Transformation Mechanism Among Various Nano-Morphologies

摘要

Transformation phenomenon was initially found among elongated nanoparticles, oriented nanowhiskers, line-like nanobelts and nanotubes with certain wrapped angle of manganese oxide prepared via a microemulsion technique and heat treatment. The oriented growth model has been built up and discussed to explain the transformation mechanism from nanoparticles to nanowhiskers, nanobelts and nanotubes step by step. The size scale of the original nanoparticle takes an important role in the growth process and that of 50 nm is critical point to nanowhiskers growth in our experiment. The images of the transformation stage were recorded by TEM in succession.