Poly‐vinyl‐pyrrolidone capped luminescent zinc oxide nanocomposites as excellent tools for germicidal and photo‐catalytic performances

• Published in: Luminescence (Chichester, England) England), 2024-07, Vol.39 (7), p.e4817-n/a
• Main Authors: Praseetha, Prabhakaran Kala, Vijayakumar, Subramaniyan, Vidhya, Elavarasan, Wadaan, Mohammad Ahmad, Mythili, Raja, Prathipkumar, Subramaniyan
• Format: Article
• Language: English
• Subjects: Acetates; Acetic acid; Anti-Bacterial Agents - chemical synthesis; Anti-Bacterial Agents - chemistry; Anti-Bacterial Agents - pharmacology; antibacterial; Antibacterial activity; Antibiotics; Arrays; Biocompatibility; Biopolymers; Catalysis; Crystals; Dyes; Electron microscopy; Field emission microscopy; Fourier transforms; garlic/onion peel extract; green synthesis; Hydroxides; Image processing; Infrared spectroscopy; Luminescence; Luminescent Agents - chemical synthesis; Luminescent Agents - chemistry; Methylene blue; Methylene Blue - chemistry; Microbial Sensitivity Tests; Microorganisms; Nanocomposites; Nanocomposites - chemistry; Nanocrystals; Nanomaterials; Nanotechnology; Particle Size; Photochemical Processes; photodegradation; Plant extracts; Polyvinylpyrrolidone; Povidone - chemistry; PVP/ZnO; Scanning electron microscopy; Sodium; Sodium hydroxide; Stabilizers (agents); Thickness; Toxicity; X-ray diffraction; Zinc; Zinc acetate; Zinc oxide; Zinc Oxide - chemistry; Zinc Oxide - pharmacology; Zinc oxides
• ISSN: 1522-7235; 1522-7243; 1522-7243
• DOI: 10.1002/bio.4817

Alternate antibiotics developed through the involvement of nanomaterials are gaining interest due to their economical and lower toxicity concerns. A newly developed biopolymer‐based polyvinylpyrrolidone/zinc oxide (PVP/ZnO) nanocomposite (NCs) was efficiently synthesized by an environment‐friendly approach, utilizing onion and garlic peel extract as a bio‐surfactant, zinc acetate as the source, PVP as the stabilizing agent, and sodium hydroxide as the precipitant. Fourier transform infrared spectroscopy (FT‐IR) and X‐ray diffraction (XRD) investigations verified the crystalline properties of ZnO, PVP, and PVP/ZnO‐based NCs. The structure of the biopolymer‐linked ZnO particles interpolated inside the PVP array was seen to have a layered and flaky structure, as validated by field emission scanning electron microscopy (FE‐SEM) analysis, which revealed its occurrence in the nanometer range. The XRD examination verified that the surface topographical image of PVP/ZnO NCs had an average thickness of 21 nm. The PVP/ZnO nanocrystals demonstrated exceptional photocatalytic efficacy, with a breakdown rate of 88% and almost 92% for the methylene blue dye. Therefore, the PVP/ZnO matrix exhibits superior antibacterial activity compared to other extracts, resulting in greater microbial suppression. The results above indicate that the ZnO‐intercalated PVP array has a stronger reinforcing effect than other components. Hence, PVP/ZnO nanocrystals exhibit enormous potential as a favorable substance for environmental and biomedical intentions. ZnO nanoparticles have been synthesized using onion and garlic peel extract for the first time. The precursor and extract dilution of ZnO and PVP/ZnO NCs, as well as aqueous solution extracts of onion and garlic peels, were successfully synthesized. The synthesis of PVP/ZnO NCs showed potential antibacterial and photocatalytic efficiency.