Abstract
The effects of surface oxidation of etched metallic Zn foils by hot water treatment for variable times and temperature investigated. ZnO nanostructures were obtained after undergoing hot water treatment at 50°C and 90°C for 2 to 24 hours. The SEM morphology showed ZnO nanostar-like and nanoneedle-like were observed with different hot water treatment temperature. XRD analysis confirmed the existing of ZnO nanostar-like and nanoneedle-like in a hexagonal wurzite structure. Growth of peak on (002) direction confirmed ZnO crystals are columnar in shape and anisotropic with wurzite structure oriented along c-axis. On the basis of the changes in morphology and microstructure induced by hot water treatment, it is concluded that the formation of ZnO are promising at low temperature.
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