Research on modification of PVDF composite membrane by CeO2-TiO2 nanoparticles
JI Hong-jun1, TONG Yu-jia2, DING Wen-long2, SHI Li-jian2, LI Wei-xing1,2
1. Nanjing Membrane Application Institute Co., Ltd., Nanjing 210009, China; 2. State Key Laboratory of Materials-Oriented Chemical Engineering, College of Chemical Engineering, Nanjing Tech University, Nanjing 210009, China
Abstract: CeO2-TiO2 nanoparticles,CeO2 nanoparticles and TiO2 nanoparticles are prepared through hydrothermal synthesis technology with Ce(NO3)3·6H2O and titanium n-butanol (Ti(OC4H9)4) as raw materials.Those as-synthesized nanoparticles are applied to modify polyvinylidene fluoride (PVDF) membranes to prepare PVDF composite membranes.By means of X-ray diffraction (XRD),Transmission Electron Microscope (TEM),Cold field scanning electron microscope (SEM),Atomic Force Microscope (AFM) and self-made cross filtration system,the morphology,structure,composition and properties of CeO2-TiO2 nanoparticles and PVDF composite membranes are investigated.Results display that the as-synthesized CeO2-TiO2 nanoparticles show mesoporous,aggregated and crystal structures.In contrast with pure PVDF membrane,the flux,BSA rejection rate and flux recovery rate of PVDF composite membranes all have an increase to a content degree.Especially,the hydrophilicity and anti-fouling properties of PVDF-CeO2-TiO2 (PVDF-CT) composite membranes have a dramatic increase.The BSA rejection rate and flux recovery rate of PVDF-CT composite membranes achieve 94.1% and 95%,respectively when the addition of CeO2-TiO2 nanoparticles is 9 wt.%.
季红军, 童裕佳, 丁文龙, 史丽建, 李卫星. CeO2-TiO2纳米颗粒改性PVDF复合膜的研究[J]. 现代化工, 2022, 42(12): 114-119,123.
JI Hong-jun, TONG Yu-jia, DING Wen-long, SHI Li-jian, LI Wei-xing. Research on modification of PVDF composite membrane by CeO2-TiO2 nanoparticles. Modern Chemical Industry, 2022, 42(12): 114-119,123.
[1] Alsbaiee A,Smith B J,Xiao L, et al.Rapid removal of organic micropollutants from water by a porous beta-cyclodextrin polymer[J].Nature,2016,529:190-194. [2] Eliasson J.The rising pressure of global water shortages[J].Nature,2015,517:6. [3] Zhao X,Zhang R,Liu Y, et al.Antifouling membrane surface construction:Chemistry plays a critical role[J].Journal of Membrane Science,2018,551:145-171. [4] Samree K,Srithai P,Kotchaplai P, et al.Enhancing the antibacterial properties of PVDF membrane by hydrophilic surface modification using titanium dioxide and silver nanoparticles[J].Membranes,2020,10:289. [5] 杜林,秦秋毫,何健,等.磺化TA/CS复合纳滤膜的制备及性能研究[J].工业水处理,2021,41(9):123-128. [6] Liu F,Hashim N A,Liu Y T, et al.Progress in the production and modification of PVDF membranes[J].Journal of Membrane Science,2011,375:1-27. [7] Li X,Sotto A,Li J, et al.Progress and perspectives for synthesis of sustainable antifouling composite membranes containing in situ generated nanoparticles[J].Journal of Membrane Science,2017,524:502-528. [8] Lai C Y,Groth A,Gray S,et al .Nanocomposites for improved physical durability of porous PVDF membranes[J].Membranes (Basel),2015,4:55-78. [9] 李根,李国宇,李培礼,等.纳米SiO2的表面改性及SiO2/WEPN复合材料的制备与性能研究[J].现代化工,2021,41(9):173-177. [10] Bet-moushoul E,Mansourpanah Y,Farhadi K,et al .TiO2 nanocomposite based polymeric membranes:A review on performance improvement for various applications in chemical engineering processes[J].Chemical Engineering Journal,2016,283:29-46. [11] Yadav S,Jaiswar G.Review on undoped/doped TiO2 nanomaterial;synthesis and photocatalytic and antimicrobial activity[J].Journal of the Chinese Chemical Society,2017,64:103-116. [12] Li W,Sun X,Wen C,et al .Preparation and characterization of poly (vinylidene fluoride)/TiO2 hybrid membranes[J].Frontiers of Environmental Science & Engineering,2012,7:492-502. [13] Zhang J,Wang Z,Wang Q,et al .Comparison of antifouling behaviours of modified PVDF membranes by TiO2 sols with different nanoparticle size:Implications of casting solution stability[J].Journal of Membrane Science,2017,525:378-386. [14] 陈熙,马永迪,翟笑影,等.Ag-PA/PVDF复合膜制备及其催化性能[J].天津工业大学学报,2021,40(5):11-16. [15] Zhao Y,Yu W,Li R,et al .Electric field endowing the conductive polyvinylidene fluoride (PVDF)-graphene oxide (GO)-nickel (Ni) membrane with high-efficient performance for dye wastewater treatment[J].Applied Surface Science,2019,483:1006-1016. [16] 王慧雅.TiO2/GO/PVDF改性复合膜的制备及抗污染性能研究[J].膜科学与技术,2021,41(1):80-88. [17] 党在清,吕东亮.纳米TiO2对PVA/St复合膜性能的影响[J].塑料科技,2021,10:51-54. [18] Hamzah N,Leo C P,Ooi B S.Superhydrophobic PVDF/TiO2-SiO2 membrane with hierarchical roughness in membrane distillation for water recovery from phenolic rich solution containing surfactant[J].Chinese Journal of Polymer Science,2019,37:609-616. [19] Xu R,Li Y,Feng S,et al .Enhanced performance of planar perovskite solar cells using Ce-doped TiO2 as electron transport layer[J].Journal of Membrane Science,2020,55:5681-5689. [20] Qamaruddin M,Khan I,Ajumobi O O,et al .Sulfur doped ceria-titania (S-CeTiO4-x ) nanocomposites for enhanced solar-driven water splitting[J].Solar Energy,2019,188:890-897. [21] Gionco C,Paganini M C,Agnoli S,et al .Structural and spectroscopic characterization of CeO2-TiO2 mixed oxides[J].Journal of Materials Chemistry A,2013,36:10918-10926.
