ZnS/DFHMA-co-MAA纤维复合材料的制备及光催化性能研究  

Preparation and Photocatalytic Properties of ZnS/DFHMA-co-MAA Nanofiber Composites

作　　者：范文娟[1] 常会[1] 邹敏[1] 蒋志强[1] 

机构地区：[1]攀枝花学院生物与化学工程学院,四川攀枝花617000

出　　处：《高校化学工程学报》2016年第3期709-715,共7页Journal of Chemical Engineering of Chinese Universities

基　　金：四川省科技计划项目(2014GZ0030);太阳能技术集成及应用推广四川省高校生点实验室项目(2013TYNZ-08);攀枝花学院校级项目(2013YB21)

摘　　要：使用静电纺丝的方法制备了羧基含氟聚合物(DFHMA-co-MAA)纳米纤维毡,以该纤维毡为载体,采用水热法在不同的反应时间下制备了ZnS/DFHMA-co-MAA纤维复合材料。利用扫描电镜(SEM)和全自动比表面积测试仪分析了水热反应时间对复合材料形貌和比表面积的影响,表明反应时间为8 h制备的复合材料中ZnS的粒径最优,分布最均匀,比表面积最大;再利用X射线衍射仪(XRD)、紫外可见光谱仪(UV-VIS)对复合材料的理化性能进行了表征;通过紫外降解实验与红外光谱分析表明制备的ZnS/DFHMA-co-MAA纤维复合材料具有很好的耐紫外光降解性能,X射线光电子能谱分析显示复合材料中ZnS与DFHMA-co-MAA纤维之间产生了配位作用,热失重分析表明复合材料中ZnS的含量约为31.7%。光催化降解亚甲基蓝实验表明:在紫外光辐照180 min后,复合材料对亚甲基蓝的降解率为99.68%,较相同条件下纯粉体高出45.6%;循环光催化7次,复合材料仍表现出很高的光催化活性,说明其具有良好的重复光催化稳定性。Carboxylic fluorocarbon polymer（DFHMA-co-MAA） mats produced by electrospining were used as carriers to prepare ZnS/DFHMA-co-MAA nanofiber composites by hydrothermal methods under different reaction times. The influence of reaction time on morphology and specific surface area was investigated by Scanning electron microscope（SEM） and specific surface area tester, and the result indicate that ZnS has optimum diameter, best uniform particle distribution and largest surface area when the reaction time is 8 hours. The physicochemical properties of the composites were characterized by X-ray diffraction（XRD） and Ultraviolet visible spectrometer（UV-Vis）. Photodegradation and FT-IR analysis indicate that the ZnS/DFHMA-co-MAA fiber composites have good stability under UV irradiation, and X-ray photoelectron spectroscopy（XPS） result reveals that coordination interaction exists between ZnS and DFHMA-co-MAA fiber. Thermogravimetic analysis（TGA） shows that ZnS content of the ZnS/DFHMA-co-MAA fiber composites is about 31.7%. Photocatalytic degradation experiments of methylene blue（MB） show that the degradation rate of the composite is 99.68% after UV irradiation of 180 min, which is 45.6% higher than ZnS powder. The ZnS/DFHMA-co-MAA nanofiber composite has good photocatalytic activity and great stability after 7 circulated tests.

关 键 词：氟碳聚合物 ZNS 复合材料 光催化 

分 类 号：O643[理学—物理化学]