Lakhasly

In the present work, microwave-assisted method is used to synthesize TiO2 nanoparticles from Wrightia tinctoria leaf extract.Furthermore, photocatalytic degradation of organic dyes (methyl blue and methyl orange) was studied under sunlight irradiation using synthesized nanoparticles.The synthesized nanoparticles were characterized by X-ray diffraction (XRD), high-resolution transmission electron microscopy (HR-TEM), DLS, ZE, FT-IR, Raman, PL and ultraviolet (UV)-visible studies.The XRD analysis confirmed that the catalyst is composed of anatase tetragonal TiO2 phase with crystallite size of 9.93 nm. The HR-TEM results show that the particles are in spherical shape with particle size of * 22 nm (TiO2 nanoparticles).The UV-Vis (Tauc plot) spectrum (2.52 eV) of the prepared TiO2 nanoparticles suggest that intrinsic band gap absorption of TiO2 and electron transition is from the valence band to conduction band.In addition, the synthesized TiO2 nanoparticles were tested at various concentrations and these results revealed potential antibacterial activities.

In the present work, microwave-assisted method is used to synthesize TiO2
nanoparticles from Wrightia tinctoria leaf extract. The synthesized nanoparticles
were characterized by X-ray diffraction (XRD), high-resolution transmission
electron microscopy (HR-TEM), DLS, ZE, FT-IR, Raman, PL and ultraviolet
(UV)–visible studies. The XRD analysis confirmed that the catalyst is composed
of anatase tetragonal TiO2 phase with crystallite size of 9.93 nm. The HR-TEM
results show that the particles are in spherical shape with particle size of *
22 nm (TiO2 nanoparticles). The UV–Vis (Tauc plot) spectrum (2.52 eV) of the
prepared TiO2 nanoparticles suggest that intrinsic band gap absorption of TiO2
and electron transition is from the valence band to conduction band. Furthermore, photocatalytic degradation of organic dyes (methyl blue and methyl
orange) was studied under sunlight irradiation using synthesized nanoparticles.
The synthesized nanoparticles results show 99% degradation activity as in the
case of methyl orange dye compared to methyl blue dye (97%) at 90 min. TiO2
nanoparticles synthesized using W. tinctoria leaf extract have been found to
exhibit more enhanced photocatalyst degradation of organic dyes as compared
to other leaf extracts. In addition, the synthesized TiO2 nanoparticles were tested
at various concentrations and these results revealed potential antibacterial
activities. Antioxidant activity carried out using DPPH free radical scavenging
assay revealed lower IC50 lg/mL value 53.64 for the synthesized TiO2
nanoparticles, respectively. The present work further suggests that it is an effort