title: Synthesis of dumbbell-like ZnO microcrystals via a simple solution route.
abstract: Uniform dumbbell-like ZnO microcrystals had been successfully fabricated on a large scale via a facile solution technique under mild conditions. Obtained ZnO, with length of 1.2 to 1.6 μm and diameters of 350 to 600 nm, exhibited well-defined dumbbell-like morphology and hexagonal wurtzite structure and grew along the [001] direction. Effects of the reactant concentration on the sizes and morphologies of the ZnO products had been investigated, indicating that the reactant concentration played a crucial role in determining final sizes and shapes of the samples. In addition, the growth process of the dumbbell-like ZnO microcrystals was studied, and a possible formation mechanism was proposed. Furthermore, the optical properties of ZnO samples obtained at various reaction times were also investigated by photoluminescence (PL) spectroscopy. The PL spectra of the as-prepared dumbbell-like ZnO microcrystals showed a strong UV emission peak.
authors.affiliation: Air Force General Hospital, 343 PLA, Beijing 100142, China. Zhangqiq@xmu.edu.cn.
authors.forename: Zhenqing
authors.initials: Z
authors.lastname: Hou
authors.forename: Yixiao
authors.initials: Y
authors.lastname: Wang
authors.forename: Lihua
authors.initials: L
authors.lastname: Shen
authors.forename: Hao
authors.initials: H
authors.lastname: Guo
authors.forename: Gongxin
authors.initials: G
authors.lastname: Wang
authors.forename: Yang
authors.initials: Y
authors.lastname: Li
authors.forename: Shuifan
authors.initials: S
authors.lastname: Zhou
authors.forename: Qiqing
authors.initials: Q
authors.lastname: Zhang
authors.forename: Qian
authors.initials: Q
authors.lastname: Jiang