The ZnO nanopowders prepared by using the two methods possess higher sensitivities to ethanol and gasoline, and the ZnO nanopowders doped with Pt or Pd can enhance their selectivities to ethonal and gasoline, respectively.

• 两种方法制备的纳米ZnO粉体皆对酒精和汽油具有较高灵敏度; 掺杂Pt或Pd可提高纳米ZnO对酒精和汽油的选择性.