Abstract: Different preparation methods as well as respective advantages and disadvantages thereof of nanometer zinc oxide were summarized.According to the natural state of raw materials,the methods can be classified solid phase,liquid phase,and gas phase.Based on the difference of preparation and synthesis process,liquid phase method can be classified hyrothermal systhesis method,sol-gel method,microemulsion method,and precipitation method etc..Applications of nanometer zinc oxide in different fields were introduced in detail,such as antibacterial deodorant,disinfectant and anti-UV products;catalysts and photocatalysts;and gas sensors and piezoelectric materials etc.. Meanwhile,some existing problems and viewpoints about future application research as well as the future development direction of nanometer zinc oxide were pointed out.

Key words: nanometer zinc oxide, solid phase method, liquid phase method