Low‐cost nano‐TiO₂ composites for remediation of textile dyes: Appraisal on the effect of solar and ultraviolet irradiations

Abstract

The study evaluates the azo dye degradation potential of nano‐TiO2; its composites with low‐cost substrates in the form of powder and encapsulated bead for two widely used azo dyes, methyl orange (MO) and congo red (CR) under solar and ultraviolet (UV) irradiation. Degradation potential varied according to the dye concentration, chemistry of dye, light source, and the formulation of the photocatalyst. Both the dyes were completely decolorized at 100 mg/L concentration and to some extent at 1,000 mg/L concentration. The activated charcoal‐titanium dioxide (AC‐TiO2) nanocomposite in the presence of solar radiations proved to be an economic and efficient substrate for degradation of the test dyes exhibiting combined action of adsorption and photocatalytic phenomena.

Elucidating the effect of TiO2 nanoparticles on mung bean rhizobia via in vitro assay: Influence on growth, morphology, and plant growth promoting traits

“…The TiO 2 NPs were synthesized by following the wet chemical method given by Kaur and Kalia [41] with titanium isopropoxide as the precursor compound. Titanium isopropoxide (10 mL, 98% v/v) was added to ethanol/water solution (7:1 v/v) drop‐by‐drop with constant stirring.…”