DefinePK

Abstract

This study investigates the effect of oxygen plasma conditioning to the final morphology of nanostructure prepared via facile hydrothermal synthesis. Two parameters; plasma temperature and flow rate of oxygen gas were varied while plasma time and power were kept constant. Scanning Electron Microscopy (SEM) analysis reveals that lower plasma temperature has bigger influence on diameter and length of the ZnO nanorods compared to high temperature setting. For both setting, lower oxygen flow rate will produce tighter distribution of diameter at ~ 10 nm and length of ~ 1.1 micron while higher oxygen flow rate produced nanorods with diameter of ~ 35 nm and ~ 2.2 micron in length. These results demonstrated that oxygen plasma process is one of the possible alternatives that can be used to manipulate the final morphology of ZnO nanostructure growth in facile hydrothermal growth method.