Poly(Styrene Sulfonate)/Poly(Allylamine Hydrochloride) Encapsulation of TiO 2 Nanoparticles Boosts Their Toxic and Repellent Activity Against Zika Virus Mosquito Vectors

摘要: Green fabricated nanoparticles often need to be encapsulated and stabilized, ensure uniform dispersion in the aquatic environment relevant larvicidal activity over time. However, recent research showed that nanoencapsulation processes led a reduction of nanoparticle efficacy. We used an extract Argemone mexicana reduce TiO2 nanoparticles, which were then capped with PSS/PAH (poly(styrene sulfonate)/poly(allylamine hydrochloride)). The toxic repellent potential compared elucidate their effects against Zika virus vector Aedes aegypti. Nanoparticles characterized by biophysical methods including UV–Vis, EDX FTIR spectroscopy, SEM, TEM, XRD DLS analyses. In pupicidal experiments, achieved LC90 values from 41.648 (larva I), 71.74 ppm (pupa). Nanoencapsulated 39.16 (I), 69.12 ppm adulticidal on Ae. aegypti was 10.31 ppm, while nanoencapsulated 9.54 ppm. At 10 ppm, repellency towards 80.43% for 88.04% TiO2. This firstly highlighted promising encapsulation, leading production highly effective titania nanostructures, if synthesized eco-friendly routes without further stabilization.