聚酰亚胺纳米金属氧化物复合薄膜的制备及性能研究

发布时间：2018-04-02 19:20

  本文选题：聚酰亚胺　切入点：离子交换　出处：《北京服装学院》2016年硕士论文

【摘要】：本文采用离子交换方法制备掺杂金属氧化物的聚酰亚胺复合薄膜,利用XRF、XRD、SEM、TG等测试方法对其进行表征和分析,并以亚甲基蓝为目标降解物考察其光催化活性,研究了金属掺杂量以及热处理温度、时间对薄膜光催化性能的影响。结果表明:(1)Sn2+和Zn2+的物质的量比为4:1、总离子浓度为0.3mol/L、热处理410℃,热处理4h时制得的复合薄膜对亚甲基蓝光催化降解效率最高为96%。(2)Sn2+和Cr3+的物质的量比为1:9、总离子浓度为0.1mol/L、热处理480℃,热处理4h,亚甲基蓝的降解效率为95%。(3)当KOH(4mol/L)刻蚀时间为0.5h,Ce3+离子浓度为0.5mol/L,热处理温度为480℃,热处理4h时,其光催化效率最高,亚甲基蓝降解率可达95.5%。(4)当KOH(4mol/L)刻蚀时间为3h,Ce3+与Fe3+浓度比为3:7时,总离子溶度为0.25mol/L,热处理温度为440℃并处理4h时,其光催化降解亚甲基蓝溶液的效率可达93%。(5)Cu2+离子溶度为0.4mol/L,热处理温度为440℃并且热处理3h时,其光催化活性最高,亚甲基蓝降解率可达96%。
[Abstract]:In this paper, polyimide composite films doped with metal oxides were prepared by ion exchange method. The films were characterized and analyzed by XRF- XRDX SEMTG, and their photocatalytic activity was investigated with methylene blue as the target degradation material.The effects of metal doping amount, heat treatment temperature and time on the photocatalytic properties of the films were studied.The results show that the mass ratio of Sn2 to Zn2 is 4: 1, the total ion concentration is 0.3 mol / L, and the heat treatment is 410 鈩，

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