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Water amount dependence on morphologies and properties of ZnO nanostructures in double-solvent system
Jinzhou Yin1, Feng Gao2, Chengzhen Wei3
11] Department of Materials Science and Engineering, Nanjing University, Nanjing 210093, P. R. China [2] State Key Laboratory of Coordination Chemistry, Coordination Chemistry Institute, Nanjing National Laboratory of Microstructures, Nanjing University, Nanjing 210093, P. R. China [3] School of Chemistry and Chemical Engineering, Huaiyin Normal University, Huai'an 223300, P. R. China.
Abstract:
ZnO materials with a range of different morphologies have been successfully synthesized via a simple double-solvothermal method in the presence of glycine. The morphologies of the products can be controlled from superstructures to microrods by adjusting the amount of water in the EtOH/H2O system. Photoluminescence (PL) studies reveal that the more amount of water was used, the stronger PL relative intensity of the green emission is, but the weaker ultraviolet emission. This might be attributed to the more defects of the products when the more water was used. The catalytic studies show that all the samples have good abilities to decrease decomposition temperature around 300°C and the decomposition temperature lowers with the increase of the relative intensity of ZnO green emission.
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