Method for preparing Ti-Zr composite nanofiltration membrane
A composite nanofiltration membrane, ti-zr technology, applied in the field of preparation of Ti-Zr composite nanofiltration membrane, can solve the problems of poor nanofiltration performance, harsh preparation conditions, complex preparation process, etc., and achieve excellent nanofiltration performance. Effect
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Embodiment 1
[0024] 4.5ml (0.01mol) of zirconium n-butoxide, 0.4ml (0.001mol) of titanium tert-butoxide and 10ml (0.11mol) of n-butanol were mixed and stirred for 5min to obtain a mixture M1. Then 5 mL (0.11 mol) of acetic acid was added into the mixed liquid M1, and the mixed liquid M2 was obtained after stirring for 5 min. The mixture M2 was placed in an ice bath at -20°C, and 4ml (0.22mol) of H 2 O. After stirring and mixing for 5 minutes, it was quickly placed in a constant temperature water bath at 30°C for 1 hour of reaction. After the reaction, a transparent Ti-Zr composite sol was obtained. Store it at -20°C until use. The sol and n-butanol are mixed with a volume ratio of 1:8 to obtain a film-forming solution, and the film-forming solution is placed in a sheet-shaped γ-Al 2 o 3 The surface of the membrane is coated with a film, and at 2°C min -1 After sintering at a heating rate of 300°C, keep the temperature for 3 hours and then cool down naturally to obtain a Ti-Zr composi...
Embodiment 2
[0032] 4.5ml (0.01mol) of zirconium n-propoxide, 3mL (0.01mol) of titanium isopropoxide and 58ml (1.2mol) of n-propanol were mixed and stirred for 15min to obtain a mixed liquid M1. Then 2 mL (0.02 mol) of AcAc was added into the mixed solution M1, and the mixed solution M2 was obtained after stirring for 15 min. The mixture M2 was placed in an ice bath at 0°C, and 0.36ml (0.02mol) of H 2 O, after stirring and mixing for 15 minutes, quickly place it in a constant temperature water bath at 90°C for 6 hours. After the reaction, a transparent Ti-Zr composite sol was obtained. Store it at -20°C until use. The sol and n-propanol are mixed in a volume ratio of 1:15 to obtain a film-making solution, and the film-making solution is placed in a sheet of ZrO 2 Coat the surface of the film with a temperature of 0.2°C min -1 After sintering at a heating rate of 600°C, the Ti-Zr composite film was obtained by keeping the temperature for 1 h and then cooling down naturally. The charact...
Embodiment 3
[0034] 1.7ml (0.01mol) of zirconium oxychloride, 2mL of titanium ethoxide (0.01mol) and 70ml (1.2mol) of absolute ethanol were mixed and stirred for 10min to obtain a mixed solution M1. Then 1.9 mL (0.02 mol) DEA was added into the mixed solution M1, and stirred for 10 min to obtain the mixed solution M2. The mixed solution M2 was placed in an ice bath at 0°C, and 1.8ml (0.1mol) of H was added thereto under stirring. 2 O. After stirring and mixing for 15 minutes, it was quickly placed in a constant temperature water bath at 40° C. for 3 hours. After the reaction, a transparent Ti-Zr composite sol was obtained. Store it at -20°C until use. The sol and absolute ethanol are mixed with a volume ratio of 1:10 to obtain a film-making solution, and the film-making solution is placed in the flake TiO 2 Coat the surface of the film with a temperature of 1°C min -1 After sintering at a heating rate of 400°C, the Ti-Zr composite film was obtained by keeping the temperature for 9 hou...
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