We can't find the internet
Attempting to reconnect
Something went wrong!
Hang in there while we get back on track
Preparation of TiO2/Fe-MOF n‒n heterojunction photocatalysts for visible-light degradation of tetracycline hydrochloride
Summary
Researchers created a new photocatalyst by combining titanium dioxide with an iron-based metal-organic framework to break down the antibiotic tetracycline under visible light. The composite material achieved over 90% degradation of the antibiotic within two hours, significantly outperforming either component alone. The study demonstrates a promising approach for using light-activated materials to remove pharmaceutical pollutants from wastewater.
Visible-light-assisted photocatalysis has been recognized as an effective solution to the degradation of various pollutants including antibiotics, pesticides, herbicides, microplastics, and organic dyes. Herein, an n-n heterojunction TiO/Fe-MOF photocatalyst is reported, designed via solvothermal synthesis route. TiO/Fe-MOF photocatalyst was characterized by XPS, BET, EIS, EDS, DRS, PL, FTIR, XRD, TEM, SEM and HRTEM techniques. Inspired by XRD, FTIR, XPS, EDS, TEM, SEM, and HRTEM analyses, the successful synthesis of n-n heterojunction TiO/Fe-MOF photocatalysts was proved. The migration efficiency of the light-induced electron-hole pairs was confirmed by the PL and EIS tests. TiO/Fe-MOF exhibited a significant performance for tetracycline hydrochloride (TC) removal under visible light irradiation. TC removal efficiency for TiO/Fe-MOF (15%) nanocomposite reached 97% within 240 min, ca. 11 times higher than pure TiO. The photocatalytic enhancement of TiO/Fe-MOF could be attributed to the broadening the light response range, forming an n-n junction between Fe-MOF and TiO components, suppressing charge recombination. Based on recycling experiments, TiO/Fe-MOF had a good potential to be used in consecutive TC degradation tests.
Sign in to start a discussion.
More Papers Like This
Photocatalytic Degradation of Tetracycline by La-Fe Co-Doped SrTiO3/TiO2 Composites: Performance and Mechanism Study
Researchers developed a new composite material that can break down nearly all tetracycline antibiotic pollution in water using visible light. While focused on antibiotic removal rather than microplastics, the technology is relevant because microplastics commonly carry absorbed antibiotics in water environments. Advanced treatment methods that remove antibiotics could also help address the broader problem of microplastics acting as carriers for harmful chemicals in drinking water sources.
Construction of a Visible Light-Driven LaFeO3/Bi4Ti3O12 Heterojunction Photocatalyst Towards Removal of Tetracycline in Aquatic Environment
Researchers constructed a LaFeO3/Bi4Ti3O12 heterojunction photocatalyst and found it achieved 95% removal of tetracycline from water within 120 minutes under simulated sunlight, with a reaction rate constant 3.8 to 4.7 times higher than either pure component, driven by a narrowed bandgap of 2.24 eV enabling enhanced visible-light absorption.
Z-Type Heterojunction MnO2@g-C3N4 Photocatalyst-Activated Peroxymonosulfate for the Removal of Tetracycline Hydrochloride in Water
Researchers developed an advanced photocatalyst that degrades nearly 97% of tetracycline, a common antibiotic pollutant, in water within 180 minutes using light-activated chemical reactions. The system showed good stability for reuse and reduced the toxicity of breakdown products. While focused on antibiotic removal rather than microplastics, this water treatment technology is relevant because microplastics often carry adsorbed antibiotics, and removing both contaminants is important for safe drinking water.
Photocatalytic Degradation of Sulfamethoxazole and Enrofloxacin in Water Using Electrospun Composite Photocatalytic Membrane
Researchers prepared composite photocatalytic membranes by combining titanium dioxide and reduced graphene oxide with polymer nanofibers for degrading antibiotic contaminants in water. The study found that these electrospun membranes effectively broke down sulfamethoxazole and enrofloxacin under light exposure, offering a practical and reusable approach for removing emerging pharmaceutical pollutants from water sources.
Photocatalytic Degradation of Pharmaceutical Residues from Water and Sewage Effluent Using Different TiO2 Nanomaterials
This study tested different titanium dioxide nanostructures for breaking down pharmaceutical compounds in water using UV light. Researchers found that the most effective catalyst degraded drugs like propranolol and carbamazepine efficiently, and that natural organic matter in the water actually enhanced the treatment, suggesting practical applications for cleaning pharmaceutical residues from wastewater.