Enhanced photocatalytic efficiencies in a bifunctional ZnO/PVA nanocomposites derived from Capparis zeylanica L

Prathipkumar Subramaniyan; Vijayakumar Subramaniyan; Sangeetha Renganathan; Vidhya Elavarasan; Mysoon M Al-Ansari; Majdoleen Aldawsari; Praseetha Prabhakaran Kala; Woong Kim

doi:10.1016/j.envres.2023.116482

Enhanced photocatalytic efficiencies in a bifunctional ZnO/PVA nanocomposites derived from Capparis zeylanica L

Environ Res. 2023 Sep 15:233:116482. doi: 10.1016/j.envres.2023.116482. Epub 2023 Jun 21.

Authors

Prathipkumar Subramaniyan¹, Vijayakumar Subramaniyan², Sangeetha Renganathan³, Vidhya Elavarasan⁴, Mysoon M Al-Ansari⁵, Majdoleen Aldawsari⁵, Praseetha Prabhakaran Kala⁶, Woong Kim⁷

Affiliations

¹ Nanotechnology Research Centre, SRM Institute of Science and Technology, Kattangulathur, Chennai, India.
² PG and Research Department of Botany, A.V.V.M Sri Pushpam College (Autonomous), Affiliated to Bharathidasan University, Tiruchirappalli, Poondi, 613503, India. Electronic address: svijaya_kumar2579@rediff.com.
³ Department of Mathematics, A.V.V.M Sri Pushpam College (Autonomous), Affiliated to Bharathidasan University, Tiruchirappalli, Poondi, 613503, India.
⁴ PG and Research Department of Botany, A.V.V.M Sri Pushpam College (Autonomous), Affiliated to Bharathidasan University, Tiruchirappalli, Poondi, 613503, India.
⁵ Department of Botany and Microbiology, College of Science, King Saud University, Riyadh, 11451, Saudi Arabia.
⁶ Department of Nanotechnology, Noorul Islam Center for Higher Education, Kumaracoil, Thuckalay, Tamilnadu, India.
⁷ Department of Environmental Engineering, Kyungpook National University, Daegu, South Korea.

PMID: 37352952
DOI: 10.1016/j.envres.2023.116482

Abstract

The modern food sector demands versatile nanocomposites of polymers for food to wrappers to inactivate germs linked to foods in order to ensure quality throughout the packaging process. Recently, it has become quite appealing to use zinc oxide nanocomposite with polyvinyl alcohol (PVA) assistance for food storage containers. Variable combinations of zinc acetate and Capparis zeylanica leaf extract (3:1, 1:7, 1:3, and 1:1) were used to create nanostructured ZnO at the desired pH (10.5). ZnO/PVA nanocomposites films were created with different weight % of (16, 13, 9 and 5%) ZnO nanoparticles by using solution casting method. The generated ZnO and ZnO/PVA nanocomposites (NCs) were characterized using analytical techniques like X-ray diffraction spectroscopy (XRD), ultraviolet spectroscopic analysis (UV-Vis), Fourier-transform infrared analysis (FT-IR), and field emission scanning electron microscopic study (FE-SEM). The generated ZnO and ZnO/PVA NCs were tested for their efficacy as antibacterial agents against Gram + ve (Streptococcus pyogenes, Staphylococcus aureus) and Gram -ve (Pseudomonas aeruginosa, and E. coli) bacteria. Under UV-visible irradiation, the methylene blue (MB) breakdown caused by the fabricated undoped ZnO and ZnO/PVA nanomixture was investigated. The FE-SEM investigation for synthesized ZnO from a 1:1 ratio exhibited spherical shaped appearance. However, the nanocomposite made with 5% ZnO showed equally scattered nanoflake particles in the matrix of PVA film as well as on the surface. The XRD results showed that ZnO synthesized with a higher proportion of plant extract produced smaller crystallites, whereas ZnO synthesized with a lower percentage of plant extract produced bigger crystallite sizes. The optimum concentration for the breakdown of methylene blue (MB) among the various concentrations examined was 5% ZnO/PVA. Furthermore, a study of the biomedical efficiency of undoped ZnO and ZnO/PVA revealed that 5% ZnO/PVA had the potential antibacterial efficacies.

Keywords: Antibacterial; Capparis zeylanica; Green synthesis; Nanocomposites; Photodegradation; ZnO/PVA.

Publication types

Research Support, Non-U.S. Gov't

MeSH terms

Anti-Bacterial Agents / chemistry
Anti-Bacterial Agents / pharmacology
Capparis*
Escherichia coli
Methylene Blue / chemistry
Nanocomposites* / chemistry
Plant Extracts / chemistry
Polyvinyl Alcohol / chemistry
Spectroscopy, Fourier Transform Infrared
X-Ray Diffraction
Zinc Oxide* / chemistry

Substances

Zinc Oxide
Polyvinyl Alcohol
Methylene Blue
Anti-Bacterial Agents
Plant Extracts