Synthesis, characterization and hydrogen storage characteristics of flower-like SnO2 porous microspheres
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- 作者：Zhiyuan Wang ; Fengping Wang ; Mingyan Li ; M. Zubair Iqbal ; Qurat-Ul-Ain Javed ; Yanzhen Lu ; Mei Xu ; Quanshui Li
- 关键词：Sucrose-assisted solvothermal synthesis ; SnO2 hollow nanospheres ; Porous materials ; Nanocrystalline materials ; Hydrogen absorption
- 刊名：Materials Letters
- 出版年：15 March, 2014
- 年：2014
- 卷：119
- 期：Complete
- 页码：36-38
- 全文大小：854 K
文摘
Flower-like SnO2 porous microspheres self-assembled by hollow nanospheres have been successfully synthesized via a sucrose-assisted solvothermal method. The morphology, structure and composition of the as-prepared product have been characterized by field emission scanning electron microscopy (FESEM), transmission electron microscopy (TEM), high resolution transmission electron microscopy (HRTEM) with selected area electron diffraction (SAED) and X-ray diffraction (XRD). The results show that the microspheres are self-assembled completely by well-defined SnO2 hollow nanospheres with porous wall composed of single crystalline nanoparticles. A growth mechanism has been proposed to explain the growth processes for such novel structures. First ever study on hydrogen absorption characteristics of the flower-like SnO2 microspheres performed at 373 K shows a good absorption capacity of 0.92 wt%.