Antibacterial activity of green fabricated silver-doped titanates

Objectives. The study aimed to synthesize the multifunctional materials silver-added titanates via reduction of sol-gel fabricating titanates (Fe₂TiO₅ and NiTiO₃) with Jasminium subtriplinerve Blume leaf extract.
Methods. The physicochemical characteristics of the obtained materials were determined by X-ray diffraction, energy dispersive X-Ray spectroscopy, Raman spectroscopy, Brunauer–Emmett–Teller specific surface area, scanning electron microscopy, and UV–Vis absorption spectroscopy.
Results. The results demonstrated good dispersion of silver on the surface of Fe₂TiO₅ and NiTiO₃ to create photocatalysts with two light-absorbing regions. The obtained materials were applied as antibacterial agents in polluted water. The Ag–Fe₂TiO₅ (Ag–FTO) samples showed better properties and antibacterial activity than Ag–NiTiO₃ (Ag–NTO) due to the better dispersion of silver nanoparticles on the FTO surface. Besides, the antibacterial results exhibit increased inhibiting activity against gram-negative (−) bacteria as compared with gram-positive (+) bacteria.
Conclusions. Nanomaterials Fe₂TiO₅ and NiTiO₃ added Ag were successfully synthesized. These materials showed excellent inhibition against Baccilus cereus, Escherichia coli, Pseudomonas aeruginosa, Salmonella typhi, and Staphylococcus aureus. Additionally, the Ag–Fe₂TiO₅ samples showed much better antibacterial activity than the Ag–NiTiO₃ sample.

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