Green Synthesis of Zinc Oxide Nanoparticles Using Neem Extract

The present work reports the synthesis and characterization of zinc oxide (ZnO) nanoparticles by using green synthesis method. This method provides an unconventional and fresh approach which shows that it is a reliable, non-toxic, environmental friendly and a low cost method. Different parts of neem tree such as leaves, bark, twigs and fruits are used for synthesis ZnO nanoparticles mainly by two methods: one by soaking and another by boiling. The synthesized nanoparticles are then characterized by using (X-ray diffraction) XRD technique and it is found that the size of particles vary from 16 nm to 31 nm. Also, the synthesized nanoparticles exhibit crystalline nature. This method offers a biological technique to synthesize ZnO nanoparticles in controlled and precise manner with well- defined diverse sizes and shapes. This study also suggests that green synthesized method can be used as an alternative to the existing chemical and physical methods.