Tetrapod-like ZnO nanostructures were synthesized by thermal evaporation at 700 ℃ under air ambient using zinc and carbon power.Carbon powder can be used as catalyst but it needn′t to be removed from products,and CO/CO2 plays a role of transport gas.Scan electron microscopy(SEM) results indicate that ZnO tetrapod has a sharp tip on each tetrapod with the diameter of 50 nm.X-ray diffraction(XRD) and micro-Raman spectra reveal that ZnO tetrapod has a high pure hexagonal wurtzite structure.Photolum...