Two-dimensional MOF-5/PVDF composite membranes were prepared by a non-solvent-induced phase separation method,and then used to adsorb heavy metal ions Cu2+.The morphology,structure and crystal form of MOF-5 were analyzed,the preparation process parameters of MOF-5/PVDF composite membrane were optimized,and the reusability of the optimal performance composite membrane was explored.The results showed that the prepared two-dimensional MOF-5 was uniform in size and obvious flake shape.When the MOF-5 content was 8% and 10%,the composite membrane exhibited good Cu2+ removal ability.After seven cycle tests,the composite membrane still maintained good adsorption performance,showing good reusability.Through research,a two-dimensional MOF-5/PVDF composite membrane with good adsorption performance for copper ions was successfully prepared,and the membrane was reusable.
[1] Li W C,Tse H F.Health risk and significance of mercury in the environment[J].Environmental Science and Pollution Research,2015,22(1):192-201.
[2] Xu G R,An Z H,Xu K,et al.Metal organic framework (MOF)-based micro/nanoscaled materials for heavy metal ions removal:the cutting-edge study on designs,synthesis,and applications[J].Coordination Chemistry Reviews,2021,427:213554.
[3] Abdullah N,Gohari R J,Yusof N,et al.Polysulfone/hydrous ferric oxide ultrafiltration mixed matrix membrane:preparation,characterization and its adsorptive removal of lead(Ⅱ) from aqueous solution[J].Chemical Engineering Journal,2016,289:28-37.
[4] Yang L,Shi Z.Enhanced electrosorption capacity for lead ion removal with polypyrrole and air-plasma activated carbon nanotube composite electrode[J].Journal of Applied Polymer Science,2015,132(14):41793.
[5] Carolin C F,Kumar P S,Saravanan A,et al.Efficient techniques for the removal of toxic heavy metals from aquatic environment:a review[J].Journal of Environmental Chemical Engineering,2017,5(3):2782-2799.
[6] Gai K,Avellan A,Hoelen T P,et al.Impact of mercury speciation on its removal from water by activated carbon and organoclay[J].Water Research,2019,157:600-609.
[7] Yang X,Wan Y,Zheng Y,et al.Surface functional groups of carbon-based adsorbents and their roles in the removal of heavy metals from aqueous solutions:a critical review[J].Chemical Engineering Journal,2019,366:608-621.
[8] Gupta K,Yuan B,Chen C,et al.K2xMnxSn3-xS6(x=0.5～0.95)(KMS-1) immobilized on the reduced graphene oxide as KMS-1/r-GO aerogel to effectively remove Cs+ and Sr2+ from aqueous solution[J].Chemical Engineering Journal,2019,369:803-812.
[9] Schoedel A,Li M,Li D,et al.Structures of metal-organic frameworks with rod secondary building units[J].Chemical Reviews,2016,116(19):12466-12535.
[10] Jiao L,Wang Y,Jiang H L,et al.Metal-organic frameworks as platforms for catalytic applications[J].Advanced Materials,2018,30(37):e1703663.
[11] Jian M,Liu H,Williams T,et al.Temperature-induced oriented growth of large area,few-layer 2D metal-organic framework nanosheets[J].Chem Commun(Camb),2017,53(98):13161-13164.
[12] Li H,Eddaoudi M,O'keeffe M,et al.Design and synthesis of an exceptionally stable and highly porous metal-organic framework[J].Nature,1999,402(6759):276-279.
[13] Lestari W W,Wibowo A H,Astuti S,et al.Fabrication of hybrid coating material of polypropylene itaconate containing MOF-5 for CO2 capture[J].Progress in Organic Coatings,2018,115:49-55.
[14] Chen N,Chen D,Wei F,et al.Effect of structures on the adsorption performance of cobalt metal organic framework obtained by microwave-assisted ball milling[J].Chemical Physics Letters,2018,705:23-30.
[15] Yang Q,Lu R,Ren S,et al.Three dimensional reduced graphene oxide/ZIF-67 aerogel:effective removal cationic and anionic dyes from water[J].Chemical Engineering Journal,2018,348:202-211.
[16] Shen L,Huang L,Liang S,et al.Electrostatically derived self-assembly of NH2-mediated zirconium MOFs with graphene for photocatalytic reduction of Cr(Ⅵ)[J].RSC Advances,2014,4(5):2546-2549.
[17] Lin R,Ge L,Liu S,et al.Mixed-matrix membranes with metal-organic framework-decorated CNT fillers for efficient CO2 separation[J].ACS Applied Materials & Interfaces,2015,7(27):14750-14757.
[18] Lee A,Elam J W,Darling S B.Membrane materials for water purification:design,development,and application[J].Environmental Science:Water Research & Technology,2016,2(1):17-42.
[19] Zhu Z,Wang L,Xu Y,et al.Preparation and characteristics of graphene oxide-blending PVDF nanohybrid membranes and their applications for hazardous dye adsorption and rejection[J].Journal of Colloid and Interface Science,2017,504:429-439.
[20] Feijani E A,Mahdavi H,Tavasoli A.Poly(vinylidene fluoride) based mixed matrix membranes comprising metal organic frameworks for gas separation applications[J].Chemical Engineering Research and Design,2015,96:87-102.
[21] Vitola G,Mazzei R,Fontananova E,et al.PVDF membrane biofunctionalization by chemical grafting[J].Journal of Membrane Science,2015,476:483-489.
[22] Park J A,Nam A,Kim J H,et al.Blend-electrospun graphene oxide/poly(vinylidene fluoride) nanofibrous membranes with high flux,tetracycline removal and anti-fouling properties[J].Chemosphere,2018,207:347-356.
[23] Zhang J,Guo S,Zhang Y,et al.Fabrication of PVDF membranes entrapped with oleic acid modified TiO2 and selective adsorption toward bovine hemoglobin[J].RSC Advances,2015,5(60):48607-48614.
[24] Abdollahi N,Akbar Razavi S A,Morsali A,et al.High capacity Hg(Ⅱ) and Pb(Ⅱ) removal using MOF-based nanocomposite:cooperative effects of pore functionalization and surface-charge modulation[J].Journal of Hazardous Materials,2020,387:121667.
基金资助
国家自然科学基金(52003239);浙江省基础公益研究计划项目(LGC21E030003)
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