Binary Antibiotics Degradation Employing an Efficient Direct Z-Scheme Ti(VI)-Salen Complex Loaded on Dendritic Fibrous Nano-Silica

Enhanced Photocatalytic Degradation of Tetracycline-Class Pollutants in Water Using a Dendritic Mesoporous Silica Nanocomposite Modified with UiO-66

“…Doxycycline (DOX) and tetracycline (TTC) are two kinds of TTCs that are among the largest groups of antibiotics widely used in agriculture and as growth promoters in livestock farming, leading to water pollution and the emergence of antibiotic resistance genes . A variety of methods, including sedimentation, ion exchange, reverse osmosis, , electrochemistry, , membrane separation, photodegradation, – biodegradation, and adsorption, have been employed for the treatment of wastewater containing DOX and TTC. Among them, adsorption and photodegradation are the most proper approaches for isolating these TTC-class pollutants from water resources. , However, in the adsorption method, the adsorbents will be contaminated after the process, and various integration schemes are needed to isolate TTC-class pollutants effectively.…”

“…55 Even though DFNS and UiO-66 alone have relatively wide band gap energies, i.e., 4.04 and 3.60 eV, respectively, 24,29,55,56 the proposed UiO-66@NH 2 -DFNS appears to have a narrower band gap, thus can utilize effective photodegradation response under lower energy radiation. 24,29,55,56 Specific surface area and pore dimensions of UiO-66@NH 2 -DFNS were specified by employing a nitrogen adsorption/ desorption isotherm (Figure 5a). The UiO-66@NH 2 -DFNS exhibit type IV isotherms, indicating a typical mesoporous structure, with unlimited monolayer-multilayer adsorption for nitrogen adsorption at 77 K (Figure 5a).…”

“…The band gap energy can be calculated by extrapolating the linear section of the (αhυ) m with a horizontal axis hυ plot (Figure 4), as E g = 3.36 eV. 55 Even though DFNS and UiO-66 alone have relatively wide band gap energies, i.e., 4.04 and 3.60 eV, respectively, 24,29,55,56 the proposed UiO-66@NH 2 -DFNS appears to have a narrower band gap, thus can utilize effective photodegradation response under lower energy radiation. 24,29,55,56 Specific surface area and pore dimensions of UiO-66@NH 2 -DFNS were specified by employing a nitrogen adsorption/ desorption isotherm (Figure 5a).…”

“…Synthesis of UiO-66@NH 2 -DFNS. The DFNS sample was prepared using the hydrothermal approach: 48,51 The method of compound synthesis is described in a study by Deymeh et al 24 UiO-66 was synthesized through a solvothermal method: 29 Initially, a 100 mL Schott bottle was filled with 10 mL of DMF, followed by the dissolution of 0.7 g of terephthalic acid and 0.5 g of ZrCl 4 at 80 °C for 30 min. The solution was clarified in an ultrasonic bath and then transferred to a stainless-steel Teflon-lined autoclave, which was placed in an oven at 120 °C for 24 h. After cooling, the sample underwent three centrifugation cycles with DMF to eliminate any residual reactants, followed by additional cycles with absolute methanol to remove DMF.…”