Researchers at Vellore Institute of Technology have developed a polymer membrane that removes the antibiotic ciprofloxacin from water. The membrane uses PVDF, carbon quantum dots, and titanium dioxide. Under low-cost UVA lamps, it removed 74.4% of ciprofloxacin in lab tests and kept working across five reuse cycles. The design combines adsorption and photocatalysis. Carbon dots and titanium dioxide sit inside electrospun PVDF fibers, so the catalyst is not lost in the water. The authors say the approach could fit into existing filtration infrastructure, though real wastewater contains other contaminants that need testing. This matters because antibiotic residues in rivers and lakes contribute to resistant bacteria. The study is early stage, but it points to a practical way to tackle pharmaceutical pollution without expensive UV systems or catalyst recovery steps.
