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Preparation and properties of O-MoS2 modified PMIA flat sheet loose nanofiltration membrane

Authors： JIANG Qinliang，WANG Yiwen， FU Yinxuan，MAI Zhaohuan, GUI Shuanglin, HAN Fei

Units： 1. Institute?of?Energy?, Jiangxi?Academy?of?Sciences,?Nanchang?330096,?China；2. Key Laboratory of Poyang Lake Environment and Resource Utilization, Ministry of Education, School of Resources Environmental & Chemical Engineering, Nanchang University, Nanchang 330031, China

KeyWords： PMIA; O-MoS2; flat-sheet; loose; nanofiltration membrane

ClassificationCode：TQ028.8

year,volume(issue):pagination： 2021,41(3):126-134

Abstract：

To investigate the effect of oxidized molybdenum disulfide (O-MoS2) on the membrane structure and separation performance of polyresorcinylene diamine (PMIA) membrane. In this study, the PMIA flat sheet loose nanofiltration membrane was prepared by using phase inversion method. Effect of O-MoS2 content on the morphology, surface zeta-potential, separation and pollution resistance characteristics of the resulted membranes were investigated in detail. The results showed that compared with the PMIA membrane, the surface of the composite PMIA/ O-MoS2 membrane was smooth without defects.; As the content of O-MoS2 in the composite membrane increased from 0wt. % to 0.5wt.%, the surface contact angle decreased from 61.8° of the PMIA membrane to 35.0°of the PMIA/ O-MoS2-4 membrane; The zeta potential on the composite membrane surface was enhanced. The nanofiltration experimental results showed that PMIA/O-MoS2 membrane (mass fraction of O-MoS2 is 0.3wt.%) showed a pure water flux of 361.5 L/(m2·h), 1.5 times that of the original membrane flux, under the operating pressure of 2bar. While the addition of O-MoS2 enhanced the anti-pollution performance of the composite membrane, and showed potential application prospects in dye wastewater treatment and other fields.

Funds：

江西省科学院博士资助项目（2019-YYB-05）；普惠制一类资助项目（2019-XTPH1-05）；国家自然科学基金项目（NSFC21567009）

AuthorIntro：

姜钦亮（1988-），男，江西南昌人，博士，助理研究员，主要从事膜材料的制备与膜分离，

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