Bin Miao

Synthesis of SnO2 flower-like architectures by varying the hydrothermal reaction time

We successfully synthesized hierarchical SnO2 flower-like architectures assembled with nanorods via a facile hydrothermal route under mild condition. The structures and morphologies of the obtained hierarchical architectures were characterized by means of powder X-ray diffraction, scanning electron microscopy and transmission electron microscopy. By varying hydrothermal reaction time, we obtained the sphere-like and flower-like SnO2. The evolution that the morphology changing from sphere-like to flower-like was systematically investigated. Moreover, the mechanism of formation for this structure was proposed in detail.

Synthesis and gas sensing properties of novel SnO2 nanorods

We report the microstructures and gas sensing properties of two novel SnO2 nanorods prepared by hydrothermal method with the utilizing of cetyltrimethylammonium bromide and polyethylene glycol. The structures and morphologies of the dense and porous nanorods were characterized by means of powder X-ray diffraction and scanning electron microscopy. The gas sensing performances towards ethanol of the two samples were investigated. The results show that the porous SnO2 nanorods display excellent gas response to ethanol, indicating SnO2 as a potential gas sensing material for broad applications.

Octahedral cuprous oxide synthesized by hydrothermal method in ethanolamine/distilled water mixed solution

Octahedral cuprous oxide has been synthesized by a simple hydrothermal method using copper sulphate and sodium hydroxide as raw materials in ethanol amine/distilled water mixed solution. The synthesized cuprous oxide powders were characterized by X-ray diffraction (XRD) and field emission scanning electron microscopy. XRD pattern exhibited that the nanocrystalline nature with cubic structure for the synthesized nanostructures. Analysis results reveal that pH value of solution plays an important role in the formation of octahedron shape for cuprous oxide. A probable formation mechanism of octahedral cuprous oxide is also proposed.