Abstract
Nowadays, the size, shapes and morphologies of zinc oxide (ZnO) can be controlled in a fascinating way by improved synthesis methods and controlled nucleation and growth processes driven by varying the experimental conditions. Nanoscience holds a particular fascination with ZnO because of its properties, which vary based on shape and how they evolve across a wide range of applications. We report here the room temperature synthesis of rectangular shaped cadmium (Cd) doped ZnO nanostructures by a wet chemical route employing surface modifications with the surfactants polyvinyl pyrrolidone, polyvinyl alcohol and biotin. A simple and general mechanism for the formation of the Cd doped ZnO nano-rectangles is discussed. The crystallographic, morphological and optical properties of the prepared nanostructures are also studied in connection with the role of surfactants and dopant, and correlated with their shape.
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