Synthesis and Characterization of SnO_2 Nanorods

SnO2 nanorods with the rutile structure were prepared by annealing precursor powders , which were produced by mixing three kinds of microemulsions (NP5 , NP9, OP and cyclohexane with the volume ratio 1:1:1:2) in the presence of salts such as SnCl4 , Na2CO3, NaCl respectively. The structure and morphology of SnO2 nanorods were investigated by transmission electron microscopy (TEM), selected area electron diffraction (SAED) and X-ray diffraction. The results showed that the diameter and length of the as-prepared nanorods were 30-90nm and several micrometers respectively. The nanorods were perfect crystals. The mechanism of the formation of SnO2 nanorod was simply discussed in terms of the nucleation and growth process.