Influence of strong bases on the synthesis of silver nanoparticles (AgNPs) using the ligninolytic fungi .

Saudi J Biol Sci

Universidad de Buenos Aires, Facultad de Ciencias Exactas y Naturales, Departamento de Biodiversidad y Biología Experimental, Ciudad Autónoma de Buenos Aires C1428 EHA, Argentina.

Published: November 2019

AI Article Synopsis

  • Silver nanoparticles (AgNPs) were biosynthesized using fungal extract from a white rot basidiomycete, which produces ligninolytic enzymes that aid in the green synthesis process.
  • The optimal conditions for synthesizing AgNPs included a 72-hour incubation period at pH 13, adjusted using NaOH, along with the addition of silver nitrate (AgNO).
  • The nanoparticles were characterized using methods like UV-visible spectroscopy, scanning electron microscopy (SEM), and energy-dispersive X-ray spectroscopy (EDX), highlighting a cost-effective and environmentally friendly approach to synthesis without toxic reagents.

Article Abstract

Silver nanoparticles (AgNPs) were biosynthesized using fungal extract of , a white rot basidiomycete involved in wood decay worldwide, which produces several ligninolytic enzymes. According to previous studies using fungi, enzymes are involved in nanoparticles synthesis, through the so-called green synthesis process, acting as reducing and capping agents. Understanding which factors could modify nanoparticles' shape, size and production efficiency is relevant. The results showed that under the protocol used in this work, this strain of is able to synthesize silver nanoparticles with the addition of silver nitrate (AgNO) to the fungal extract obtained with an optimal incubation time of 72 h and pH 13, using NaOH to adjust pH. The progress of the reaction was monitored using UV-visible spectroscopy and synthesized AgNPs was characterized by scanning electron microscope (SEM), through in-lens and QBDS detectors, and energy-dispersive X-ray spectroscopy (EDX). Additionally, SPR absorption was modeled using Mie theory and simple nanoparticles and core-shell configurations were studied, to understand the morphology and environment of the nanoparticles. This protocol represents a simple and cheap synthesis in the absence of toxic reagents and under an environmentally friendly condition.

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Source
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6864291PMC
http://dx.doi.org/10.1016/j.sjbs.2018.09.006DOI Listing

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