I have performed the green synthesis of AuNPs using aqueous leaf extract. It was noticed that by using same amount of leaf extract the different metal ion produced mixture of different shaped and size AuNPs.
It was also observed that on increasing the metal ion concentration, number of triangular and hexagonal nanoparticles increased with increased size.
Please help me to find out the reason after this.
Hi Vijay Kumar!
Even using the the same amount of leaf extract you can obtain several shapes of metal nanoparticles, this kind of synthesis is very delicate and it may be due to the purity of your leaf extract. These shapes are thermodinamic local minimums of surface energy and if the environment is slightly different it will grow in different shapes/sizes.
You will probably be able to see changes in shape/size when varying the metal precursor, temperature and synthesis time.
You will be able to find more at this review:
http://pubs.acs.org/doi/abs/10.1021/cr030698%2B
Hello Rodrigo Amaral Coutinho Bartolomeu
Thank you so much for your valuable information.
Its really very helpful.
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