Novel photodegradable insecticide W/TiO2/Avermectin nanocomposites obtained by polyelectrolytes assembly

▶ W/TiO2 has been constructed for photocatalytic degradation and mineralization of the AVM microcapsules. ▶ The in vitro release experiments revealed that the polyelectrolytes prolonged the release time of the encapsulated AVM microcrystals. ▶ The sample which was prepared at 120 °C with 4.0 mol% W-doped amount had the highest photocatalytic activity. ▶ Toxicity of the novel photodegradable insecticide was higher in the adult stage compared to the 95% AVM as indicated by the lower LC50 value. ▶ According to the studies, a model has been successfully established for the prediction of W/TiO2/AVM-(CHI/ALG) microcapsules process with any kinds of insecticides.