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Inorganic-organic hybrid film based on Cu2O nano wire, and preparation method and application thereof

A technology of organic hybridization and nanowires, applied in the field of inorganic-organic hybrid membranes and its preparation, can solve the problems of low mechanical properties and poor stability, and achieve the effect of good mechanical properties, good stability, and wide application prospects

Inactive Publication Date: 2015-07-15
ZHEJIANG UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a kind of Cu-based 2 O nanowire inorganic-organic hybrid membrane and its preparation method, which solves the problems of poor stability and low mechanical properties of traditional organic membranes, and the prepared inorganic-organic hybrid membrane has high water flux and rejection rate

Method used

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  • Inorganic-organic hybrid film based on Cu2O nano wire, and preparation method and application thereof

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Embodiment 1

[0024] (1) 250ml 10mM CuSO 4 Solution, mix 250mL NaOH (28mM) solution and 500mL glucose (0.8mM) solution, stir evenly, place in a 1L flask, heat on a heating mantle, keep at 85-90°C for 40 minutes, the solution will be seen It turns from blue to yellow-green and finally orange, which proves the progress of the reduction reaction. After the reaction solution is cooled, it is washed with deionized water, and the solid is collected by filter membrane filtration. It is dried and stored at 60 ° C to obtain yellow-green cuprous oxide nanowires, which are recorded as Cu. 2 O NWs.

[0025] (2) 3.657g dry PSF and 0.023g Cu 2 O NWs(Cu 2 The mass of O NWs is PSF, Cu 2 (0.1wt% of the total mass of O NWs and DMAC) was dissolved in 20.6mL organic solvent DMAC, stirred for 12h to a uniform and stable casting solution, and then the casting solution was left to stand for 24h and ultrasonically degassed; adjust the ambient humidity ( 60-65%rh) and temperature (20-25°C), cast the casting sol...

Embodiment 2

[0036] (1) 250ml 2mM CuSO 4 Solution, mix 250mL NaOH (50mM) solution and 500mL glucose (0.4mM) solution, stir evenly, place in a 1L flask, heat on a heating mantle, keep at 85-90°C for 40 minutes, the solution will be seen It turns from blue to yellow-green and finally orange, which proves the progress of the reduction reaction. After the reaction solution is cooled, it is washed with deionized water, and the solid is collected by filter membrane filtration. It is dried and stored at 60 ° C to obtain yellow-green cuprous oxide nanowires, which are recorded as Cu. 2 O NWs.

[0037] (2) operate according to the step (2) of embodiment 1, the difference is that PSF is changed into PVDF, and the Cu prepared by adding different amounts of steps (1) 2 O NWs, making Cu 2 The masses of O NWs are PVDF, Cu 2 0 of the total mass of O NWs and DMAC (i.e. no Cu 2 O NWs, pure PVDF organic film), 0.1%, 0.3%, 0.5%, 1wt%, prepared different Cu 2 O NWs content of Cu 2 O NWs / PVDF membrane. ...

Embodiment 3

[0040] Cu in Example 1 2 O NWs and dry PES are blended and dissolved in the organic solvent DMAC, and are operated according to the step (2) of Example 1 to make Cu 2 The masses of O NWs are PES, Cu 2 0 of the total mass of O NWs and DMAC (i.e. no Cu 2 O NWs, pure PES organic film), 0.1%, 0.2%, 0.5%, 1wt%, prepared different Cu 2 O NWs content of Cu 2 O NWs / PES film.

[0041] to Cu 2 O NWs / PES also carried out the measurement of the flux of pure water and BSA filtration experiments, the results show that the flux of the hybrid membrane is the largest when the addition amount is 0.2wt.%: the initial flux is 126.1L m -2 h -1 , after two 1-hour BSA filtrations, the pure water flux was maintained at 100.2L m -2 h -1 .

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Abstract

The invention discloses an inorganic-organic hybrid film based on a Cu2O nano wire, and a preparation method and application thereof. The preparation method comprises the following steps: uniformly dispersing the Cu2O nano wire and inorganic substances in an organic solvent--dimethyl acetamide so as to obtain a film casting solution; and preparing a flat sheet film by using an immersion phase inversion method. According to the invention, through addition of the inorganic particle, the porosity and the average pore size of the hybrid film are increased, the pure water flux of the film is improved, and hybrid film maintains an asymmetric structure composed of an upper compact surface layer and a lower finger-like porous supporting layer. The preparation method is simple, is convenient to operate and can easily realize industrial production; and the prepared hybrid film has high water flux, good stability, good mechanical properties and a high retention rate.

Description

technical field [0001] The invention belongs to the technical field of inorganic / organic hybrid separation, in particular to a Cu-based 2 Inorganic-organic hybrid film of O nanowires and its preparation method and use Background technique [0002] Organic-inorganic hybrid membrane (referred to as hybrid membrane) is a membrane material that achieves a good combination of organic components and inorganic components through blending methods, in-situ composite methods, sol-gel methods, etc., and has the advantages of both organic and inorganic membranes. . The preparation method of inorganic particle-filled hybrid membrane is simple, the conditions are mild, and it is easy to operate. It is one of the main methods for the hybrid modification of polymer membranes. Most reports also believe that a small amount of inorganic fillers is beneficial to inhibit the growth of macropores during film formation, increase the interpenetration between pores and the number of surface pores,...

Claims

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Application Information

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IPC IPC(8): B01D71/26B01D71/68B01D71/34B01D71/42B01D71/16B01D71/30B01D69/10B01D67/00B01D61/14
Inventor 张国亮徐泽海叶帅菊孟琴张继伟
Owner ZHEJIANG UNIV OF TECH
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