Preparation method of a multifunctional graded oil-water separation material
An oil-water separation and grading technology, applied in the field of preparation of graded porous composite mesh membrane, can solve problems such as inability to separate metal ions, achieve fast and effective adsorption process, rapid process, and solve the effect of secondary treatment
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specific Embodiment approach 1
[0039] Specific implementation mode 1: In this implementation mode, graded oil-water separation materials are prepared according to the following steps:
[0040] (1) Preparation of mesh-like porous Cu film
[0041] The mesh porous Cu film (20-400 mesh) was prepared by the hydrogen bubble template method, and the specific steps were as follows: After the copper mesh substrate was acid-washed and alkali-washed to remove oil and oxides, a platinum sheet was used as the anode (2×2cm 2 ), copper mesh as counter electrode cathode (3×3cm 2 ) for electrodeposition ( figure 1 ), the bath composition includes 0.02-4mol L -1 CuSO 4 and 0.1-5mol L -1 h 2 SO 4 , pH=4.0±0.5, current density is 0.1-8.0 A cm -2 , the deposition time is 5-40s.
[0042] (2) Preparation of FCN / PPy composite film coating on mesh porous Cu film
[0043]The above mesh porous Cu film is immersed in the prepared mixed solution, which contains 0.5-20mmol L −1 Pyrrole, 0.5-20 mmol·L −1 K 3 Fe(CN) 6 , 0...
specific Embodiment approach 2
[0050] Specific embodiment two: In this embodiment, a multifunctional oil-water separation membrane is prepared according to the following steps:
[0051] (1) Preparation of mesh-like porous Cu film
[0052] Hydrogen bubble template method was used to prepare mesh-like porous Cu thin film (base copper mesh 100 mesh). 2 ), copper mesh as counter electrode cathode (3×3cm 2 ), the bath composition includes 0.2mol L -1 CuSO 4 and 1mol L -1 h 2 SO 4 , pH=4.0±0.5, the current density is 8A cm -2 , the deposition time is 10s. The electron micrograph of the microscopic morphology of the mesh porous Cu thin film is shown in Figure 4 , it can be seen from the figure that the copper mesh presents a hierarchical porous structure.
[0053] (2) Preparation of FCN / PPy composite film coating on mesh porous Cu film
[0054] The above mesh porous Cu film was immersed in the prepared mixed solution, which contained 5mmol L −1 Pyrrole, 5 mmol·L −1 K 3 Fe(CN) 6 , 5 mmol·L −1 N...
specific Embodiment approach 3
[0064] Specific embodiment three: In this embodiment, a multifunctional oil-water separation membrane is prepared according to the following steps:
[0065] (1) Preparation of mesh-like porous Cu film
[0066] Hydrogen bubble template method was used to prepare mesh-like porous Cu thin film (substrate copper mesh 300 mesh), and the specific steps were as follows: after pickling and alkali-washing the copper mesh substrate to remove oil and oxides, a platinum sheet was used as the anode (2×2cm 2 ), copper mesh as counter electrode cathode (3×3cm 2 ), the bath composition includes 0.4mol L -1 CuSO 4 and 1mol L -1 h 2 SO 4 , pH=4.0±0.5, the current density is 7A cm -2 , the deposition time is 20s. The electron micrograph of the microscopic morphology of the mesh porous Cu thin film is shown in Figure 5 , it can be seen from the figure that a porous mesh with a dense pore size can be obtained by electrodeposition of a dense copper mesh.
[0067] (2) Preparation of FCN / ...
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