Abstract
Branched Zn-doped SnO 2 nanorod clusters with tunable size and aspect ratios were prepared by a facile solvothermal process. The introduction of a small quantity of Zn 2+ proved to play an important role in directing the anisotropic growth of SnO 2 nanocrystals. The as-synthesized products exhibit tetragonal rutile structure and many lattice defects exist in the products. The possible growth mechanism has been proposed. These Zn-doped SnO 2 nanorods exhibited unique Raman spectrum in contrast with the undoped SnO 2 nanostructures. These Zn-doped SnO 2 nanorods showed good sensitivities to ethanol gas, acetone gas, and benzene gas.
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