<p>➀ Researchers have introduced a method for fabricating sustainable triboelectric nanogenerators (TENGs) using recycled materials; </p><p>➁ The method combines recycled polyethylene terephthalate (PET) with nylon and titanium dioxide nanoparticles (TiO2 NPs) to enhance performance; </p><p>➂ The study demonstrates improved energy output, mechanical strength, and thermal stability, making the nanofiber-based TENGs suitable for applications in wearable electronics and self-powered sensors.</p>