Green synthesis of zinc oxide nanoparticles using Citrus sinensis extract

This work addresses a low cost, non-toxic green synthesis of zinc oxide nanoparticles prepared using different amounts of Citrus sinensis extract. The zinc oxide nanoparticles presented the Zn-O bond at 618 cm(-1), a crystalline growth in a purely hexagonal wurtzite crystal structure, and different size and shape homogeneity depending on the amount of extract used. The band gap of the ZnO was at around 2.91 eV for all samples. The photocatalytic degradation studies were carried out using methylene blue with the zinc oxide nanoparticles under UV light; where sample M2 presented a degradation of around 83% at 120 min. These results presented a better degradation rate than commercially available zinc oxide nanoparticles.