article · Inorganic and Nano-Metal Chemistry
Zinc oxide based binary metal oxide nanocomposites supported by poly(vinyl alcohol) were prepared using a sol-gel-self-propagation route. Structural, optical, and morphological characterisation confirmed that the resulting nanocomposites have nanoscale dimensions, a porous morphology, reduced reflectance, and lower crystallinity compared to pure zinc oxide. Functional testing demonstrated that the composites provide strong antibacterial action against both Gram-positive and Gram-negative bacteria, outperforming pure zinc oxide. In particular, the enlarged surface area facilitated better contact with bacterial cells, yielding a 24-millimetre zone of inhibition against Escherichia coli. Furthermore, electrochemical measurements confirmed that the composite formulation possesses superior electrochemical activity compared to untreated zinc oxide.
Bacterial contamination and the demand for functional electrochemical materials drive the search for high-performance composite systems. By integrating zinc oxide into a poly(vinyl alcohol) matrix, the material gains a larger active surface area that significantly improves germicidal action against common pathogens. These dual antibacterial and electrochemical qualities provide a useful basis for developing advanced functional materials across hygiene and electrochemistry.
The material could find use in antibacterial coatings, healthcare hygiene products, and electrochemical components. Prospective users include industrial coating manufacturers, medical surface developers, and electrochemical device producers. Given that the abstract only demonstrates laboratory-scale synthesis, physical characterisation, and benchtop testing, this technology represents an early-stage research finding that requires substantial performance validation and scale-up evaluation before real-world adoption.
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The present work reports the application of poly (vinyl alcohol) (PVA) supported sol-gel-self-propagation route for the synthesis of ZnO-based binary metal oxides nanocomposites (BMONCs). The DRS–UV–Visible spectroscopic method confirmed the less-reflectance properties of PVA-BMONCs compared to ZnO. The crystallinity of PVA-BMONCs was found to be lesser than that of ZnO as confirmed by XRD analysis. The predictable metal-oxygen bond was confirmed by FTIR spectrophotometry. The porous morphology of PVA-BMONCs was characterized by BET technique and SEM microscopy. The TEM-HRTEM microscopic images confirmed the nano-size and actuality of the composites. The synthesized PVA-BMONCs exhibited significant antibacterial action on both Gram-positive and Gram-negative bacteria. Compared to ZnO, PVA-BMONCs are showed enhanced antibacterial activity. The increased surface area provides superior contact with the surface of bacteria resulting higher zone of inhibition of 24 mm on E. coli bacteria. The CV-EIS techniques have approved the superior electrochemical activity for ZnO/PVA NCs.
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DOI: 10.1080/24701556.2020.1814338
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