Non-biodegradable synthetic pollutants continue to cause significant water pollution worldwide, harming aquatic ecosystems and human health. Ongoing industrial discharge of water-soluble pollutants further intensifies this issue. Environmentally friendly photoactive conductive materials present promising options for photodegrading these contaminants. This study demonstrates the effective photodegradation of synthetic methylene blue (MB) using a tetragonal phase BaTiO 3 (BT) photocatalyst with a band gap of approximately 2.9 eV. The mesoporous BT, featuring a high BET surface area of about 100 m 2 /g (relative N 2 pressure of 0.7), is synthesized through a straightforward one-pot hydrothermal process, producing nearly uniform spherical nanoparticles with a stoichiometric Ba-to-Ti ratio. Comprehensive characterization is performed using X-ray diffraction (XRD), Raman spectroscopy, scanning electron microscopy (SEM), energy dispersive X-ray spectroscopy (EDX), UV-visible (UV-vis) spectroscopy, and nitrogen (N 2 ) adsorption–desorption analysis at 77 K. The isoelectric point is determined to be 6.75 (pH) using the solid addition method. Under 250 W UV-vis light, 2.5 mg of BT powder degrades 90% of a 25-ppm MB dye solution (25 ml, pH = 6.8) within 180 minutes. Due to its enhanced textural and morphological properties, BT may also show superior photocatalytic activity against other water-soluble toxic and carcinogenic synthetic drugs and industrial compounds.
Rani et al. (Sat,) studied this question.
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