ZnO NPs

Synthesis Procedure:

1. Preparation of Zinc Acetate Solution:

   • Dissolve 1.0 g of zinc acetate dihydrate in 20 mL of absolute ethanol under continuous stirring until fully dissolved.

2. Preparation of NaOH Solution:

   • Separately, dissolve 0.2 g of sodium hydroxide (NaOH) in 20 mL of absolute ethanol.

3. Precipitation Reaction:

   • Gradually add the NaOH solution drop by drop into the zinc acetate solution while continuously stirring for 30 minutes to form ZnO precursors.

4. Thermal Treatment:

   • Heat the resulting mixture in a water bath at 70°C for 2 hours to facilitate the formation of ZnO nanoparticles.

5. Washing and Drying:

   • Wash the ZnO NPs thoroughly with ethanol and distilled water to remove any residual impurities.

   • Leave the washed ZnO NPs to air-dry at 50°C for 24 hours.

6. Annealing for Crystallization:

   • Collect the dried ZnO NPs in powder form and anneal them in a muffle furnace at 500°C for 2 hours to enhance crystallinity.

7. Final Collection:

   • The synthesized undoped ZnO nanoparticles are now ready for further characterization and applications.