冶金高锌尘泥制备ZnO-ZnFe_2O_4复合光催化剂降解苯酚  

Preparation of ZnO /ZnFe_2O_4 Composite from High Grade Zinc-bearing Dust for Photodegradation of Phenol

作　　者：黄伟[1] 吴照金[1] 

机构地区：[1]安徽工业大学教育部冶金减排与资源综合利用重点实验室,安徽马鞍山243002

出　　处：《矿产综合利用》2014年第3期64-68,共5页Multipurpose Utilization of Mineral Resources

摘　　要：利用冶金固体废弃物高锌尘泥制备了ZnO-ZnFe2O4纳米级复合光催化剂,通过对苯酚的降解实验,研究了该材料在可见光下的光催化效果。与用纯试剂制备的ZnO相比较,发现用高锌尘泥制备的ZnO-ZnFe2O4复合材料在可见光下的光催化活性明显优于纯ZnO,二者分别参与的降解过程都符合一级反应动力学模型.尘泥制备产物的高催化活性主要得益于:ZnFe2O4与ZnO的结合,有效抑制了光生电子/空穴对的复合,同时显著细化了晶粒。The synthesis of ZnO-ZnFe2O4 composite nanopowder from a metallurgical waste zinc-beating dust and its photocatalytic activity in the photodegradation of phenol under visible light irradiation is proposed. In comparison of ZnO nanopowder,the ZnO-ZnFe2O4 nanopowder exhibits more prominent visible light photocatalytic activity. Such enhancements may be ascribed to that the combination of ZnO with ZnFe2O4 could lead to a block to the recombina- tion of photoinduced electrons and holes on the catalyst surface, and an obvious grain refinement.

关 键 词：高锌尘泥 循环利用 复合材料 光催化降解 苯酚 

分 类 号：TD989[矿业工程—选矿] TF09[冶金工程—冶金物理化学]