中文摘要：

采用一种可控的直接沉淀法制得纳米级ZnO材料。结果表明，在不同合成条件下得到的纳米ZnO颗粒具有不同的表面性质，并且对苯酚的降解表现出不同的催化效率。其中，在原料加料速度为3．0mL／min，前驱物煅烧温度为400℃时所得产物具有最高的催化活性。与单独臭氧化相比，加入该产物后，苯酚的降解率提高了85．38％。在优化的纳米ZnO存在的条件下，分别评估了臭氧的分解，叔丁醇对苯酚的臭氧化影响，表明在纳米ZnO存在时，苯酚直接被臭氧分子氧化而降解。

英文摘要：

Nano-sized ZnO materials were prepared by a controlled direct precipitation method. Nano-ZnO partieles prepared in different condition with different surface characteristics showed different catalytic effieiencies for phenol degradation. The degradation efficiency of phenol improved about 85.38% compared with ozonation alone, due to the introduction of optimized nano-ZnO samples, which were synthesized in following condition： the feeding speed was 3.0 mL/min, calcination temperature was 400℃. The decomposition of ozone and the effect oftert-butyl alcohol on ozonation of phenol in presence of optimized nano-ZnO were evaluated respectively. The results demonstrated that phenol was directly oxidized by ozone molecule in the presence ofnano-ZnO.