石墨烯／ZnO 处理头孢他啶模拟废水的工艺研究

摘要

Nano ZnO/graphene composites were prepared by the oxidation of graphite and nano ZnO as the precursors under the condition of water temperature at 120 ℃.The photo-catalytic activity of the composite was detected to treat simulated antibiotic wastewater by u-sing the solution of ceftazidime with 300 W xenon lamp light source .The optimal conditions for the degradation of the composite material were obtained by single factor test and orthogo -nal test.The optimized conditions were obtained as follows: the amount of catalyst was 25 mg, the time was 3.5 h, and the pH value was 6.The ratio of ZnO and graphene oxide was 15∶1.The degradation rate of the solution of ceftazidime could reach 95%.%以氧化石墨和纳米氧化锌作为前驱物，在120℃水热条件下制备了纳米氧化锌／石墨烯复合物，以头孢他啶溶液模拟抗生素废水，在300 W氙灯光源下，对复合材料光催化性能进行检测．分别做了单因素试验和正交试验，得到复合材料降解头孢他啶废水的最佳条件是，催化剂用量为25 mg，光照时间为3．5 h，pH值为6，ZnO与氧化石墨烯配比为15∶1，对头孢他啶溶液的降解率达到了95％．