摘要
以电纺纤维PAA-PVA-SiW_(12)为底物,采用层接层自组装技术制备Ag-(PEI)_n(SiW_(12))_n纳米复合膜,采用傅里叶变换红外光谱、扫描电镜、透射电镜、元素分析和紫外漫反射测试技术对其结构进行了表征,考察了在可见光照射下对罗丹明B的降解催化活性和重复使用性能。结果表明,Ag-(PEI)_2(SiW_(12))_2薄膜使罗丹明B的降解率为94%,Ag-(PEI)_4(SiW_(12))_4和Ag-(PEI)_8(SiW_(12))_82种薄膜分别使染料的降解率为70%和61%。随着接层数目的增多,光催化活性降低。催化活性较高的Ag-[PEI]_2[SiW_(12)]_2薄膜被重复使用5次后,对染料的降解率仍可达到90%。
The Ag-（PEI）n（SiW12）n multilayer membrane was prepared by layer-by-layer （LBL） self-assembly technique with electrospun PAA-PVA-SiW12 fiber substrate. The structure of Ag-（PEI）n（SiW12）n composite membrane was characterized by fourier transformation infi＇ared spectroscopy, scanning electron microscope, transmission electron microscopy, inductively coupled plasma mass spectroscopy and ultraviolet-visible diffuse reflectance spectroscopy, and photocatalytic activity and reusability for Rhodamine 13 degradation under visible illumination was discussed. The results showed that, degradation of Rhodamine B was 94% by Ag-（PEI）2（SiW12）2 membrane, and the degradation rate of dye was.70% and 61% by Ag-（PEI）4（SiW12）4 and Ag-（PEI）8（SiW12）8 membrane, respectively. The photocatalytic activity decreased with the increase of the number of layers. The degradation rate of dye was still 90%, after the higher photocatalytic Ag-（PEI）2（SiW12）2 membrane was reused for the five times.
出处
《水处理技术》
CAS
CSCD
北大核心
2017年第12期78-82,共5页
Technology of Water Treatment
基金
吉林省大学生创新创业训练计划(2016-B312)
吉林市科技创新发展计划项目(20166030)
吉林省科技厅项目(20150101131JC)
