Rice husk based MCM-41 nanoparticles loaded with Ag₂S nanostructures by a green and room temperature method and its antimicrobial property

ABSTRACT

In this paper, we chose rice husk ash as raw material and synthesized successfully mesoporous MCM-41 nanoparticles loaded with silver sulfide nanoparticles by green, simple and cost-effective method. The synthesized nanocomposites were characterized by transmission electron microscopy (TEM), scanning electron microscopy (SEM), X-ray diffraction (XRD), and Fourier transform infrared spectroscopy (FT-IR). The morphologies and sizes were characterized by SEM and TEM. The Ag₂S nanoparticles were spherical in shape with an effective diameter size of 14 nm. The antibacterial properties of nanocomposite were evaluated against Gram-negative (E. coli) and Gram-positive (S. aureus). The diameters of the inhibition zone, which was obtained by the agar disc diffusion for microorganisms S. aureus and E. coli were about 11 mm.

KEYWORDS:

• Green synthesis
• silver sulfide nanoparticles
• mesoporous MCM-41 silica
• antibacterial activity
• SEM

Funding

Financial support by Rasht Branch, Islamic Azad University Grant No. 4.5830 is gratefully acknowledged. The author thank Mr. Arad Pourahmad for his aids.