Synthesis and Characterization of Hybrid Nanocomposites Based on Poly(2-chloroaniline)/Zinc Oxide Nanofiller for Antibacterial Studies Against Escherichia coli and Bacillus subtilis

Date

2023-01-01

Author

Ahmad, Mirza Nadeem
Farid, Muhammad Fayyaz
Nawaz, Faisal
Anjum, Muhammad Naveed
Qayyum, Muhammad Abdul
Hussain, Tajamal
Mujahid, Adnan
Shehzad, Khurram

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Antibacterial poly(2-chloroaniline)/zinc oxide nanocomposites (PoCA/ZnO NCs) were synthesized by chemical oxidative polymerization of 2-chloroaniline in the presence of ZnO nanoparticles (ZnO NPs). The colloidal method was employed to synthesize the ZnO NPs and further used to prepare the PoCA/ZnO NCs. The average particle size of ZnO NPs was determined to be around 68 nm by X-ray diffractometer using Scherer’s equation. The weight percentage of ZnO NPs to PoCA was varied to prepare the PoCA/ZnO NCs of different percentages (1–5%). Fourier transform infrared spectroscopy confirmed the structural aspects of PoCA/ZnO NCs, and scanning electron microscopic images showed the morphological features of nanocomposites. The optical properties were evaluated by ultraviolet–visible spectrophotometer. The UV–visible absorption of PoCA/ZnO NCs enhanced linearly with the increase in weight percentage of ZnO NPs. Moreover, the effect of ZnO NPs weight percentage on the antibacterial efficacy of PoCA/ZnO NCs was also investigated by the disc diffusion method against Escherichia coli and Bacillus subtilis. The bactericidal effect of PoCA/ZnO NCs was augmented with the increase in the weight percentage of ZnO NPs. The composites exhibited significant antibacterial inhibition zones against both gram-negative (5.1 mm) and gram-positive (5.0 mm) bacteria.

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https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=85173100870&origin=inward
https://hdl.handle.net/11511/105759

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Department of Physics, Article