A Coronopus didymus based eco-benign synthesis of Titanium dioxide nanoparticles (TiO2 NPs) with enhanced photocatalytic and biomedical applications

Synthesis, characterization, photocatalytic and biomedical applications of TiO2 NPs. [Display omitted] •An Eco-benign synthesis of novel TiO2 nanoparticles using Coronopus didymus leaf extract as reducing and capping agent.•TiO2 nanoparticles have efficient photocatalytic activity in terms of photocatalytic degradation of methylene Orange (MO) and methylene blue (MB) dyes.•TiO2 nanoparticles has significant antibacterial activity against multidrug resistantbacteria (i.e. S. aureus and E. coli).•Toxicity against Red Blood Cells. Clean water is a global challenge and several conventional procedures are accompanied with a number of drawbacks. As a result, new materials and methods must be introduced to address the issue of water purification. The current study presents a green as well as facile approach for synthesizing TiO2 NPs using leaf extract Coronopus didymus for the first time, which could be used as a photocatalysts. Different microscopic and spectroscopic techniques including UV–Vis, FT-IR, XRD, HRTEM, DLS, BET, SEM, SAED and EDX were used to confirm the formation, size, shape, and crystalline structure of the biosynthesized TiO2 NPs. The as synthesized TiO2 NPs were examined for the photocatalytic degradation of methyl orange (MO) and methylene blue (MB) dyes. The results showed that biogenic TiO2 NPs exhibited remarkable photocatalytic degradation efficiency towards MO (95%) and MB (90%) only in 30 min of irradiations respectively. The biomediated TiO2 NPs were also screened for bacterial inhibition efficiency against S. aureus and E. coli bacteria. The cytotoxicity study revealed that TiO2 NPs are nontoxic to ordinary healthy RBCs. These exceptional antibacterial and photocatalytic activities may be due to their nanosize and wide ranging surface area of TiO2 NPs.