Room-Temperature Synthesis and Luminescent Properties of Single-Crystalline SrMoO4 Nanoplates
Room-Temperature Synthesis and Luminescent Properties of Single-Crystalline SrMoO4 Nanoplates
复制标题
单晶SrMoO4纳米片的室温合成及发光性能
DOI：
10.1021/jp907328v
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发表时间：
2009-12-10
影响因子：
3.7
通讯作者：
Jiang, Junying
中科院分区：
文献类型：
--
作者：
Mi, Yan;Huang, Zaiyin;Jiang, Junying
使用简便的液体方法在室温下可控合成了具有明显准方形形状的二维（2D）自支撑单晶 SrMoO4 纳米片。通过 XRD、FESEM 和 HRTEM 详细研究了纳米板的结构特征。结果表明，通过定向连接和自组装过程可以形成二维准方形SrMoO4纳米片。同时，对照实验表明，十六烷基三甲基溴化铵（CTAB）的浓度、含水量、反应时间以及Sr2+和MoO42−的浓度对纳米板的形成起着重要作用。此外，紫外可见 (UV-vis) 吸收光谱揭示了 3.12 eV 的特征光学带隙。最有趣的是，这种 SrMoO4 纳米板呈现出强烈而广泛的蓝色 PL 发射，与之前的报道相比，它表现出明显的蓝移，表明方形 SrMoO4 纳米结构具有巨大的应用潜力。
Two-dimensional (2D) free-standing single-crystalline SrMoO4 nanoplates of obvious quasi-square shape have been controllably synthesized using a facile liquid approach at room temperature. The structural characterizations of the nanoplates were investigated in detail by means of XRD, FESEM, and HRTEM. The results indicate that the 2D quasi-square SrMoO4 nanoplates can be formed through the oriented connection and self-assembly process. Meanwhile, controlled experiments show that the concentration of cetyltrimethylammonium bromide (CTAB), water content, reaction time, and concentration of Sr2+ and MoO42− play important roles in the formation of the nanoplates. Moreover, the ultraviolet−visible (UV−vis) absorbance spectra reveal a characteristic optical band gap of 3.12 eV. Most interestingly, such SrMoO4 nanoplates present a strong and broad blue PL emission, which exhibits a noted blue shift compared to previous reports, indicating that the square-shaped SrMoO4 nanostructures have great potential to be ap...