Shape-selective synthesis of gold nanoparticles and their catalytic activity towards reduction of p-nitroaniline

- Rapid synthesis of AuNPs in 6 min under microwave irradiation using NaOH, PVP and DMF.
- Shape of the AuNPs, tuned among truncated cube, cube, tetrahedral and octahedral.
- Preferential adsorption of Na ion on the surface of Au leads to the formation of different shapes.
- AuNPs exhibited excellent catalytic activity towards reduction of p-nitroaniline.