Copper Nanoparticles Synthesis by using Silver Nitrate, PVP and Hydrazine Hydrate via Chemical Reduction Method

Copper Nanoparticles Synthesis by using Silver Nitrate as Precursor, PVP as Stabilising Agent and Hydrazine Hydrate as Reducing Agent via Chemical Reduction Method

1. CHECK LIST

   Copper Nitrate, Polyvinylpyrrolidone (PVP), Hydrazine Hydrate, Deionized Water, RB Flask, Magnetic Stirrer

   

2. STEP 1.

   Add 2g Polyvinylpyrrolidone-30 in 100ml water and set temperate to 60ºC to dissolve it properly.

   

3. STEP 2.

   Add 1g Copper Nitrate and stir for more 10 minutes.

   

4. STEP 3.

   Add Hydrazine Hydrazine Hydrate drop-wise in vigorous stirring until the colour turns Green.

   

5. STEP 4.

   The Green colour indicates the formation of Copper Nanoparticles in water.

   

6. RESULTS

   The average size of Copper Nanoparticles would be less than 10nm; UV-Vis spectroscopy absorption peak would be obtained around 600nm.

   

7. Factors Affecting Synthesis

   Concentration of Polyvinylpyrrolidone: Polyvinylpyrrolidone (PVP) is used as the capping agent in this synthesis method. Hence if the concentration of PVP is changed, then size of Copper Nanoparticles will also change. Lower the concentration of PVP, bigger the particle size.
   Concentration of Copper Nitrate: Copper Nitrate is used as the precursor in this. Higher the concentration of Copper Nitrate, bigger the size of Copper Nanoparticles.
   Concentration of Hydrazine Hydrate: Hydrazine Hydrate is used as the reducing agent in this synthesis method. Higher the concentration of Hydrazine Hydrate, more chances of agglomeration of Copper Nanoparticles, leads to bulky reddish bulky color particles.
   Effect of Temperature: Higher temperature mostly leads to good size distribution size range particles but in this synthesis PVP polymer bonds may break if you try to increase the temperate beyond 80ºC.

8. NOTE: All the experiments should be done under the guidance of lab Incharge; and proper lab safety instructions.