO nanocages with significantly increased sizes and large cavities are generated, and large amounts of oxygen vacancies (V-O) are created at the same time, leading to the dramatic increased luminescence intensities of the UV peak due to V-O at 540 nm. Thus, the luminescence intensities versus defect concentration in the prepared ZnO nanocages can also be controlled by tuning the sintering temperatures.
收录类别	SCI
语种	英语
公开日期	2015-10-27
内容类型	期刊论文
源URL	[http://ir.iccas.ac.cn/handle/121111/27830]
专题	化学研究所_高分子物理与化学实验室
作者单位	1.Peking Univ, Shenzhen Grad Sch, Sch Adv Mat, Shenzhen 518055, Peoples R China 2.Chinese Acad Sci, Inst Chem, Lab Polymer Phys & Chem, Beijing Natl Lab Mol Sci, Beijing 100190, Peoples R China 3.Shenzhen Univ, Coll Mat Sci & Engn, Shenzhen 518060, Peoples R China 4.Shenzhen Key Lab Special Funct Mat, Shenzhen 518060, Peoples R China
推荐引用方式 GB/T 7714	Fan, Haosen,Zheng, Jiaxin,Hu, Jiangtao,et al. Controllable Preparation of Hierarchical ZnO Nanocages and its Oxygen Vacancy through the Nanoscale Kirkendall Process[J]. PARTICLE & PARTICLE SYSTEMS CHARACTERIZATION,2015,32(7):771-778.
APA	Fan, Haosen.,Zheng, Jiaxin.,Hu, Jiangtao.,Su, Yantao.,Zhao, Ning.,...&Pan, Feng.(2015).Controllable Preparation of Hierarchical ZnO Nanocages and its Oxygen Vacancy through the Nanoscale Kirkendall Process.PARTICLE & PARTICLE SYSTEMS CHARACTERIZATION,32(7),771-778.
MLA	Fan, Haosen,et al."Controllable Preparation of Hierarchical ZnO Nanocages and its Oxygen Vacancy through the Nanoscale Kirkendall Process".PARTICLE & PARTICLE SYSTEMS CHARACTERIZATION 32.7(2015):771-778.