Plant-mediated bio-synthesis of silver–montmorillonite nanocomposite and antibacterial effects on gram-positive and -negative bacteria

Abstract

In this project, facile, rapid biosynthesis and characterization of silver-montmorillonite (MMT) nanocomposite is carried out at ambient temperature. Silver nanoparticles (Ag-NPs) were prepared by water extract of the plant [Satureja hortensis (L)] as the reducing agent and MMT as interlamellar space for controlling the size of Ag-NPs. MMT was sonicated in the aqueous AgNO 3 solution and Ag + ions were reduced to Ag° using water extract of Satureja hortensis (L). The nanocomposite was evaluated using ultraviolet-visible spectroscopy (UV-Vis), X-ray diffraction (XRD), scanning electron microscopy (SEM) and transmission electron microscopy (TEM). TEM study showed the formations of nanocomposite using water extract of Satureja hortensis L in the range of 4.88-26.70 nm and an average particles size of 15.79 nm. In addition, XRD studies indicated that the particles have a face centred cubic (FCC) structure. The nanocomposite showed antibacterial effects against bacteria.

Ni and Zn modified acid activated montmorillonite clay for effective removal of carbol fuchsin dye from aqueous solution

“…Figures 3b and 4b of both the clay composites reveled hexagonal, ellipsoid, rod like structures of various metal oxides which are attached and encapsulated (Fig. 4b) [27,28]. This confirms the heterogeneous morphology and variety of particle sized crystals incapsuled by clay minerals in both synthesized nanocomposites.…”

Mycogenic nanoparticles and their bio-prospective applications: current status and future challenges

“…However, the most applicable field of nanoparticles is pharmaceutical and biomedical science [31]. Nanoparticles formed by the noble metals like gold, silver, palladium and platinum are widely used in products of consumers goods such as creams, soaps, toothpastes, shampoos and shoes beside their applications in biomedical products [101]. Silver zeolites can be used in disinfection, food preservation and decontamination of products.…”

Halloysite nanotubes filled with salicylic acid and sodium diclofenac: effects of vacuum pumping on loading and release properties

“…Moreover, they are natural occurring building blocks that can be used as raw components for the design of new green and eco-sustainable materials [8][9][10][11][12][13]. Nowadays, the latter aspect appears to be the most important and attractive factor since it deals with some environmental needs which demand great efforts especially from researchers and technologists [14][15][16]. Halloysite is a very promising aluminosilicate whose unit formula is Al 2 Si 2 O 5 (OH) 4 •2H 2 O and whose most intriguing feature is its distinctive shape [17,18].…”