A kind of preparation method of metal organic framework modified nanofiber proton exchange membrane
A metal-organic framework and proton exchange membrane technology, applied in fiber treatment, nanotechnology, nanotechnology, etc., can solve problems such as reducing effective proton conduction sites, limiting the overall performance of proton exchange membranes, and affecting the stability of fiber matrix, etc., to achieve Reduce the permeability of methanol, the preparation method is simple and easy, and the effect of good proton conductivity
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Embodiment 1
[0017] Sulfonated polyethersulfone (SPES) was added to N,N-dimethylformamide (DMF) and stirred to prepare an electrospinning solution with a concentration of 30 wt%; SPES was mixed with proton conductor UIO-66-NH 2 Blended into DMF with a concentration of 15 wt% SPES, UIO-66-NH 2 It accounts for 10wt% of SPES, and stirs evenly to obtain electrostatic spray solution. The two solutions were transferred to the syringe respectively, and synchronous electrospinning / electrospraying was performed, wherein the electrospinning parameters were set as: voltage 25kV, feeding speed 0.8mL / h, receiving distance 20cm; electrostatic spray parameters were: voltage 30kV, The feed rate was 0.6 mL / h, and the receiving distance was 15 cm. The collected composite membrane was heated for 15 min in a DMF steam atmosphere, and then hot-pressed at 110 °C and 10 MPa for 5 min to finally obtain UIO-66-NH 2 Modified SPES nanofiber proton exchange membrane.
Embodiment 2
[0019] Sulfonated polyaryletherketone (SPPEK) was added to N,N-dimethylacetamide (DMAc) and stirred to prepare an electrospinning solution with a concentration of 35 wt%; SPPEK was mixed with proton conductor MIL-101-NH 2 -SO 3 H was blended into DMAc with a concentration of 10 wt% SPPEK, UIO-66-NH 2 -SO 3 H accounted for 15 wt% of SPPEK, and the electrostatic spray solution was obtained by stirring uniformly. The two solutions were transferred to the syringe respectively, and synchronous electrospinning / electrospraying was carried out. The electrospinning parameters were set as: voltage 30kV, feeding speed 1.2mL / h, receiving distance 20cm; electrostatic spray parameters were: voltage 30kV, The feed rate was 0.8 mL / h, and the receiving distance was 18 cm. The collected composite membrane was heated for 10 min in a DMAc vapor atmosphere, and then hot-pressed for 8 min at 120 °C and 12 MPa to finally obtain UIO-66-NH 2 -SO 3 Modified SPPEK nanofiber proton exchange membrane...
Embodiment 3
[0021] First, the solvent of the perfluorosulfonic acid (Nafion) solution was evaporated to dryness by rotary evaporation, and then it was added to N,N-dimethylformamide (DMF) to prepare an electrospinning solution with a concentration of 25 wt%; Nafion was mixed with The proton conductor ZIF-8 was blended into DMF, wherein the Nafion solution was 12wt%, ZIF-8 accounted for 8wt% of Nafion, and the electrostatic spray solution was obtained by stirring uniformly. The two solutions were transferred into syringes, and synchronous electrospinning / electrospraying were performed. The electrospinning parameters were set as: voltage 20kV, feeding speed 0.6mL / h, receiving distance 18cm; electrostatic spray parameters were: voltage 28kV, The feed rate was 0.3 mL / h, and the receiving distance was 13 cm. The collected composite membrane was heated for 5 min in a DMF steam atmosphere, and then hot-pressed at 80 °C and 10 MPa for 5 min to finally obtain a ZIF-8 modified Nafion fiber proton e...
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