Abstract
The coupling of silver (Ag) and iron oxide (Fe3O4) NPs and their interaction when incorporated in collagen (C)-based nanobiocomposite (NBC) have not been documented. The present investigation reports a simple and novel method for the development of magnetized antibacterial collagen-based NBC from biowaste that contains Ag–Fe3O4 NPs incorporated into the collagen matrix, which acts as reinforcement and also provides enhanced antibacterial effects for biomedical applications. Synthesized AgNPs were ascertained by UV–vis spectra. Characterization of Ag–Fe3O4 NPs was carried out using SEM, TEM, zeta potential, XRD, PSA, DSC, TGA, VSM and FTIR techniques. The particle size was found to be in the range 25–120 nm and the conjugated NPs showed less aggregation, as observed by SEM and TEM techniques. VSM results indicated the presence of magnetic property in Ag–Fe3O4 NPs, and thus, it can be isolated from medium and hence can be effectively used as a strategy for water purification. The results indicated enhanced antibacterial efficacy for C–Ag–Fe3O4 NBC where the Ag–Fe3O4 NPs inhibited the growth of E. coli (21.6 ± 1.3 mm) better than gram-positive species, S. aureus, which showed 18.7 ± 1.4 mm inhibition zone. Furthermore, C–Ag–Fe3O4 NBC showed enhanced thermal stability and tensile strength of 3.31 ± 0.43 MPa. The novelty of this study is that the fabricated magnetized antibacterial NBCs offer a quick, easy and clean way to recycle CCLW by producing eco-friendly materials. In addition, in vitro tests show that they are biocompatible and appropriate for tissue-engineered applications. The study demonstrates C–Ag–Fe3O4 NBC developed from biological waste with sustained efforts suitable for biological and biomedical applications.
Graphical abstract
Fabrication of C-Ag-Fe3O4 NBC from biowaste for biomedical application
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The author Dr. Abhishek Mandal is grateful to Prof. and Head Dr. E. Murugan, Dept. of Physical Chemistry, University of Madras for constant encouragement and fruitful discussions.
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Mandal, A., Dhineshkumar, E. & Sastry, T.P. The CCLW collagen biocomposite consisting Ag–Fe3O4 nanoparticles as a novel biomaterial with a view to facile green approach. Clean Techn Environ Policy 25, 3285–3302 (2023). https://doi.org/10.1007/s10098-023-02578-0
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DOI: https://doi.org/10.1007/s10098-023-02578-0