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Colloidal precipitates

Colloidal precipitates

The high insolubility of some precipitates can result in an unfavorable relative supersaturation. This can lead to colloidal particles with a large surface-to-mass ratio, where adsorption is promoted. For instance, in the precipitation of silver chloride, silver ions are adsorbed on the surface of the colloidal particles, forming a primary layer. This layer attracts ions of opposite charge (such as nitrate ions), forming a diffuse secondary layer of adsorbed ions. This electric double layer...

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Generation of Zerovalent Metal Core Nanoparticles Using n-2-aminoethyl-3-aminosilanetriol

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Published on: February 11, 2016

Silver Nanoparticles that Synthesis by Using

L Y Mohsen¹, M Fadhil Alsaffar², R Ahmed Lilo¹

¹Department of Biology, College of Science, University of Babylon, Babylon, Iraq.

Archives of Razi Institute

|June 5, 2023

Summary

This summary is machine-generated.

This study utilized Trichophyton rubrum fungus to biosynthesize silver nanoparticles (AgNPs). These AgNPs demonstrated significant antifungal activity, inhibiting fungal growth in a concentration-dependent manner.

Keywords:

Evaluate Antifungalx Silver Nanoparticles Trichophyton rubrum

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Area of Science:

Microbiology
Nanotechnology
Mycology

Background:

Biosynthesis of nanomaterials offers a sustainable alternative to traditional chemical methods.
Fungi, particularly dermatophytes like Trichophyton rubrum, are increasingly explored for their potential in nanoparticle synthesis.

Purpose of the Study:

To investigate the biosynthesis of silver nanoparticles (AgNPs) using the fungus Trichophyton rubrum.
To characterize the synthesized AgNPs and evaluate their antifungal efficacy.

Main Methods:

Trichophyton rubrum strains were cultured in a mineral salt medium for 5-7 days.
Cell-free filtrate was used with 1 mM silver nitrate (AgNO3) for AgNP biosynthesis.
Scanning Electron Microscopy (SEM) was employed for characterization and size determination.

Main Results:

A color change to reddish-light brown indicated the reduction of Ag+ ions and formation of AgNPs within 72 hours.
SEM confirmed the presence of spherical AgNPs with an average size of approximately 100nm.
Silver nanoparticles exhibited concentration-dependent antifungal activity, with significant growth reduction observed at 150 ppm.

Conclusions:

Trichophyton rubrum is an effective agent for the green synthesis of silver nanoparticles.
The biosynthesized silver nanoparticles possess potent antifungal properties, suggesting potential therapeutic applications.