Nanofibrous MgO composites: structures, properties, and applications

Abstract

Nanomaterials have become an established area of academic research and they have gained commercial importance due to their valuable physico-chemical properties, such as large surface area, high mechanical strength as well as unique optical and electrical features. Numerous nanosize architectures have been researched and reported to date including quantum dots, fullerenes, nanorods, nanowires, nanofibers, nanosheets, nanowalls, nanocoils and nanoballs etc. Among these materials, nanofibers are extremely valuable morphologies used across many industries spanning from textile to medical applications and beyond. This review article has focused on the various works and reports of MgO-based applications and its overlap with nanofiber-based structures -a growing area of industrial and academic interest. A comprehensive review of the growing number of reports to date was carried out, so as to provide a unified resource for researchers going forward. As the acceptance and broader set of applications continues its exponential growth in commercial and academic output, it is envisaged that MgO-based composites will play a central part in many future reports of nanofibrous composites (and broader composite), due to the wide variety of applications to which MgO is suited, as well as other peripheral properties such as cost, availability, ease-ofhandling and use etc. Indeed, despite the many preliminary reports to date, there remains a great deal yet to discover and optimise for such systems. An Introduction to Nanofibers and MgO-based CompositesNanomaterials have become established areas of academic research and commercial importance due to their valuable (and often fascinating) physico-chemical properties, e.g.; large surface area, high mechanical strength as well as unique optical and electrical features. Numerous nanosized architectures have been reported to date including quantum dots, fullerenes, nanorods, nanowires, nanofibers, nanosheets, nanowalls, nanocoils and nanoballs etc. Among these materials, nanofibers are extremely valuable morphologies used across many industries spanning from textile to medical applications and beyond 1-5 .

Synthesis of glycine-mediated CuO–Fe2O3–MgO nanocomposites: Structural, optical, and antibacterial properties

“…12,[15][16][17][18][19][20][21] MgO is nontoxic and inexpensive as well, demonstrating a wider optical bandgap of 7.3 eV, high surface reactivity, high adsorption capacity, and unique physicochemical properties. 1,2,[22][23][24] Fe 2 O 3 is a n-type semiconductor metal oxide with energy bandgap of 2.1 eV. It is chemically stable, naturally abundant, benefit several applications, and most importantly it is cheap and safe material.…”

The Effect of Tartaric Acid Concentration on the Structural, Morphological and Optical Properties of CuO-Fe2O3-MgO Nanocomposite

“…Magnesium oxide (MgO) is considered a virtual dielectric material. It has unique physicochemical properties, a large bandgap (7.8 eV), high surface reactivity, high adsorption capacity, and is a highly ionic compound [1,4,17]. Maghemite (γ-Fe2O3) is an n-type semiconductor.…”

Advanced Face Mask Filters Based on PCL Electrospun Meshes Dopped with Antimicrobial MgO and CuO Nanoparticles

“…Another strategy to produce nanofiber masks and filters capable of reducing the spread of SARS-CoV-2 and inhibiting their activity is through the incorporation of antimicrobial agents [15,16]. These agents include metals, such as NPs of magnesium oxide (MgO), copper oxide (CuO), silver (Ag) and zinc (Zn), among others, which, due to their positive charge, can interact with the negatively charged cell wall of those pathogenic organisms [17], causing membrane disruption and damage of viral genome [4,18,19]. The use of metallic NPs in electrospun fibers was already reported successfully to combat other viruses such as influenza A [20], herpes, porcine parvovirus [21] or the bacteriophage MS2 [21,22], as well as bacteria such as E. coli, Bacillus subtilis (B. subtilis) and Staphylococcus gallinarum (S. gallinarum), demonstrating high anti-bacterial activity (>98% inhibition) [23][24][25].…”