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<p>Cationic Blue GRL, BB 41&#xa0;dye, caused more toxic&#xa0;harm to sewage when it was utilized to dye and print textiles. Dopant (TiO<sub>2</sub> doped with Ag) nano-specimens were prepared with different Ag (0.01, 0.03, 0.05, and 0.07&#xa0;mol%) by effectively utilizing a preliminary humid impregnation. The diffuse reflectance spectroscopy spectrum's surface plasmon resonance feature confirmed that the amount of Ti<sup>4+</sup> and Ag<sup>+</sup> charged particles was significantly diminished. The undoped TiO<sub>2</sub> and TiO<sub>2</sub> doped with Ag nanoparticles characterized by Scanning electron microscope (SEM), Transmission electron microscope (TEM), High-resolution transmission electron microscope (HRTEM), Energy Dispersive X-ray (EDX), X-ray diffraction (XRD), Nitrogen (N<sub>2</sub>) adsorption–desorption evaluates, and the band gap structure (GGA + U calculations). Several impacts encompassing pH, duration of contact, original BB 41 instances, the level of H<sub>2</sub>O<sub>2</sub>, temperatures, light intensities, and the amount of TiO<sub>2</sub> doped with Ag nanomaterial photocatalyst influence the photodegradation efficiency percent and the rate of degradation for BB 41. The kinetics of adsorption developed as four rates (Pseudo-first, Pseudo-second, Intra-particle diffusion, and Elovich)&#xa0;at various original BB 41 instances were investigated. Compared to these calculations, Pseudo-first was more effective, indicating a potential physisorption mechanism for the adsorption. The adsorption developed by the three isotherms examined (Langmuir, Freundlich, and Temkin)&#xa0;for the BB 41 adsorption. Compared to these calculations, Langmuir's equation matched more effectively. The disc diffusion test was used to measure the antimicrobial activity of undoped TiO<sub>2</sub> and various amounts of Ag-doped TiO<sub>2</sub> nanoparticles. These bacteria included a pair of gram-positive (Bacillus subtilis and Staphylococcus aureus) and one gram-negative (Escherichia coli). Furthermore, the reusability and regeneration of Ag-doped TiO<sub>2</sub> nanoparticles&#xa0;under ultraviolet (UV) radiation were demonstrated.</p> Graphical abstract <p></p>

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Nanoparticles TiO2 doped with Ag for Cationic Blue GRL sewage photocatalysis color disposal

  • 期刊论文

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  • 发表日期：

    2025年9月2日

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  • Gamalat Mahmoud

摘要

Cationic Blue GRL, BB 41 dye, caused more toxic harm to sewage when it was utilized to dye and print textiles. Dopant (TiO2 doped with Ag) nano-specimens were prepared with different Ag (0.01, 0.03, 0.05, and 0.07 mol%) by effectively utilizing a preliminary humid impregnation. The diffuse reflectance spectroscopy spectrum's surface plasmon resonance feature confirmed that the amount of Ti4+ and Ag+ charged particles was significantly diminished. The undoped TiO2 and TiO2 doped with Ag nanoparticles characterized by Scanning electron microscope (SEM), Transmission electron microscope (TEM), High-resolution transmission electron microscope (HRTEM), Energy Dispersive X-ray (EDX), X-ray diffraction (XRD), Nitrogen (N2) adsorption–desorption evaluates, and the band gap structure (GGA + U calculations). Several impacts encompassing pH, duration of contact, original BB 41 instances, the level of H2O2, temperatures, light intensities, and the amount of TiO2 doped with Ag nanomaterial photocatalyst influence the photodegradation efficiency percent and the rate of degradation for BB 41. The kinetics of adsorption developed as four rates (Pseudo-first, Pseudo-second, Intra-particle diffusion, and Elovich) at various original BB 41 instances were investigated. Compared to these calculations, Pseudo-first was more effective, indicating a potential physisorption mechanism for the adsorption. The adsorption developed by the three isotherms examined (Langmuir, Freundlich, and Temkin) for the BB 41 adsorption. Compared to these calculations, Langmuir's equation matched more effectively. The disc diffusion test was used to measure the antimicrobial activity of undoped TiO2 and various amounts of Ag-doped TiO2 nanoparticles. These bacteria included a pair of gram-positive (Bacillus subtilis and Staphylococcus aureus) and one gram-negative (Escherichia coli). Furthermore, the reusability and regeneration of Ag-doped TiO2 nanoparticles under ultraviolet (UV) radiation were demonstrated.

Graphical abstract