CdS NPs 

Synthesis of CdS Nanoparticles:

1. Preparation of Cadmium Solution

   • Add 2 g of cadmium acetate dihydrate to a beaker containing 40 mL of distilled water.

   • Stir magnetically until fully dissolved.

   • Heat to 70°C to ensure complete dissolution.

2. Preparation of Thiourea Solution

   • In a separate beaker, dissolve 0.56 g of thiourea in 40 mL of distilled water.

   • Stir magnetically to obtain a homogeneous solution.

3. Mixing the Solutions

   • Slowly add the thiourea solution (Solution 2) into the cadmium acetate solution (Solution 1).

   • Continue magnetic stirring for 2 hours to allow reaction.

4. Hydrothermal Treatment

   • Transfer the mixed solution into a Teflon-lined stainless-steel autoclave.

   • Heat at 150°C for 6 hours in an oven.

   • Allow to cool to room temperature before opening.

5. Purification of CdS Nanoparticles

   • Wash the CdS nanoparticles multiple times with distilled water or Ethanol (optional).

   • Centrifuge to remove impurities.

6. Drying Process

   • Dry the purified CdS nanoparticles at 80°C overnight in an oven or heater.