Aqueous solution synthesis and photoluminescence properties of two-dimensional dendritic PbWO4 nanostructures
Aqueous solution synthesis and photoluminescence properties of two-dimensional dendritic PbWO4 nanostructures
复制标题
二维树枝状PbWO4纳米结构的水溶液合成及光致发光性能
DOI：
10.1016/j.materresbull.2014.04.015
复制
发表时间：
2014-08-01
影响因子：
5.4
通讯作者：
Chen, Z. L.
中科院分区：
文献类型：
--
作者：
Wang, W. S.;Zhen, L.;Chen, Z. L.
采用水溶液法在室温下制备了PbWO 4二维树枝状纳米结构。利用X射线衍射仪、扫描电镜、透射电镜和X射线能谱仪对样品进行了表征。PbWO 4 2DDN在一个平面上，具有近似圆形的形状和类似于10 μ m的尺寸。PbWO 4 2DDNs由直径约200 nm的弯曲纳米线组成，它们连接在一起形成网络纳米结构。考察了反应物浓度、反应温度、反应时间等因素对2DDNs形成的影响，并提出了2DDNs形成的可能机理。研究了PbWO 4的紫外-可见光谱和光致发光光谱等光学性质。该合成路线具有首次合成PbWO 4 2DDNs、合成工艺简单、反应温度低、重复性好等优点。(C)2014爱思唯尔有限公司版权所有。
PbWO4 two-dimensional dendritic nanostructures (2DDNs) were prepared at room temperature through a facile aqueous solution route. X-ray diffraction, scanning electron microscope, transmission electron microscope and X-ray energy dispersive spectrometer were used to characterize the obtained samples. The PbWO4 2DDN was in one plane, with a nearly circular shape and sizes of similar to 10 mu m. The PbWO4 2DDNs were composed of curved nanowires around 200 nm in diameters, which were connected together to form a network nanostructure. The effects of reaction conditions including the concentration of react reagents, the reaction temperature, and the reaction time were systematically investigated and a possible formation mechanism for the formation of 2DDNs was proposed. The optical properties, such as UV-vis spectra and photoluminescence spectra of PbWO4, were studied. The advantages of this synthetic route include the first synthesis of PbWO4 2DDNs, simple synthetic procedure, room reaction temperature, and high reproducibility of the process. (C) 2014 Elsevier Ltd. All rights reserved.