Controllable Growth of ZnO Nanostructures by a Simple Solvothermal Process

A solvothermal method for growing ZnO nanostructures with different morphologies is presented. Nanowires, nanorods, nanocorns, nanoshuttles, nanoworms, and nanoflowers with excellent crystallinity have been successfully fabricated by combining two different coordination agents and adjusting the ratio of solvents and the reaction time. The nanowires and nanorods are of high aspect ratio (>500 and 50, respectively) and exhibit a perfect single crystalline wurtzite structure. The growth process responsible for the variation in morphology is discussed.