Green Synthesis and Characterization of ZnO/α-Fe2O3 Nanocomposites Using Hydrocotyle umbellata Leaf Extract and Evaluation of Their Antimicrobial Properties

IF 3.7 2区化学 Q2 CHEMISTRY, APPLIED

Applied Organometallic Chemistry Pub Date : 2025-03-13 DOI:10.1002/aoc.70121

Raja Kaliyaperumal, Karuppiah Nagaraj, Karunganathan Sakthikumar, Mohammed F. Albeshr, Gunasekaran Velmurugan

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引用次数: 0

Abstract

In this study, ZnO/α-Fe₂O₃ nanocomposites were synthesized via a green coprecipitation method using Hydrocotyle umbellata leaf extract as a reducing and stabilizing agent. The synthesis involved Zn (NO₃)₂.6H₂O, ferric chloride, and sodium hydroxide in various molar ratios of ZnO/α-Fe₂O₃ (9:1, 8:2, 7:3), followed by calcination at 400°C. The synthesized nanocomposites were analyzed using XRD, FTIR, UV-Vis, and SEM to determine their crystalline structure, functional groups, optical properties, and surface morphology. The XRD analysis confirmed the formation of ZnO and α-Fe₂O₃ phases, whereas FTIR confirmed the presence of metal-oxygen bonds and phenolic compounds from the plant extract. UV-vis analysis showed a redshift in the absorption spectra, indicating a reduction in bandgap energy in ZnO/α-Fe₂O₃ nanocomposites compared to pure ZnO. The SEM results confirmed that the ZnO/α-Fe₂O₃ composites exhibit excellent crystallinity, with an average crystal size of approximately 39 nm, calculated using the Debye–Scherrer equation. The antimicrobial activity of ZnO/α-Fe₂O₃ nanocomposites was evaluated using the disk diffusion method against Staphylococcus aureus, Escherichia coli, and Aspergillus niger. The ZnO/α-Fe₂O₃ (8:2) formulation showed the strongest antibacterial effect against S. aureus, highlighting its potential for eco-friendly antimicrobial applications.

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来源期刊

Applied Organometallic Chemistry 化学-无机化学与核化学

CiteScore

7.80

自引率

10.30%

发文量

408

审稿时长

2.2 months

期刊介绍： All new compounds should be satisfactorily identified and proof of their structure given according to generally accepted standards. Structural reports, such as papers exclusively dealing with synthesis and characterization, analytical techniques, or X-ray diffraction studies of metal-organic or organometallic compounds will not be considered. The editors reserve the right to refuse without peer review any manuscript that does not comply with the aims and scope of the journal. Applied Organometallic Chemistry publishes Full Papers, Reviews, Mini Reviews and Communications of scientific research in all areas of organometallic and metal-organic chemistry involving main group metals, transition metals, lanthanides and actinides. All contributions should contain an explicit application of novel compounds, for instance in materials science, nano science, catalysis, chemical vapour deposition, metal-mediated organic synthesis, polymers, bio-organometallics, metallo-therapy, metallo-diagnostics and medicine. Reviews of books covering aspects of the fields of focus are also published.