Controllable Hydrothermal Synthesis and Properties of ZnO Hierarchical Micro/Nano structures

Controllable Hydrothermal Synthesis and Properties of ZnO Hierarchical Micro/Nano structures

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Sun et al. have recently developed a simple hydrothermal route for the fabricating ZnO hierarchical micro/nano structure with excellent reproducibility. These flower-like micro/nano structures consisting of hierarchical rod alignments have the average diameter of 20-40 μm. The morphology can be conveniently controlled by selecting the reactant concentration and the quantity of citric acid. SEM and TEM analysis reveal that the hierarchical rod is single-crystal, suggesting that many micro/nano rods are assembled into ZnO hierarchical micro/nano structures. The surfactant plays a crucial role on the formation process of the ZnO micro/nano structures.

They have also investigated the optical properties of flower-like ZnO hierarchical micro/nano structures using UV-Vis and photoluminescence (PL) techniques. Room-temperature PL spectra reveals that the ZnO hierarchical micro/nano structures have a strong emission peak at 440 nm and several weak emission peaks at 420, 471 and 541 nm, respectively.

Original article citation

Weifei Li, Yangang Sun and Jingli Xu, “Controllable Hydrothermal Synthesis and Properties of ZnO Hierarchical Micro/Nanostructures”, Nano-Micro Lett. 4 (2), 98-102 (2012). http://dx.doi.org/10.1007/BF03353699

A Highlight from Yi-Jian Liu for NMSTR.

 

 

 

 

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