Solvothermal preparation of flower-like ZnS microspheres, their photoluminescence and hydrogen absorption characteristics
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- 作者：Mingyan Li ; Fengping Wang ; Zhiyuan Wang ; M. Zubair Iqbal ; Qurat-Ul-Ain Javed ; Yanzhen Lu ; Mei Xu ; Quanshui Li
- 关键词：Microstructure ; ZnS ; Surfaces ; Hydrogen absorption
- 刊名：Materials Letters
- 出版年：2013
- 出版时间：1 December, 2013
- 年：2013
- 卷：112
- 期：Complete
- 页码：81-83
- 全文大小：732 K
文摘
The complex 3D flower-like ZnS microspheres have been synthesized via a one-pot template-free solvothermal method in mixed solvents of ethylenediamine, ethanolamine and ethanol without any surface-active agent. The prepared nanostructures have been characterized by field emission scanning electron microscopy (FESEM), X-ray diffraction (XRD), transmission electron microscopy (TEM) and high resolution transmission electron microscopy (HRTEM). The FESEM, TEM and HRTEM results exhibit that the 3D ZnS architectures present flower-like microstructures self-assembled with aligned high-density nanosheets. The XRD results show that the flower-like ZnS microspheres are wurtzite structure and highly crystalline. The photoluminescence spectrum of the flower-like ZnS microspheres exhibits a strong broad defect related band at 400-600 nm which almost covered the whole visible region. The first ever study on hydrogen absorption characteristics of the ZnS microspheres performed at 373 K shows an absorption capacity of 0.84 wt % .