O-MoS2改性PMIA疏松纳滤膜的制备 及其性能 |
作者:姜钦亮,王一雯,付尹宣,麦兆环,桂双林,韩飞 |
单位: 1.江西省科学院能源研究所,江西南昌 30096; 2.南昌大学 鄱阳湖环境与资源利用 教育部重点实验室 资源环境与化工学院,南昌330031 |
关键词: 聚间苯二甲酰间苯二胺;氧化二硫化钼;平板;疏松;纳滤膜 |
DOI号: |
分类号: TQ028.8 |
出版年,卷(期):页码: 2021,41(3):126-134 |
摘要: |
为考察氧化二硫化钼(O-MoS2)对聚间苯二甲酰间苯二胺(PMIA)膜结构和分离性能的影响,本研究采用相转化法制备了PMIA平板疏松纳滤膜,进行了O-MoS2添加量对膜的形貌结构,膜表面电势,分离性能及抗污染性能的影响分析。结果表明:与原始的PMIA膜相比,复合PMIA/O-MoS2膜表面光滑无缺陷;随着复合膜中O-MoS2含量由0w.t%增加至0.5wt.%,膜表面接触角由原始膜的61.8°降低至35.0°;复合膜表面的荷负电性能增强。纳滤实验结果表明,在O-MoS2质量分数为0.3 wt.%条件下制备的复合膜,在2bar操作压力下,纯水通量361.5 L/(m2·h)是原始膜通量的1.5倍。同时O-MoS2的添加增强了复合膜的抗污染性能,在染料废水处理等领域展现了潜在的应用前景。 |
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. |
基金项目: |
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) |
作者简介: |
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, |
参考文献: |
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