Method for preparing ZIF-8/MXene photocatalytic nanofiltration membrane with assistance of electric field and application of ZIF-8/MXene photocatalytic nanofiltration membrane

Abstract

The invention relates to the technical field of nanofiltration membranes, and discloses a method for preparing a ZIF-8/MXene photocatalysis nanofiltration membrane by electric field assistance and application thereof, aiming at solving the defect that a multi-heterogeneous composite material is easy to cause random codeposition interface and disordered structure due to property difference under the drive of an electric field in the prior art, firstly, ZIF-8 grows in situ on the surface of MXene to form composite dispersion liquid, then the composite dispersion liquid and dopamine are prepared into electrophoretic liquid, then, a conductive substrate covered with a base film is taken as an anode, firstly, 3-8V forward voltage is applied for 2-10 minutes, MXene is driven to deposit preferentially to form a compact bottom layer, then 3-8V reverse voltage is applied for 2-20 minutes in a switching polarity, ZIF-8/MXene composite deposition is driven to synchronously initiate dopamine polymerization crosslinking, thus a composite membrane with ordered structure is constructed, controllable preparation of membrane structure and interval is realized, the obtained membrane has nano-sieve and photocatalysis characteristics, the rejection rate of antibiotics such as tetracycline is more than 95%, and the degradation rate under ultraviolet light is suitable for synchronously separating and deeply degrading antibiotics water bodies.

Inventors

HAN RUNLIN
HE GUICHUN
ZHUANG ZHIMENG
XIAO LIHUANG
Zhuang Xiangcheng
LI SHILONG
LI JIALE

Assignees

井冈山大学
江西省凯尔迪科技有限公司

Dates

Publication Date: 20260505
Application Date: 20260303