The shape deformation of hydrothermal-grown ZnO nanorods is observed.After annealing at high temperature,hexagonal ZnO nanorods change to become cylinder-like ones.The adjacent nanorods tend to connect to each other to form one nanostructure.Photoluminescence measurements show that a sample annealed at 600℃has a strong ultraviolet emission with a very weak visible emission,and with increasing annealing temperature the visible emission becomes more intense.It can be concluded from analyses of the morphological changes that the surface reaction between the doped C and ZnO is the main reason for the shape deformation of the ZnO nanorods.
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机译：Controllable synthesis and shape-dependent photocatalytic activity of ZnO nanorods with a cone and different aspect ratios and of short-and-fat ZnO microrods by varying the reaction temperature and time
