生物模板法制备铜-锌复合氧化物纳米材料及其降解抗生素性能研究

Study on the Preparation of Zinc-Copper Composite Oxide Nanomaterials using Biological Template Method and the Properties of Antibiotic Degradation

采用海藻酸钠作为生物模板,通过金属离子与其交联制备不同比例的铜-锌复合氧化物纳米材料。该方法可以将金属离子前驱体在反应体系中充分分散并均匀混合,最终得到具有典型六方纤锌矿结构的纳米材料。制备得到的铜-锌复合氧化物纳米材料可以有效降解不同类型的抗生素,其中纯ZnO纳米材料降解磺胺嘧啶效率为85.4%,掺入3%的CuO后,降解磺胺嘧啶效率最高达93.4%,与ZnO纳米材料相比复合氧化物的光催化活性有了明显提高;但对于四环素,纯ZnO纳米材料对它的降解效果要优于铜-锌的复合氧化物纳米材料,降解效率最高达84.7%。

Sodium alginate was used as a biomaterial to prepare the composite oxide nanomaterials of copper zinc alloy by different proportions of metal ions and their crosslinking.In this method,metal ion precursor can be dispersed and mixed evenly in the reaction system,and nanomaterials with typical hexagonal wurtzite structure can be obtained.The composite oxide nanomaterials of copper decoration zinc can effectively degrade different types of antibiotics.Among them,the efficiency of sulfadiazine degradation by pure ZnO nanomaterials is 85.4%.After adding 3% CuO,the efficiency of sulfadiazine degradation is as high as 93.4%.Compared with tetracycline,the degradation efficiency of ZnO nanomaterials was higher than that of compound oxide nanomaterials of trifolium thunb zinc,and the degradation efficiency was up to 84.7%.