Green synthesis of TiO2 bionanocomposite using waste leaves of water hyacinth: Application in antibacterial activity of toilet bacteria Serratia marcescens.

[Display omitted] • Synthesis of TiO 2 bionanocomposite from water hyacinth (WH) leaves extract. • Antibacterial activity of TiO 2 bionanocomposite against S. marcescens ABHI001. • Superior antibacterial activity of TiO 2 bionanocomposite compared to TiO 2 NPs. • Low-cost green synthesis strategy for practical applications of bionanocomposite. The present work is targeted towards the green synthesis of low cost, efficient and potential nanoparticles for effective application. In this approach, waste leafs of water hyacinth (WH) [ Eichhornia crassipes ] , a types of aquatic weed has been used to synthesize TiO 2 bionanocomposite under ambient conditions. Newly synthesized TiO 2 bionanocomposite has been characterized via different techniques e.g. X-ray diffraction (XRD), fourier-transform infrared spectroscopy (FT-IR) spectroscopy, and field emission scanning electron microscope (FE-SEM). Further, antibacterial efficiency of TiO 2 bionaocomposite has been tested against the commonly known toilet bacteria Serratia marcescens which is a lab isolated strain having specification ABHI001. It is found that the prepared TiO 2 bionanocomposite when used at 150 μg/mL concentration exhibited ∼3.0 cm diameter of inhibition zone against the toilet bacteria which is superior to commercial TiO 2 NPs and WH leaf extract. The current study may have potential applications to synthesize bionanocomposites and their utility in healthcare industries. [ABSTRACT FROM AUTHOR]