Abstract: 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.

Key words: SnO₂ nanorods, microemulsion, molten salt synthesis method, nucleation and growth process