PEI modified MWCNTs used to prepare high-throughput composite nanofiltration membranes |
Authors: Yunhao Hei, Jun Xiang, Guiying Tian, Na Tang |
Units: 1. College of Chemical Engineering and Materials Science, Tianjin university of science and technology, Tianjin 300457, China;2. Tianjin Key Laboratory of Brine Chemical Engineering and Resource Eco-utilization, Tianjin 300457, China |
KeyWords: Multi-walled carbon nanotubes; polyethyleneimine modification; flux; nanofiltration; rejection rate; |
ClassificationCode:TQ028.8 |
year,volume(issue):pagination: 2021,41(5):87-96 |
Abstract: |
In this work, polyethyleneimine modified multi-walled carbon nanotubes were prepared, polysulfone ultrafiltration membrane, polyethyleneimine and trimesoyl chloride were as the base membrane, water phase monomer, and organic phase monomer, respectively. Modified multi-walled carbon nanotubes were added into the water phase, and the organic-inorganic hybrid composite nanofiltration membrane was prepared by the interfacial polymerization method. The microscopic morphology/chemical properties and dispersion properties of the modified multi-walled carbon nanotubes were analyzed and characterized. The microstructure, infrared spectrum and contact angle of the base membrane and nanofiltration membrane were analyzed and characterized, and the influence of the addition amount of polyethyleneimine modified multi-walled carbon nanotubes on the membrane performance was discussed. The results show that the water flux of the composite nanofiltration membrane with 100mg·L-1 modified multi-walled carbon nanotubes can reach 11.95L·m−2·h−1·bar−1, and the rejection rate of MgCl2 is 94.4%. At the same time, the rejection rate for the four common commercial dyes is about 98%. |
Funds: |
国家自然科学基金(U20A20148),天津市科技项目计划(18YFZCSF00330),教育部科研创新团队培育计划(IRT-17R81),天津市高等学校创新团队培养计划(TD13-5008) |
AuthorIntro: |
黑云皓(1995-),男,天津,硕士研究生,从事纳滤膜制备与膜法水处理研究,E-mail:18722460197@163.com. |
Reference: |
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