摘要
采用静电纺丝结合溶胶法制备了一系列不同Ag/TiO_(2)含量的Ag/TiO_(2)/PVDF复合纤维膜,并利用傅里叶红外光谱(FT-IR)、扫描电镜(SEM)、干湿重法、过滤测试法、微电脑抗张强度测定仪等对复合纤维膜的微观形貌、力学性能等进行表征和研究,结果表明添加适当的Ag/TiO_(2)时,所制备的Ag/TiO_(2)/PVDF复合纤维膜纤维表面比较平滑,具有较大的平均孔径和较高的孔隙率,且抗拉强度和伸长率均有所提高,但如过量添加Ag/TiO_(2),则会导致膜性能受到影响。对Ag/TiO_(2)/PVDF复合纤维膜光催化降解溶液中亚甲基蓝(MB)的性能进行研究,结果表明,相较于PVDF原膜,Ag/TiO_(2)/PVDF复合纤维膜对于MB的光催化降解性能有显著提升,且其光催化降解过程符合准一级动力学模型。循环利用性能测试结果表明,Ag/TiO_(2)/PVDF复合纤维膜重复利用性较好,具有实际应用前景。
A series of Ag/TiO_(2)/PVDF composite fiber membranes with different Ag/TiO_(2)content were prepared by electrospinning and sol process.The micro-morphology and mechanical properties of the composite fiber membranes were characterized and studied by Fourier transform infrared spectroscopy(FT-IR),scanning electron microscopy(SEM),dry and wet weight method,filtration test method,and microcomputer tensile strength tester.The results showed that the surface of the prepared Ag/TiO_(2)/PVDF composite fiber membrane fiber was relatively smooth,with larger average pore size and higher porosity.Furthermore,the tensile strength and elongation were improved when appropriate Ag/TiO_(2)was added.However,if excessive Ag/TiO_(2)was added,the membrane performance would be affected.The photocatalytic degradation of methylene blue(MB)in solution by Ag/TiO_(2)/PVDF composite fiber membrane was studied.The results showed that the photocatalytic degradation of MB by Ag/TiO_(2)/PVDF composite fiber membrane was significantly improved compared with that of the original PVDF membrane,and its photocatalytic degradation process conformed to the quasi-first-order kinetic model.The test results of recycling performance showed that Ag/TiO_(2)/PVDF composite fiber membrane had good reusability,which made it had practical application prospects.
作者
房平
宋朝阳
李岩
任鹏
朱龙涛
FANG Ping;SONG Zhaoyang;LI Yan;REN Peng;ZHU Longtao(School of Urban Planning and Municipal Engineering,Xi’an Polytechnic University,Xi’an 710048,China;Oil and Gas Technology Research Institute,PetroChina Changqing Oilfield Company,Xi’an 710055,China)
出处
《工业水处理》
CAS
CSCD
北大核心
2023年第3期132-137,共6页
Industrial Water Treatment
基金
陕西省重点研发计划项目(2021-NY188)。
