One Step Rapid Synthesis of Nano-Crystalline ZnO by Microwave-Assisted Solution Combustion Method

In this study nano-crystalline zno particles were synthesized by microwaveassisted solution combustion method. zinc nitrate and urea were used as oxidizer and fuel, respectively. the effect of fuel to oxidizer (f/o) ratio on zno powder properties was investigated by using different urea/nitrate ratios. x-ray diffractometer, scanning electron microscopy and fourier transform infra-red were used in powders characterization. the results showed that under microwave radiation the pure zno phase was formed after combustion reaction with different f/o ratios. the crystallite size was calculated in the range of 28- 32 nm using scherrer's equation. the result has shown that f/o ratio variation influenced the particle morphology from pyramid structure to partially sintered spherical. prog. color colorants coat. 3(2010), 19-25. © institute for color science and technology.