Title:Impact of Green Synthesis of Ag-nanoparticle Using Extracellular Manganese Peroxidase on Different Dye Degradation
Volume: 12
Issue: 3
Author(s): Rohida Amin Hoque and Meera Yadav*
Affiliation:
- Department of Chemistry, North Eastern Regional Institute of Science and Technology, Nirjuli, Itanagar, AP, 791109,
India
Keywords:
Manganese peroxidase, silver nanoparticles, dye decolorization, alizarin red S, methylene blue, methyl orange.
Abstract:
Introduction: The study explores the biosynthesis of silver nanoparticles (AgNPs) using
extracellular manganese peroxidase enzyme from Trichoderma parestonica. The synthesis was optimized
at a 1:1 enzyme and silver nitrate ratio, pH 12, shaking process, and 48-hour synthesis
period. The AgNPs were characterized using spectroscopic and microscopic techniques, showing
absorbance in UV-spectroscopy between 410-450 nm due to Surface Plasmon Resonance (SPR).
Methods: The stabilization of extracellular manganese peroxidase with the nanoparticles through
capping was observed by Fourier Transform Infrared Spectroscopy (FT-IR). The spherical shape
of the AgNPs, with an average size of 69.09 nm, is confirmed by the Field Emission Scanning
Electron Microscopy (FESEM) study. The size of the nanoparticles was also determined by Dynamic
Light Scattering (DLS) to be 75.99 nm. When synthesized AgNPs were used to decolorize
Alizarin red S (ARS), Methylene Blue (MB), and Methyl Orange (MO) in the presence of sodium
borohydride reducing agent, the results showed that, within 20 minutes, 90% of 0.1 mM ARS, MB,
and 75% 0.1 mM MO were degraded.
Results: This study demonstrated the potential of AgNPs synthesized from MnP enzyme in nanoremediation
projects, offering a sustainable solution to the problems and issues of dye-induced
wastewater pollution and fostering environmental conservation.
Conclusion: Enzymes are being studied in nanotechnology, leading to the development of enzyme
nanoparticles, which can be utilized in various fields like biosensors agriculture, drug delivery, and
bioremediation.