Title of article :
Green chemistry approach for the synthesis of gold nanoparticles with gum kondagogu: characterization, catalytic and antibacterial activity
Author/Authors :
Bhagavanth Reddy, G Department of Chemistry - University College of Science - Osmania University - Hyderabad, India , Madhusudhan, A Department of Chemistry - University College of Science - Osmania University - Hyderabad, India , Ramakrishna, D Department of Chemistry - University College of Science - Osmania University - Hyderabad, India , Ayodhya, D Department of Chemistry - University College of Science - Osmania University - Hyderabad, India , Venkatesham, M Department of Chemistry - University College of Science - Osmania University - Hyderabad, India , Veerabhadram, G Department of Chemistry - University College of Science - Osmania University - Hyderabad, India
Abstract :
Gold nanoparticles (AuNPs) were prepared
from HAuCl4 using gum kondagogu, by adopting green
synthesis, which is a simple, low cost and ecofriendly
technique. The gum kondagogu (Cochlospermum gossypium)
serves as both reducing agent and stabilizer. The
formation of the AuNPs was identified through the change
in the color of the solution from yellow to red. The synthesized
AuNPs were characterized by various techniques.
The green synthesized AuNPs were found to be stable
in the pH range pH 2–12 and up to the concentration
of 5 M NaCl. The stabilized AuNPs demonstrated the
excellent catalytic activity in reducing p-nitrophenol to
p-aminophenol in the presence of a reducing agent, NaBH4.
The effects of catalyst dose and temperature were studied.
The synthesized, new gum-based catalyst was very efficient,
easy to prepare, stable, cost-effective and
ecofriendly. The synthesized AuNPs showed good antibacterial
activity.
Keywords :
Gold nanoparticles , Gum kondagogu , Catalytic activity , Antibacterial activity , Nanomaterials
Journal title :
Astroparticle Physics
