一种GO层间原位生长TiO2复合膜的制备方法与应用
By using a method of in-situ growth of TiO2 composite films between graphene oxide layers, near-infrared irradiation technology was used to achieve uniform dispersion of TiO2 nanoparticles, which solved the problems of insufficient structural stability and separation selectivity of graphene oxide films in seawater systems, and improved the separation performance and stability of the films.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- LANZHOU UNIV
- Filing Date
- 2026-05-15
- Publication Date
- 2026-07-17
AI Technical Summary
In existing technologies, graphene oxide membranes in seawater systems suffer from interlayer spacing fluctuations, structural stability degradation, and sensitivity to organic pollution, resulting in insufficient separation selectivity in systems where uranium/vanadium and other multi-metal ions coexist. Furthermore, existing modification methods suffer from high temperature and high energy consumption.
A method for preparing TiO2 composite films in situ grown between graphene oxide layers using near-infrared irradiation technology ensures that TiO2 nanoparticles are uniformly dispersed between layers and form well-crystallized TiO2 crystal domains through steps of preparing a titanium source, dispersion, film formation, and near-infrared irradiation.
It significantly improves the membrane's structural regularity and ion sieving performance, enhances the selective separation ability of uranyl ions and vanadium ions, and improves its resistance to organic fouling and long-term operational stability.
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Figure CN122183402B_ABST