Green Synthesis and Characterization of Magnesium Oxide (MgO) Nanoparticles as Biological Agent

The synthesis of MgO nanoparticles is divided into various steps, such as mixing, stirring, filtering, drying, and grinding. Initially (MgNO3.6H2O) of weight 2 g taken into beaker to form 0.2 M solution in distilled water. Then 0.8 g (0.5 M) of NaOH dissolved in 100 ml distilled water. Magnesium nitrate solution stirred for half an hour using magnetic stirrer for constant stirring. Then 0.5 M sodium hydroxide solution was added drop wise by dropper to the prepared Magnesium nitrate (MgNO3.6H2O) Solution while Stirring it continuously. After 30 minutes, milky white color precipitate of Magnesium Hydroxide appeared in beaker. The PH of the solution was 12.5 as measured by the pH paper. Precipitate was filtered by filter paper and washed with methanol three to four times to remove ionic impurities and then dried in air, then after drying white powder sample were annealed in air for two hours at 300 ◦C and 500 ◦C. The dried powder is then crushed and made into very fine powder by using mortal pestle.