聚氨酯基复合膜的制备及其光催化性能研究  

Preparation and Photocatalytic Properties of Polyurethane Based Composite Films

作　　者：陈武辉 周虎[1] CHEN Wu-hui;ZHOU Hu(College of Chemistry and Chemical Engineering,Hunan University of Science and Technology,Hunan Xiangtan 411201,China)

机构地区：[1]湖南科技大学化学化工学院,湖南湘潭411201

出　　处：《广州化工》2023年第1期104-107,151,共5页GuangZhou Chemical Industry

摘　　要：通过聚氨酯和丝素蛋白混合制备聚氨酯基复合膜,在复合膜上负载钨酸铋、钼酸铋、钛酸铋和钒酸铋四种铋的含氧酸盐。在可见光照射下,进行光催化降解实验,比较结果评价复合膜的光催化降解性能。通过自由基淬灭实验证明超氧自由基是起作用的主要自由基,回收光催化材料进行循环实验验证复合膜的稳定性。结果表明,负载钼酸铋的聚氨酯基复合膜的光催化降解性能优异,可回收利用,稳定性良好,有较高的应用价值。Polyurethane based composite membrane was prepared by mixing polyurethane and silk fibroin,and four kinds of bismuth oxysalts,bismuth tungstate,bismuth molybdate,bismuth titanate and bismuth vanadate,were loaded on the composite membrane.Photocatalytic degradation experiments were carried out under visible light irradiation,and the results were compared to evaluate the photocatalytic degradation performance of the composite films.The superoxide radical was proved to be the main free radical by radical quenching experiment,and the stability of the composite membrane was verified by recycling photocatalytic materials.The results showed that the polyurethane based composite membrane supported with bismuth molybdate had excellent photocatalytic degradation performance,recyclability,good stability and high application value.

关 键 词：聚氨酯基复合膜 光催化降解 稳定性 铋的含氧酸盐 

分 类 号：TQ317.4[化学工程—高聚物工业]