Novel hydrophilic PVDF ultrafiltration membranes based on a ZrO2–multiwalled carbon nanotube hybrid for oil/water separation
Novel hydrophilic PVDF ultrafiltration membranes based on a ZrO2–multiwalled carbon nanotube hybrid for oil/water separation
复制标题
DOI：
10.1007/s10853-016-0147-6
复制
发表时间：
2016-06
影响因子：
4.5
通讯作者：
Xi Yang;Yi He;Guangyong Zeng;Yingqing Zhan;Yang Pan;Heng Shi;Qi Chen
中科院分区：
文献类型：
--
作者：
Xi Yang;Yi He;Guangyong Zeng;Yingqing Zhan;Yang Pan;Heng Shi;Qi Chen
采用简单的相变法制备了一种基于zro2 -多壁碳纳米管（MWCNTs）杂化的新型亲水性PVDF复合膜。首先通过水热途径将zro2纳米粒子负载在MWCNTs表面，采用傅里叶变换红外、x射线衍射、热重分析仪、扫描电镜和透射电镜对负载过程进行了表征。结果表明，ZrO2-MWCNTs杂化物在PVDF基体内形成网状结构，避免了纳米填料的聚集。然后，系统研究了ZrO2-MWCNTs杂化物对PVDF终膜性能的影响。利用扫描电镜和原子力显微镜观察了膜的微观结构和表面形貌。结果表明，zro2均匀地分散在MWCNTs表面。与纯PVDF膜相比，制备的膜具有更高的纯水通量和更低的接触角。此外，制备的膜还提高了对油水乳液的分离效率，获得了更好的截留率和持久的防污性能。一般来说，ZrO2-MWCNTs /PVDF膜可能在复杂的油/水体系中提供潜在的应用。
A novel hydrophilic PVDF composite membrane based on ZrO2–multiwalled carbon nanotubes (MWCNTs) hybrid was prepared by a simple phase-inversion method. ZrO2nanoparticles were firstly loaded on the surface of MWCNTs via hydrothermal route, which was characterized by Fourier-transform infrared, X-ray diffraction, thermogravimetric analyzer, scanning electron microscopy (SEM), and transmission electron microscopy. It was found that the ZrO2–MWCNTs hybrid formed network structures within the PVDF matrix, avoiding the aggregation of nanofillers. Then, the effects of ZrO2–MWCNTs hybrid on the performances of ultimate PVDF membrane were systematically investigated. The microstructure and surface morphology of novel membranes were observed by SEM and atomic force microscopy. The results indicated that ZrO2were dispersed homogeneously on the surface of MWCNTs. The as-prepared membrane exhibited enhanced pure water flux and a lower contact angle than those of pure PVDF membrane. Furthermore, the as-prepared membranes processed also improved separation efficiency against oil/water emulsions and achieved better rejection ratio and good durable antifouling performance. In general, ZrO2–MWCNTs/PVDF membrane may provide a potential application against complex oil/water systems.