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Fabrication of In(III)-MOF incorporated thin-film composite membrane for forward osmosis and studies on its anti-fouling property
Authors: HAN Xueli, WANG Duo, WANG Meng
Units: College of Chemistry and Chemical Engineering, Ocean University of China, Qingdao 266100, China
KeyWords: forward osmosis membrane;polyamide composite membrane;In(Ⅲ)-MOF;membrane fouling
ClassificationCode:TQ028.8
year,volume(issue):pagination: 2021,41(2):71-80

Abstract:
 Adding Metal-Organic Framework (MOFs) to form polyamide composite membrane is a simple process to improve the performance of forward osmosis membranes greatly. In this paper,a certain amount of the metal salt In(NO3)3·6H2O and tridentate carboxylic acid ligands H3CTTA was dissolved in N, N - dimethyl formamide to get In(Ⅲ)-MOF (BUT - 172) crystal by the solvothermal method;Then,the prepared MOF particles were added to the polyamide active separation layer by interfacial polymerization,and the modified TFC- FO membrane was obtained. In addition,the effects of different concentration of BUT-172 particles on the structure and properties were also studied. The results showed that the incorporation of BUT-172 particles provided additional channels for the diffusion of water molecules,which greatly improved the water flux of the modified TFC-FO membrane. Moreover,when the BUT-172 concentration was 0.04wt%,the modified membrane had a higher water flux and a lower salt water ratio. The study on pollution resistance of humic acid showed that the modified membrane had better pollution resistance and the performance of the polluted membrane can be recovered by simple cleaning.

Funds:
:国家自然科学基金项目(21576249)

AuthorIntro:
韩雪笠(1995-),女,山东滨州人,在读硕士,从事功能膜材料的制备研究,联系电话:0532-66786513

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