Abstract
As an important semiconductor material, ZnO nanocrystals with various morphologies have been extensively investigated in the literature. In this paper, we designed a simple reflux route to prepare ZnO nanorods, employing Zn(NO3)2·6H2O and urea as the original reactants. Our interest mainly focused on the formation process of ZnO nanorods. The reaction was carried out at 120°C. XRD analyses showed that the final product underwent a conversion from Zn4(OH)6CO3·H2O to ZnO with the prolonging of the reaction duration from 10 to 120min. SEM observations discovered that during the above conversion the final product comprised of nanosheets, nanotubes and nanorods, respectively. Simultaneously, nanosheets, nanotubes or/and nanorods were found to coexist in certain periods. A possible mechanism was suggested for explaining the formation of ZnO nanorods.
Published Version
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