article · Materials Research Express
Highly mesoporous ternary metal oxide nanomaterials containing zinc, iron, and manganese were produced using a combination of sol-gel and self-propagation methods assisted by poly(vinyl alcohol). Structural and spectroscopic analyses confirmed the semi-crystalline, porous morphology of the materials, along with enhanced specific surface area and pore diameter. The proportions of poly(vinyl alcohol) and metal precursors were systematically evaluated to identify optimal material properties. When assessed for antibacterial performance against Escherichia coli and Staphylococcus aureus, the optimised composite demonstrated substantial bacterial inhibition. Specifically, a formulation containing designated ratios of the polymer and metal oxides at a concentration of 125 micrograms per millilitre achieved clear inhibition zones measuring 28 millimetres for Escherichia coli and 29 millimetres for Staphylococcus aureus.
Bacterial infections from both Gram-positive and Gram-negative pathogens pose persistent global health challenges. Developing advanced nanomaterials with high surface areas and porous structures offers a promising pathway for designing potent antimicrobial agents. Demonstrating that polymer-assisted metal oxide composites effectively inhibit common bacteria such as Escherichia coli and Staphylococcus aureus helps expand alternative strategies against bacterial contamination.
The composite demonstrates potential utility as an antimicrobial additive for products targeting bacterial pathogens such as Escherichia coli and Staphylococcus aureus. Relevant end users could include developers of antimicrobial coatings, healthcare materials, or sanitation treatments. Based solely on the abstract, this work represents early-stage laboratory research limited to synthesis and in vitro Petri dish testing, meaning it remains several stages away from practical commercial application.
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Abstract The poly (vinyl alcohol) (PVA) assisted highly mesoporous Zn-Fe-Mn oxides nanomaterials were synthesized using the sol-gel followed by the self-propagation techniques. The UV–vis spectroscopic technique was used to study the optical properties of the materials. The presence of metal-oxygen bond and deposited OH − /H 2 O species were characterized by FT-IR spectroscopic technique. The porous morphology and elemental analysis were confirmed by the SEM/EDX and further morphological and crystal structure studies were conducted using TEM/HRTEM techniques. The semi-crystallinity and composition analyses were verified from XRD patterns. Using the BET N 2 adsorption-desorption analytical techniques; the porosity, specific surface area, and pore diameter enhancements were confirmed. The optima of PVA and precursors percentage were selected with the help of XRD, UV–Vis, and SEM techniques. The potential of the materials towards antibacterial activities was evaluated against both Gram-negative Escherichia coli and Gram-positive Staphylococcus aureus bacteria. The 50(0.7) PVA assisted ternary metal oxide nanocomposite (PVA-TMONC) with 125 μ g ml −1 concentration showed better inhibition zone for both Escherichia coli and Staphylococcus aureus bacteria, with a value of 28 and 29 mm in diameter, respectively.
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DOI: 10.1088/2053-1591/ab87d5
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